/* ==========================================================================
   Ieum Sangjo Theme - Main Stylesheet
   Funeral service website theme
   ========================================================================== */

/* ==========================================================================
   1. CSS Variables (Custom Properties)
   ========================================================================== */

:root {
    --color-primary: #2B8A3E;
    --color-primary-light: #8CE99A;
    --color-primary-dark: #1e6b2e;
    --color-accent: #FF8741;
    --color-accent-dark: #EA7810;
    --color-danger: #FF6060;
    --color-danger-bg: #FFE3E3;
    --color-dark: #252525;
    --color-text: #3d3d3d;
    --color-text-light: #666;
    --color-text-muted: #999;
    --color-bg: #f5f5f5;
    --color-bg-gray: #f5f5f5;
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    --color-footer-bg: #FFFFFF;
    --color-footer-text: #888;
    --color-white: #FEFEFF;
    --color-black: #000;
    --ieum-shell-width: 480px;
    --ieum-shell-padding: 20px;
    --ieum-card-radius: 12px;
    --ieum-card-radius-lg: 12px;
    --ieum-card-padding: 24px;
    --ieum-section-gap: 56px;
    --ieum-title-size: 1.3125rem;
    --ieum-title-hero: 1.75rem;
    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-base: 1.6;
    --line-height-tight: 1.3;
    --line-height-loose: 1.8;
    --header-height: 56px;
    --max-width: 1200px;
    --container-padding: 1.5rem;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --z-header: 1000;
    --z-overlay: 2000;
    --z-modal: 3000;
    --z-toast: 4000;
    --z-back-to-top: 900;
    --z-bottom-cta: 1100;
}

/* ==========================================================================
   2. Reset & Base
   ========================================================================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-top: var(--header-height);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border: 0;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

ul,
ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    outline: none;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
    width: 100%;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-dark);
    word-break: keep-all;
}

h1 {
    font-size: var(--font-size-4xl);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-size-3xl);
    letter-spacing: -0.015em;
}

h3 {
    font-size: var(--font-size-2xl);
    letter-spacing: -0.01em;
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-md);
}

p {
    margin-bottom: 1rem;
    word-break: keep-all;
    overflow-wrap: break-word;
}

p:last-child {
    margin-bottom: 0;
}

strong,
b {
    font-weight: var(--font-weight-bold);
}

em,
i {
    font-style: italic;
}

small {
    font-size: var(--font-size-sm);
}

.text-primary {
    color: var(--color-primary);
}

.text-accent {
    color: var(--color-accent);
}

.text-danger {
    color: var(--color-danger);
}

.text-muted {
    color: var(--color-text-muted);
}

.text-dark {
    color: var(--color-dark);
}

/* ==========================================================================
   4. Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container-narrow {
    max-width: 900px;
}

.container-wide {
    max-width: 1400px;
}

.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3rem 0;
}

.section-lg {
    padding: 7rem 0;
}

.section-gray {
    background-color: var(--color-bg-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: 0.75rem;
}

.section-title p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-title .subtitle {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ==========================================================================
   5. Header
   ========================================================================== */

.ieum-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    z-index: var(--z-header);
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.ieum-header.is-scrolled {
    box-shadow: var(--shadow-md);
}

.ieum-header.is-hidden {
    transform: translateY(-100%);
}

.ieum-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
}

.ieum-header-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.ieum-header-logo-mark {
    width: 30px;
    height: 30px;
    display: block;
    color: currentColor;
    flex-shrink: 0;
}

.ieum-header-logo-img {
    height: 32px;
    width: auto;
}

.ieum-header-logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    line-height: 1;
}

/* Desktop Navigation */
.ieum-nav {
    display: none;
    align-items: center;
}

.ieum-nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.ieum-nav-item {
    position: relative;
}

.ieum-nav-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    padding: 0.5rem 0;
    position: relative;
    white-space: nowrap;
}

.ieum-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

.ieum-nav-item:hover .ieum-nav-link,
.ieum-nav-item.active .ieum-nav-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.ieum-nav-item:hover .ieum-nav-link::after,
.ieum-nav-item.active .ieum-nav-link::after {
    width: 100%;
}

.ieum-nav-arrow {
    font-size: var(--font-size-xs);
    transition: var(--transition);
}

.ieum-nav-item:hover .ieum-nav-arrow {
    transform: rotate(180deg);
}

/* Dropdown */
.ieum-nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 10;
}

.ieum-nav-item.has-dropdown:hover .ieum-nav-dropdown {
    opacity: 1;
    visibility: visible;
}

.ieum-dropdown-link {
    display: block;
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--color-text);
    transition: var(--transition-fast);
    white-space: nowrap;
}

.ieum-dropdown-link:hover,
.ieum-dropdown-link.active {
    color: var(--color-primary);
    background-color: rgba(43, 138, 62, 0.04);
}

/* Header Right Actions */
.ieum-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ieum-header-phone {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--color-primary);
    font-size: var(--font-size-md);
    position: relative;
    transition: var(--transition);
}

.ieum-header-phone:hover {
    background-color: rgba(43, 138, 62, 0.08);
    color: var(--color-primary);
}

.ieum-header-phone-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    border: 2px solid var(--color-white);
}

/* 24-hour Customer Service Button (header) */
.ieum-header-cs-btn {
    display: none;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    color: #FF6060;
    background-color: #FFE3E3;
    border-radius: var(--border-radius-full);
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.2s ease;
}

.ieum-header-cs-btn:hover {
    background-color: #FFD4D4;
    color: #FF6060;
}

.ieum-nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--color-accent);
    color: var(--color-white);
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
}

.ieum-nav-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 22px;
    padding: 0 8px;
    border-radius: 999px;
    background: var(--color-dark);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
}

.ieum-mobile-strip {
    border-top: 1px solid rgba(233, 233, 233, 0.9);
    overflow-x: auto;
    scrollbar-width: none;
    background: var(--color-white);
}

.ieum-mobile-strip::-webkit-scrollbar {
    display: none;
}

.ieum-mobile-strip-track {
    display: flex;
    align-items: center;
    gap: 0;
    min-width: max-content;
    padding: 0 12px;
}

.ieum-mobile-strip-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 12px 10px;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    white-space: nowrap;
    text-decoration: none;
}

.ieum-mobile-strip-link.is-active {
    color: var(--color-dark);
}

/* Hamburger Button */
.ieum-hamburger {
    display: none;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border-radius: var(--border-radius-sm);
}

.ieum-hamburger-line {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-dark);
    transition: var(--transition);
}

/* ==========================================================================
   5-1. Ieum Footer
   ========================================================================== */

.ieum-footer {
    margin-top: 16px;
    background: var(--color-white);
}

.ieum-footer__shell {
    width: 100%;
    max-width: var(--ieum-shell-width);
    margin: 0 auto;
}

.ieum-footer__cta {
    padding: 0 20px 56px;
}

.ieum-footer__cta-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 24px;
    border-radius: 12px;
    background: #988987;
    color: var(--color-white);
    text-decoration: none;
}

.ieum-footer__cta-card:hover {
    color: var(--color-white);
}

.ieum-footer__cta-copy {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ieum-footer__cta-copy strong {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.35;
}

.ieum-footer__cta-copy span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: rgba(233, 233, 233, 0.95);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    line-height: 1.3;
}

.ieum-footer__cta-copy span::after {
    content: '';
    width: 16px;
    height: 16px;
    background: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='black' d='M11.078 14.007a.833.833 0 0 1-1.18 0L4.358 8.467a.667.667 0 0 1 0-.94l5.54-5.54a.834.834 0 0 1 1.18 1.18L6.252 8l4.833 4.833a.833.833 0 0 1-.007 1.174Z'/%3E%3C/svg%3E") center / contain no-repeat;
    transform: rotate(180deg);
}

.ieum-footer__cta-mark {
    width: 72px;
    height: 72px;
    display: block;
    color: var(--color-white);
    flex-shrink: 0;
}

.ieum-footer__divider {
    width: 100%;
    height: 1px;
    background: var(--color-border);
}

.ieum-footer__info {
    padding: 56px 24px 84px;
}

.ieum-footer__brand {
    line-height: 0;
}

.ieum-footer__brand-mark {
    width: 40px;
    height: 40px;
    display: block;
    color: var(--color-dark);
}

.ieum-footer__content {
    display: grid;
    gap: 24px;
    margin-top: 24px;
}

.ieum-footer__links {
    display: grid;
    gap: 6px;
    color: var(--color-text);
    font-size: 0.9375rem;
    line-height: 1.45;
}

.ieum-footer__links span {
    color: var(--color-text);
}

.ieum-footer__links .is-strong {
    font-weight: var(--font-weight-bold);
}

.ieum-footer__company {
    display: grid;
    gap: 4px;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    line-height: 1.55;
}

.ieum-footer__company p {
    margin: 0;
}

.ieum-footer__divider--inner {
    margin-top: 40px;
}

.ieum-footer__bottom {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 40px;
}

.ieum-footer__bottom p {
    margin: 0;
    color: var(--color-text-light);
    font-size: 0.8125rem;
    line-height: 1.45;
}

.ieum-footer__social {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ieum-footer__social img {
    width: 24px;
    height: 24px;
    display: block;
}

/* ==========================================================================
   6. Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--border-radius-full);
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
    border: 2px solid transparent;
    text-align: center;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-md);
}

.btn-xl {
    padding: 1.125rem 2.5rem;
    font-size: var(--font-size-lg);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(43, 138, 62, 0.3);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-accent:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 135, 65, 0.3);
}

.btn-dark {
    background-color: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
}

.btn-dark:hover {
    background-color: #333;
    border-color: #333;
    color: var(--color-white);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-1px);
}

.btn-outline-white {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.btn-outline-dark {
    background-color: transparent;
    color: var(--color-dark);
    border-color: var(--color-border);
}

.btn-outline-dark:hover {
    background-color: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
}

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-white);
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background-color: #e05050;
    border-color: #e05050;
    color: var(--color-white);
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
    box-shadow: none;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
}

.btn-icon-lg {
    width: 48px;
    height: 48px;
}

/* ==========================================================================
   7. Forms
   ========================================================================== */

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.form-label .required {
    color: var(--color-danger);
    margin-left: 0.25rem;
}

.form-input,
.form-select,
.form-textarea {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-md);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(43, 138, 62, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: var(--color-bg-gray);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: var(--line-height-base);
}

.form-input-sm {
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
}

.form-input-lg {
    padding: 1rem 1.25rem;
    font-size: var(--font-size-lg);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: 0.375rem;
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: 0.375rem;
}

.form-input.is-error,
.form-select.is-error {
    border-color: var(--color-danger);
}

.form-input.is-error:focus,
.form-select.is-error:focus {
    box-shadow: 0 0 0 3px rgba(255, 96, 96, 0.1);
}

/* Radio Button Custom */
.form-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.form-radio {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    gap: 0.5rem;
}

.form-radio input[type="radio"] {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.form-radio input[type="radio"]:checked {
    border-color: var(--color-primary);
}

.form-radio input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.form-radio span {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* Checkbox Custom */
.form-checkbox {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    gap: 0.5rem;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.form-checkbox input[type="checkbox"]:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-checkbox input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.form-checkbox span {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* Inline Form */
.form-inline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-inline .form-input {
    flex: 1;
}

/* ==========================================================================
   8. Cards
   ========================================================================== */

.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.card-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-base);
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border-light);
}

.card-horizontal {
    display: flex;
    flex-direction: row;
}

.card-horizontal .card-img {
    width: 200px;
    aspect-ratio: auto;
    height: 100%;
}

.card-horizontal .card-body {
    flex: 1;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Feature Card */
.card-feature {
    text-align: center;
    padding: 2rem 1.5rem;
}

.card-feature .card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(43, 138, 62, 0.08);
    border-radius: 50%;
    margin: 0 auto 1.25rem;
    font-size: 1.5rem;
    color: var(--color-primary);
}

/* ==========================================================================
   9. Footer
   ========================================================================== */

.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-text);
    border-top: 1px solid var(--color-border);
    padding: 2.5rem 0 3.5rem;
}

/* Footer Nav Links (horizontal row with | separators) */
.footer-nav {
    margin-bottom: 1.5rem;
}

.footer-nav-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0;
}

.footer-nav-list li {
    display: flex;
    align-items: center;
}

.footer-nav-list li::after {
    content: '|';
    margin: 0 0.75rem;
    color: var(--color-border);
    font-size: var(--font-size-xs);
}

.footer-nav-list li:last-child::after {
    display: none;
}

.footer-nav-list a {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    transition: var(--transition-fast);
    white-space: nowrap;
}

.footer-nav-list a:hover {
    color: var(--color-dark);
}

.footer-nav-privacy {
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
}

/* Company Info (small gray text, inline spans) */
.footer-company-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem 0;
    font-size: var(--font-size-xs);
    color: var(--color-footer-text);
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.footer-company-info span {
    white-space: nowrap;
}

.footer-company-info span::after {
    content: '|';
    margin: 0 0.5rem;
    color: var(--color-border);
}

.footer-company-info span:last-child::after {
    display: none;
}

.footer-company-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-light);
}

.footer-company-info a {
    color: var(--color-footer-text);
}

.footer-company-info a:hover {
    color: var(--color-primary);
}

/* Social Icons */
.footer-social {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: var(--color-footer-text);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
    border: 1px solid var(--color-border);
}

.footer-social a:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Copyright */
.footer-copyright {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ==========================================================================
   10. Back to Top Button
   ========================================================================== */

.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
    z-index: var(--z-back-to-top);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ==========================================================================
   11. Fixed Bottom CTA Bar (Mobile)
   ========================================================================== */

.mobile-cta-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-bottom-cta);
    background-color: var(--color-white);
    box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.1);
}

.mobile-cta-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.75rem 0.5rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    text-align: center;
    transition: var(--transition-fast);
}

.mobile-cta-btn i {
    font-size: 1.125rem;
}

.mobile-cta-btn:hover {
    color: var(--color-white);
    filter: brightness(0.9);
}

.mobile-cta-btn.cta-phone {
    background-color: var(--color-primary);
}

.mobile-cta-btn.cta-kakao {
    background-color: var(--color-accent);
}

.mobile-cta-btn.cta-estimate {
    background-color: var(--color-dark);
}

/* ==========================================================================
   12. Mobile Navigation Overlay
   ========================================================================== */

.ieum-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-overlay);
    visibility: hidden;
    opacity: 0;
    transition: var(--transition);
    background-color: rgba(0, 0, 0, 0.5);
}

.ieum-mobile-overlay.is-open {
    visibility: visible;
    opacity: 1;
}

.ieum-mobile-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 85%;
    max-width: 360px;
    background-color: var(--color-white);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
}

.ieum-mobile-overlay.is-open .ieum-mobile-panel {
    transform: translateX(0);
}

/* Mobile Nav Header */
.ieum-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border-light);
    flex-shrink: 0;
}

.ieum-mobile-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
}

.ieum-mobile-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--color-text);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.ieum-mobile-close:hover {
    background-color: var(--color-bg-gray);
}

/* Mobile Nav Body */
.ieum-mobile-body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.ieum-mobile-list {
    display: flex;
    flex-direction: column;
}

.ieum-mobile-item {
    border-bottom: 1px solid var(--color-border-light);
}

.ieum-mobile-item:last-child {
    border-bottom: none;
}

.ieum-mobile-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    transition: var(--transition-fast);
    width: 100%;
    text-align: left;
}

.ieum-mobile-link:hover,
.ieum-mobile-link.active {
    color: var(--color-primary);
    background-color: rgba(43, 138, 62, 0.04);
}

.ieum-mobile-link.active {
    font-weight: var(--font-weight-bold);
}

.ieum-mobile-link i {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    font-size: var(--font-size-md);
}

/* Mobile Toggle Button (for submenus) */
.ieum-mobile-toggle {
    cursor: pointer;
    position: relative;
}

.ieum-mobile-arrow {
    margin-left: auto;
    font-size: var(--font-size-xs);
    transition: var(--transition);
}

.ieum-mobile-item.is-expanded .ieum-mobile-arrow {
    transform: rotate(180deg);
}

/* Mobile Submenu */
.ieum-mobile-sub {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    background-color: var(--color-bg-gray);
}

.ieum-mobile-item.is-expanded .ieum-mobile-sub {
    max-height: 500px;
}

.ieum-mobile-sub-link {
    display: block;
    padding: 0.75rem 1.5rem 0.75rem 3.5rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    transition: var(--transition-fast);
}

.ieum-mobile-sub-link:hover,
.ieum-mobile-sub-link.active {
    color: var(--color-primary);
}

/* Mobile Nav Footer */
.ieum-mobile-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-shrink: 0;
}

.ieum-mobile-phone-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem;
    background-color: var(--color-bg-gray);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    transition: var(--transition-fast);
}

.ieum-mobile-phone-btn:hover {
    background-color: rgba(43, 138, 62, 0.08);
    color: var(--color-primary);
}

.ieum-mobile-phone-btn i {
    font-size: var(--font-size-md);
}

.ieum-mobile-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem;
    background-color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    transition: var(--transition-fast);
}

.ieum-mobile-cta-btn:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.ieum-mobile-cta-btn i {
    font-size: var(--font-size-md);
}

/* ==========================================================================
   13. Badges
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.625rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-full);
    line-height: 1.2;
    white-space: nowrap;
}

.badge-primary {
    background-color: rgba(43, 138, 62, 0.1);
    color: var(--color-primary);
}

.badge-accent {
    background-color: rgba(255, 135, 65, 0.12);
    color: var(--color-accent-dark);
}

.badge-new {
    background-color: var(--color-accent);
    color: var(--color-white);
    font-size: 0.625rem;
    padding: 0.125rem 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-dark {
    background-color: var(--color-dark);
    color: var(--color-white);
}

.badge-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 0.375rem;
    background-color: var(--color-danger);
    color: var(--color-white);
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    border-radius: 50%;
}

/* ==========================================================================
   14. Tables
   ========================================================================== */

.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.table th {
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    background-color: var(--color-bg-gray);
    white-space: nowrap;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background-color: rgba(43, 138, 62, 0.02);
}

/* ==========================================================================
   15. Tabs
   ========================================================================== */

.tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-item {
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    white-space: nowrap;
    position: relative;
    transition: var(--transition-fast);
    cursor: pointer;
}

.tab-item:hover {
    color: var(--color-primary);
}

.tab-item.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.tab-item.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
}

.tab-content {
    display: none;
    padding: 1.5rem 0;
}

.tab-content.active {
    display: block;
}

/* ==========================================================================
   16. Accordion / FAQ
   ========================================================================== */

.accordion {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--color-border-light);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.125rem 1.5rem;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-dark);
    cursor: pointer;
    transition: var(--transition-fast);
    gap: 1rem;
}

.accordion-header:hover {
    background-color: var(--color-bg-gray);
}

.accordion-header i {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.accordion-item.active .accordion-header i {
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.accordion-body-inner {
    padding: 0 1.5rem 1.25rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-loose);
}

.accordion-item.active .accordion-body {
    max-height: 500px;
}

/* ==========================================================================
   17. Hero / Banner
   ========================================================================== */

.hero {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-gray);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    padding: 2rem var(--container-padding);
    max-width: 700px;
}

.hero-content h1 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: 2rem;
}

/* ==========================================================================
   18. Toast / Notification
   ========================================================================== */

.toast-container {
    position: fixed;
    top: calc(var(--header-height) + 1rem);
    right: 1rem;
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background-color: var(--color-white);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 280px;
    max-width: 400px;
    transform: translateX(110%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: var(--font-size-xs);
}

.toast-success .toast-icon {
    background-color: rgba(43, 138, 62, 0.1);
    color: var(--color-primary);
}

.toast-error .toast-icon {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* ==========================================================================
   19. Loading / Spinner
   ========================================================================== */

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   20. Divider
   ========================================================================== */

.divider {
    height: 1px;
    background-color: var(--color-border);
    margin: 1.5rem 0;
}

.divider-thick {
    height: 8px;
    background-color: var(--color-bg-gray);
}

/* ==========================================================================
   21. Responsive Breakpoints
   ========================================================================== */

/* Desktop Large (1440px and below) */
@media (max-width: 1440px) {
    :root {
        --max-width: 1100px;
    }
}

/* Desktop (1024px and above): show header CS button */
@media (min-width: 1024px) {
    .ieum-header-cs-btn {
        display: inline-flex;
    }

    body {
        padding-top: 56px;
    }

    .ieum-nav {
        display: flex;
    }

    .ieum-mobile-strip {
        display: none;
    }
}

/* Tablet Landscape (1024px and below) */
@media (max-width: 1024px) {
    :root {
        --max-width: 960px;
    }

    .section {
        padding: 4rem 0;
    }

    .section-lg {
        padding: 5rem 0;
    }

    h1 {
        font-size: 2.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .ieum-nav-list {
        gap: 1.5rem;
    }

    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

/* Tablet Portrait (768px and below) */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }

    body {
        padding-top: 104px;
        padding-bottom: 60px;
    }

    .section {
        padding: 3rem 0;
    }

    .section-lg {
        padding: 4rem 0;
    }

    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .section-title {
        margin-bottom: 2rem;
    }

    .section-title h2 {
        font-size: 1.5rem;
    }

    .section-title p {
        font-size: var(--font-size-sm);
    }

    /* Header Mobile */
    .ieum-nav {
        display: none;
    }

    .ieum-header {
        height: auto;
    }

    .ieum-header-inner {
        padding: 13px 16px 12px;
    }

    .ieum-header-logo-text {
        display: none;
    }

    .ieum-header-right {
        gap: 10px;
    }

    .ieum-header-phone {
        display: inline-flex;
        width: 38px;
        height: 38px;
        border: 1px solid var(--color-border-light);
        border-radius: 999px;
        background: var(--color-white);
        color: var(--color-dark);
    }

    .ieum-hamburger {
        display: flex;
    }

    .ieum-mobile-strip {
        display: block;
    }

    /* Footer Mobile */
    .footer {
        padding: 2rem 0 3.5rem;
    }

    .footer-nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .footer-nav-list li::after {
        display: none;
    }

    .footer-company-info {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-company-info span::after {
        display: none;
    }

    .footer-social {
        justify-content: flex-start;
    }

    /* Bottom CTA visible */
    .mobile-cta-bar {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }

    /* Back to Top adjust for CTA bar */
    .back-to-top {
        bottom: 5rem;
    }

    /* Card Grid */
    .card-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .card-horizontal {
        flex-direction: column;
    }

    .card-horizontal .card-img {
        width: 100%;
        aspect-ratio: 16 / 10;
    }

    /* Hero */
    .hero {
        min-height: 360px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-content p {
        font-size: var(--font-size-md);
    }

    /* Table responsive */
    .table-wrap {
        margin-left: -1.25rem;
        margin-right: -1.25rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    /* Tabs scroll */
    .tabs {
        gap: 0;
    }

    .tab-item {
        padding: 0.75rem 1rem;
        font-size: var(--font-size-xs);
    }

    .ieum-footer__cta {
        padding: 0 16px 44px;
    }

    .ieum-footer__cta-card {
        padding: 16px 18px;
    }

    .ieum-footer__info {
        padding: 48px 20px 72px;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --header-height: 52px;
        --ieum-shell-padding: 16px;
    }

    html {
        font-size: 15px;
    }

    h1 {
        font-size: 1.625rem;
    }

    h2 {
        font-size: 1.375rem;
    }

    .section {
        padding: 2.5rem 0;
    }

    .btn {
        padding: 0.625rem 1.25rem;
    }

    .btn-lg {
        padding: 0.875rem 1.75rem;
        font-size: var(--font-size-sm);
    }

    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.625rem 0.875rem;
        font-size: var(--font-size-sm);
    }

    .card-body {
        padding: 1.25rem;
    }

    .hero {
        min-height: 300px;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .accordion-header {
        padding: 1rem 1.25rem;
        font-size: var(--font-size-sm);
    }

    .accordion-body-inner {
        padding: 0 1.25rem 1rem;
    }

    .toast-container {
        left: 1rem;
        right: 1rem;
    }

    .toast {
        min-width: auto;
        max-width: none;
        width: 100%;
    }
}

/* Small Mobile / Fold (360px and below) */
@media (max-width: 360px) {
    :root {
        --container-padding: 0.875rem;
    }

    html {
        font-size: 14px;
    }

    .mobile-cta-btn {
        padding: 0.625rem 0.25rem;
        font-size: 0.625rem;
    }

    .mobile-cta-btn i {
        font-size: 1rem;
    }
}

/* Large Desktop (1920px and above) */
@media (min-width: 1920px) {
    :root {
        --max-width: 1400px;
    }

    html {
        font-size: 17px;
    }
}

/* QHD (2560px and above) */
@media (min-width: 2560px) {
    :root {
        --max-width: 1600px;
    }

    html {
        font-size: 19px;
    }
}

/* UHD (3840px and above) */
@media (min-width: 3840px) {
    :root {
        --max-width: 2000px;
    }

    html {
        font-size: 22px;
    }
}

/* ==========================================================================
   22. Utility Classes
   ========================================================================== */

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Margins */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding */
.p-0 { padding: 0; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

/* Flexbox */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-start { display: flex; align-items: center; justify-content: flex-start; }
.flex-end { display: flex; align-items: center; justify-content: flex-end; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* Grid */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Visibility */
.hidden { display: none; }
.visible { display: block; }

.hidden-mobile {
    display: block;
}

.hidden-desktop {
    display: none;
}

@media (max-width: 768px) {
    .hidden-mobile {
        display: none;
    }

    .hidden-desktop {
        display: block;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Border Radius */
.rounded { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: var(--border-radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Background */
.bg-white { background-color: var(--color-white); }
.bg-gray { background-color: var(--color-bg-gray); }
.bg-dark { background-color: var(--color-dark); }
.bg-primary { background-color: var(--color-primary); }

/* Truncate */
.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   23. Animations
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.5s ease forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.5s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Scroll Reveal (JS will add .revealed class) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   24. Print Styles
   ========================================================================== */

@media print {
    .ieum-header,
    .footer,
    .back-to-top,
    .mobile-cta-bar,
    .ieum-mobile-overlay {
        display: none;
    }

    body {
        padding-top: 0;
        padding-bottom: 0;
        color: #000;
        background: #fff;
    }

    .section {
        padding: 1rem 0;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}