/* Reset & Basic Base Setup */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-orange: #ff6a00;
    --hover-orange: #e05e00;
    --light-orange-bg: #fff5ee;
    --text-black: #222222;
    --text-muted: #555555;
    --bg-light: #f5f5f5;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.08);
    --transition-speed: 0.3s;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-black);
    background-color: var(--bg-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loading-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loading-gif {
    max-width: 120px;
    height: auto;
}

/* Header Styling */
.site-header {
    background-color: var(--white);
    border-bottom: 3px solid var(--primary-orange);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-logo {
    max-height: 48px;
    width: auto;
    object-fit: contain;
}

/* Page Container Layout */
.main-container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 16px 48px;
    flex: 1;
}

/* Inline SVG Global Styling */
.icon-svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
    flex-shrink: 0;
}

/* Hero Section */
.hero-section {
    text-align: center;
    background: var(--white);
    padding: 32px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    margin-bottom: 24px;
    border-top: 4px solid var(--primary-orange);
}

.hero-title {
    font-size: 1.8rem;
    color: var(--text-black);
    margin-bottom: 8px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.update-card {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--light-orange-bg);
    color: var(--hover-orange);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 600;
}

.badge-date {
    background: var(--primary-orange);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 700;
    margin-left: 4px;
}

/* Highlight Warning Banner */
.warning-card {
    background-color: #fff9f5;
    border: 2px solid var(--primary-orange);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-soft);
    animation: pulseBorder 3s infinite ease-in-out;
}

.warning-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--hover-orange);
    margin-bottom: 10px;
}

.warning-icon {
    width: 28px;
    height: 28px;
    fill: var(--primary-orange);
}

.warning-header h2 {
    font-size: 1.3rem;
}

@keyframes pulseBorder {
    0% { border-color: var(--primary-orange); }
    50% { border-color: #ffaa66; }
    100% { border-color: var(--primary-orange); }
}

/* Contents Section */
.contents-nav {
    background: var(--white);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-soft);
}

.contents-title {
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--text-black);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.contents-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.nav-chip {
    background-color: var(--bg-light);
    color: var(--text-black);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
}

.nav-chip:hover, .nav-chip:focus-visible {
    background-color: var(--primary-orange);
    color: var(--white);
    border-color: var(--primary-orange);
    outline: none;
}

/* Policy Group & Accordion Setup */
.policy-group {
    margin-bottom: 36px;
}

.section-header-box {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding-left: 4px;
}

.section-icon {
    fill: var(--primary-orange);
    width: 28px;
    height: 28px;
}

.section-header-box h2 {
    font-size: 1.4rem;
    color: var(--text-black);
}

.accordion-item {
    background-color: var(--white);
    border-radius: 10px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    transition: border-color var(--transition-speed);
}

.accordion-item:hover {
    border-color: #fcc29a;
}

.accordion-header {
    width: 100%;
    background: none;
    border: none;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    cursor: pointer;
    gap: 12px;
    transition: background-color var(--transition-speed);
}

.accordion-header:focus-visible {
    outline: 2px solid var(--primary-orange);
    outline-offset: -2px;
}

.accordion-header[aria-expanded="true"] {
    background-color: var(--light-orange-bg);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-icon {
    fill: var(--primary-orange);
}

.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-black);
}

.card-summary {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.arrow-icon {
    transition: transform var(--transition-speed) ease;
    fill: var(--text-muted);
}

.accordion-header[aria-expanded="true"] .arrow-icon {
    transform: rotate(180deg);
    fill: var(--primary-orange);
}

/* Accordion Content Smooth Transition */
.accordion-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-speed) ease;
}

.accordion-content[aria-hidden="false"] {
    grid-template-rows: 1fr;
}

.content-body {
    overflow: hidden;
    padding: 0 20px;
    transition: opacity var(--transition-speed) ease, padding var(--transition-speed) ease;
    opacity: 0;
}

.accordion-content[aria-hidden="false"] .content-body {
    padding: 16px 20px 20px;
    opacity: 1;
}

.content-body p {
    margin-bottom: 12px;
    font-size: 0.98rem;
    color: #333333;
}

.content-body p:last-child {
    margin-bottom: 0;
}

.content-body ul, .content-body ol {
    margin: 12px 0 12px 24px;
}

.content-body li {
    margin-bottom: 6px;
    font-size: 0.95rem;
}

/* Highlight Components */
.highlight-badge {
    background-color: var(--light-orange-bg);
    color: var(--hover-orange);
    border: 1px solid #ffd6b3;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.95em;
    display: inline-block;
}

.info-alert {
    background-color: var(--light-orange-bg);
    border-left: 4px solid var(--primary-orange);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    margin: 12px 0;
}

.warning-alert {
    background-color: #fff0f0;
    border-left: 4px solid #d93025;
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    margin: 12px 0;
}

/* Policy Acknowledgement Card */
.ack-card {
    background-color: var(--white);
    border: 1px dashed var(--primary-orange);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 36px;
}

.ack-icon {
    fill: var(--primary-orange);
    width: 32px;
    height: 32px;
}

.ack-content h2 {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.ack-content p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* CTA Card Section */
.cta-card {
    background: linear-gradient(135deg, #ff6a00 0%, #e05e00 100%);
    color: var(--white);
    text-align: center;
    border-radius: 12px;
    padding: 36px 20px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-medium);
}

.cta-card h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.cta-card p {
    font-size: 1rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--hover-orange);
    text-decoration: none;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 30px;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.cta-button:hover, .cta-button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    outline: none;
}

/* Placeholder for Dynamic Footer */
.footer-placeholder {
    min-height: 100px;
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
}

/* Scroll Animation Effect Classes */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Media Queries for Responsive Design */
@media (max-width: 600px) {
    .hero-title {
        font-size: 1.4rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .accordion-header {
        padding: 14px 16px;
    }

    .card-title {
        font-size: 0.98rem;
    }

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

/* Reduced Motion Setting for Accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .warning-card {
        animation: none;
    }

    .accordion-content, .reveal, .arrow-icon, .cta-button {
        transition: none !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}