@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- CUSTOM PROPERTIES & THEME TOKENS --- */
:root {
    /* Color Palette - Light Mode (Sterile/Bio-Clinical) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.75);
    --border-glass: rgba(226, 232, 240, 0.8);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-cyan: #d97706; /* GSD Logo Amber/Tan */
    --accent-cyan-glow: rgba(217, 119, 6, 0.15);
    --accent-green: #1e293b; /* GSD Logo Dark Coat Slate-Navy */
    --accent-green-glow: rgba(30, 41, 59, 0.15);
    --accent-amber: #b45309;
    --accent-red: #dc2626;

    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --nav-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
    
    /* Layout & Durations */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="dark"] {
    /* Color Palette - Dark Mode (Tech Sanctuary) */
    --bg-primary: #090d16;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-glass: rgba(17, 24, 39, 0.65);
    --border-glass: rgba(255, 255, 255, 0.06);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --accent-cyan: #f97316; /* GSD Logo Amber/Tan (Neon contrast) */
    --accent-cyan-glow: rgba(249, 115, 22, 0.2);
    --accent-green: #94a3b8; /* GSD Logo Light Coat Slate */
    --accent-green-glow: rgba(148, 163, 184, 0.2);
    --accent-amber: #fb923c;
    --accent-red: #ef4444;

    --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --nav-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

/* --- BASE STYLES --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.85rem; margin: 2rem 0 1rem; position: relative; padding-bottom: 0.5rem; }
h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
    border-radius: 2px;
}
h3 { font-size: 1.4rem; margin: 1.5rem 0 0.75rem; }
p { margin-bottom: 1.25rem; color: var(--text-secondary); }
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-green); }

/* --- CONTAINERS & LAYOUT --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: var(--nav-shadow);
    transition: background-color var(--transition-normal), border var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.nav-item a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-item a:hover, .nav-item.active a {
    color: var(--accent-cyan);
    background-color: var(--accent-cyan-glow);
}

/* Controls */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-glass);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent-cyan);
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }
[data-theme="dark"] .theme-toggle .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle .moon-icon { display: none; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* --- HERO SECTION --- */
.hero {
    position: relative;
    padding: 5rem 0 4rem;
    background-color: var(--bg-primary);
    overflow: hidden;
    min-height: 520px;
    display: flex;
    align-items: center;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    object-position: right center;
    z-index: 0;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #ffffff 40%, rgba(255, 255, 255, 0.85) 60%, rgba(255, 255, 255, 0.1) 85%, rgba(255, 255, 255, 0) 100%);
    z-index: 1;
    pointer-events: none;
    transition: background var(--transition-normal);
}

[data-theme="dark"] .hero-overlay {
    background: linear-gradient(90deg, #090d16 40%, rgba(9, 13, 22, 0.85) 60%, rgba(9, 13, 22, 0.1) 85%, rgba(9, 13, 22, 0) 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
    width: 100%;
}

@media (max-width: 1200px) {
    .hero-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: 2rem;
    }
}

@media (max-width: 991px) {
    .hero-overlay {
        background: rgba(255, 255, 255, 0.88);
    }
    [data-theme="dark"] .hero-overlay {
        background: rgba(9, 13, 22, 0.88);
    }
    .captcha-group {
        display: flex;
        justify-content: center;
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: linear-gradient(135deg, var(--accent-cyan-glow), var(--accent-green-glow));
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 1.25rem;
}

.hero-title {
    line-height: 1.25;
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
}

.title-sub {
    display: block;
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-primary);
    font-family: var(--font-heading);
}

.title-sub span {
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* --- LEAD MAGNET BLOCK (SQUEEZE CARD) --- */
.squeeze-card {
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(249, 115, 22, 0.3);
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.15), var(--card-shadow);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    position: relative;
    max-width: 330px;
    width: 100%;
    margin-left: auto;
    scroll-margin-top: 100px;
    
    /* Pop Effect styling and entrance animation */
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    animation: popEntrance 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
    animation-delay: 0.2s;
}

[data-theme="dark"] .squeeze-card {
    background: rgba(17, 24, 39, 0.45);
}

.squeeze-card:hover {
    transform: translateY(-8px) scale(1.03);
    border-color: rgba(249, 115, 22, 0.85);
    box-shadow: 0 0 30px rgba(249, 115, 22, 0.45), 0 12px 24px rgba(0, 0, 0, 0.15);
}

@keyframes popEntrance {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(30px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.squeeze-block {
    align-self: end;
    margin-top: 2rem;
}

/* --- CAPTCHA CHECKBOX STYLE --- */
.captcha-group {
    display: none;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-bottom: 0;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, margin-bottom 0.4s ease;
}

.captcha-group.visible {
    max-height: 40px;
    opacity: 1;
    margin-bottom: 0.75rem;
}

.captcha-container {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
}

.captcha-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: relative;
    height: 22px;
    width: 22px;
    background-color: var(--bg-tertiary);
    border: 1.5px solid rgba(249, 115, 22, 0.4);
    border-radius: 6px;
    flex-shrink: 0;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.captcha-container:hover input ~ .checkmark {
    border-color: rgba(249, 115, 22, 0.85);
    box-shadow: 0 0 8px rgba(249, 115, 22, 0.3);
}

.captcha-container input:checked ~ .checkmark {
    background-color: rgba(249, 115, 22, 0.2);
    border-color: rgba(249, 115, 22, 0.85);
    box-shadow: 0 0 10px rgba(249, 115, 22, 0.4);
}

.checkmark::after {
    content: "";
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 5px;
    height: 9px;
    border: solid #f97316;
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg);
}

.captcha-container input:checked ~ .checkmark::after {
    display: block;
}

.squeeze-badge {
    background-color: var(--accent-cyan);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.squeeze-card h3 {
    margin-top: 0;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.squeeze-card p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.squeeze-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.squeeze-card .btn-submit {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    border-radius: var(--border-radius-sm);
}

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 4px var(--accent-cyan-glow);
}

.btn-submit {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px var(--accent-cyan-glow);
}

.btn-submit:active {
    transform: translateY(0);
}

.mock-pdf-preview {
    display: flex;
    justify-content: center;
    align-items: center;
}

.pdf-cover-container {
    perspective: 1000px;
}

.pdf-cover-img {
    width: 260px;
    height: auto;
    border-radius: 4px 16px 16px 4px;
    box-shadow: -10px 15px 30px rgba(0, 0, 0, 0.25);
    transform: rotateY(-15deg) rotateX(5deg);
    transition: transform var(--transition-normal);
}

.pdf-cover-container:hover .pdf-cover-img {
    transform: rotateY(-5deg) rotateX(0deg);
}

/* --- GOOGLE ADSENSE STYLES (ZONES A, B, C, D) --- */
.adsense-zone {
    display: none !important; /* Hidden for Google AdSense review compliance */
    margin: 2rem 0;
    text-align: center;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    position: relative;
    overflow: hidden;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.adsense-zone::before {
    content: 'SPONSOR ADVERTISEMENT';
    display: block;
    font-size: 0.65rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.ads-slot {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.adsense-zone-a { width: 100%; max-width: 970px; margin-left: auto; margin-right: auto; min-height: 90px; }
.adsense-zone-b { width: 100%; max-width: 728px; margin-left: auto; margin-right: auto; min-height: 90px; }
.adsense-zone-c { width: 100%; max-width: 300px; min-height: 250px; }
.adsense-zone-d {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99;
    margin: 0;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--border-glass);
    background-color: var(--bg-glass);
    backdrop-filter: blur(10px);
    min-height: 60px;
    padding: 0.5rem;
    box-shadow: 0 -4px 10px rgba(0,0,0,0.1);
}

.adsense-zone-d .ads-close {
    position: absolute;
    top: 5px;
    right: 10px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

/* --- CORE HUBS SUMMARY GRID --- */
.hubs-section {
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hubs-section .container {
    position: relative;
    z-index: 2;
}

.gsd-bg-container {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 350px;
    height: 350px;
    opacity: 0.08;
    pointer-events: none;
    z-index: 1;
    transition: opacity var(--transition-normal);
}

[data-theme="dark"] .gsd-bg-container {
    opacity: 0.05;
}

.gsd-bg-anim {
    width: 100%;
    height: 100%;
    fill: none;
    stroke: var(--accent-cyan);
    stroke-width: 1.2;
    stroke-linejoin: round;
    stroke-linecap: round;
}

.gsd-lines polygon {
    stroke-dashoffset: 0;
}

@keyframes gsdFloat {
    0% {
        transform: translateY(0) rotate(0deg) scale(1);
    }
    50% {
        transform: translateY(-10px) rotate(1.5deg) scale(1.03);
    }
    100% {
        transform: translateY(-20px) rotate(-1deg) scale(1.06);
    }
}

@keyframes gsdDraw {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes gsdPulse {
    0% {
        stroke-width: 1.0;
        opacity: 0.6;
    }
    100% {
        stroke-width: 1.5;
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .gsd-bg-container {
        width: 250px;
        height: 250px;
        bottom: 10px;
        right: 10px;
        opacity: 0.06;
    }
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.hubs-grid {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.hub-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: row;
    overflow: hidden;
    height: 250px;
    box-shadow: var(--card-shadow);
    
    /* Slide-in Entrance Transition setup - Slow, Subtle Motion */
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 2.6s cubic-bezier(0.22, 1, 0.36, 1), transform 2.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.hub-card.visible {
    opacity: 1;
    transform: translateX(0);
    /* Snappy hover transition after slide-in is complete */
    transition: opacity 2.6s cubic-bezier(0.22, 1, 0.36, 1), 
                transform var(--transition-normal), 
                border var(--transition-normal), 
                box-shadow var(--transition-normal);
}

/* Staggered Entrance Delays */
.hub-card:nth-child(1) { transition-delay: 0.05s; }
.hub-card:nth-child(2) { transition-delay: 0.15s; }
.hub-card:nth-child(3) { transition-delay: 0.25s; }
.hub-card:nth-child(4) { transition-delay: 0.35s; }
.hub-card:nth-child(5) { transition-delay: 0.45s; }

.hub-card:hover {
    transform: translateY(-4px) scale(1.005);
    border-color: rgba(249, 115, 22, 0.6);
    box-shadow: 0 15px 30px -10px var(--accent-cyan-glow);
}

.hub-image-container {
    width: 320px;
    height: 100%;
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
}

.hub-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-normal);
}

.hub-card:hover .hub-image-container img {
    transform: scale(1.05);
}

.hub-content-container {
    padding: 2rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    flex-grow: 1;
}

.hub-content-container h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.5rem;
    font-family: var(--font-heading);
    color: var(--text-primary);
}

.hub-content-container p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.hub-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.25rem;
    border-radius: var(--border-radius-sm);
    background: var(--accent-cyan-glow);
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid rgba(249, 115, 22, 0.2);
    box-shadow: 0 0 12px rgba(249, 115, 22, 0.15);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    align-self: flex-start;
    animation: linkGlowPulse 4s ease-in-out infinite alternate;
}

.hub-link svg {
    transition: transform var(--transition-fast);
}

.hub-link:hover {
    transform: translateY(-1px);
    border-color: rgba(249, 115, 22, 0.85);
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.45);
    background: rgba(249, 115, 22, 0.15);
}

.hub-card:hover .hub-link svg {
    transform: translateX(4px);
}

@keyframes linkGlowPulse {
    0% {
        box-shadow: 0 0 8px rgba(249, 115, 22, 0.1);
        border-color: rgba(249, 115, 22, 0.15);
    }
    100% {
        box-shadow: 0 0 16px rgba(249, 115, 22, 0.35);
        border-color: rgba(249, 115, 22, 0.45);
    }
}

@media (max-width: 991px) {
    .hub-image-container {
        width: 250px;
    }
}

@media (max-width: 768px) {
    .hub-card {
        flex-direction: column;
        height: auto;
        transform: translateY(15px) !important;
        opacity: 0;
    }
    
    .hub-card.visible {
        transform: translateY(0) !important;
        opacity: 1;
    }
    
    .hub-image-container {
        width: 100%;
        height: 200px;
    }
    
    .hub-content-container {
        padding: 1.5rem;
    }
}

/* --- CLINICAL CONTENT STYLING --- */
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0;
}

@media (min-width: 992px) {
    .content-grid-sidebar {
        grid-template-columns: 2.7fr 1.3fr;
    }
}

.main-content {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-widget {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 1.75rem;
    box-shadow: var(--card-shadow);
}

/* Clinical Alert Boxes */
.clinical-alert {
    background-color: var(--accent-cyan-glow);
    border-left: 4px solid var(--accent-cyan);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.clinical-alert.warning {
    background-color: rgba(217, 119, 6, 0.08);
    border-left-color: var(--accent-amber);
}

.clinical-alert.danger {
    background-color: rgba(220, 38, 38, 0.08);
    border-left-color: var(--accent-red);
}

.clinical-alert-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.clinical-alert p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Tables styling */
.table-wrapper {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-glass);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

th, td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-glass);
}

th {
    background-color: var(--bg-tertiary);
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
}

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

tbody tr {
    background-color: var(--bg-primary);
    transition: background-color var(--transition-fast);
}

tbody tr:hover {
    background-color: var(--bg-secondary);
}

/* --- INTERACTIVE TOOLS DESIGN --- */
.interactive-tool {
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 2.25rem;
    margin: 2.5rem 0;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.interactive-tool h3 {
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    margin-bottom: 1.25rem;
}

.interactive-tool h3::before {
    content: '🔧';
    font-size: 1.25rem;
}

/* 1. Symptom Checklist Tool */
.checklist-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    cursor: pointer;
    transition: border var(--transition-fast), box-shadow var(--transition-fast);
}

.checklist-item:hover {
    border-color: var(--accent-cyan);
}

.checklist-item input[type="checkbox"] {
    margin-top: 0.25rem;
    accent-color: var(--accent-cyan);
    width: 18px;
    height: 18px;
}

.checklist-item-content h4 {
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}

.checklist-item-content p {
    font-size: 0.85rem;
    margin-bottom: 0;
    color: var(--text-muted);
}

.tool-result {
    display: none;
    background-color: var(--bg-primary);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
    margin-top: 1.5rem;
    animation: fadeIn var(--transition-normal);
}

/* 2. Rehab Scheduler & Timer Tool */
.rehab-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 0.5rem;
}

.rehab-tab-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.rehab-tab-btn.active {
    background-color: var(--accent-green-glow);
    color: var(--accent-green);
}

.rehab-content-pane {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.rehab-content-pane.active {
    display: block;
}

.rehab-checklist {
    list-style: none;
    margin-bottom: 1.5rem;
}

.rehab-checklist-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.rehab-checklist-item input[type="checkbox"] {
    accent-color: var(--accent-green);
    width: 18px;
    height: 18px;
}

.rehab-timer-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 1rem 1.5rem;
}

.timer-digits {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
}

.timer-controls {
    display: flex;
    gap: 0.5rem;
}

.btn-timer {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    transition: background var(--transition-fast);
}

.btn-timer:hover {
    background-color: var(--border-glass);
}

/* 3. Progression Calculator */
.progression-calculator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .progression-calculator-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.calculator-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.calculator-group label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
}

.calculator-group select, .calculator-group input {
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-family: var(--font-body);
}

.btn-calc {
    width: 100%;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.btn-calc:hover {
    opacity: 0.9;
}

/* 4. Mobility Gear Matcher */
.gear-stage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.gear-stage-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: border var(--transition-fast), background var(--transition-fast);
}

.gear-stage-card.active {
    border-color: var(--accent-cyan);
    background-color: var(--accent-cyan-glow);
}

.gear-stage-num {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-muted);
}

.gear-stage-card.active .gear-stage-num {
    color: var(--accent-cyan);
}

.gear-stage-title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.25rem;
}

.gear-stage-info-pane {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
    animation: fadeIn var(--transition-normal);
}

/* --- FOOTER --- */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-glass);
    padding: 4rem 0 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid var(--border-glass);
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
    }
}

/* --- KEYFRAME ANIMATIONS --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 991px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    .hero-badge { margin: 0 auto 1.25rem; }
    .squeeze-card { max-width: 500px; margin: 0 auto; }
    .pdf-cover-img { width: 220px; }
}

@media (max-width: 767px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        border-bottom: 1px solid var(--border-glass);
        padding: 1.5rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        box-shadow: var(--nav-shadow);
    }
    
    .nav-menu.open {
        display: flex;
    }
    
    .menu-toggle {
        display: block;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    .hero-title { margin-bottom: 1.25rem; }
    .title-main { font-size: 1.25rem; }
    .title-sub { font-size: 2.25rem; }
    .interactive-tool { padding: 1.5rem; }
    .gear-stage-grid { grid-template-columns: 1fr; }
}

/* --- LEGAL AND CONTACT STYLING --- */
textarea.form-input {
    min-height: 150px;
    resize: vertical;
    font-family: inherit;
}

.status-message {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-md);
    margin-top: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
    display: none;
}

.status-message.success {
    background-color: rgba(16, 185, 129, 0.12);
    border: 1px solid #10b981;
    color: #10b981;
    display: block;
}

.status-message.error {
    background-color: rgba(220, 38, 38, 0.12);
    border: 1px solid #dc2626;
    color: #dc2626;
    display: block;
}

.legal-container {
    max-width: 850px;
    margin: 8rem auto 5rem;
    padding: 0 1.5rem;
}

.legal-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    box-shadow: var(--card-shadow);
}

.legal-card h1 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 1rem;
}

.legal-card h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.legal-card p {
    margin-bottom: 1.25rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.legal-card ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.legal-card li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .legal-container {
        margin-top: 6rem;
    }
    
    .legal-card {
        padding: 1.75rem;
    }
    
    .legal-card h1 {
        font-size: 1.75rem;
    }
    
    .legal-card h2 {
        font-size: 1.25rem;
        margin-top: 1.75rem;
    }
}

/* --- SUBPAGE FADE IN ANIMATION --- */
.subpage main, .subpage footer {
    opacity: 0;
    animation: pageFadeIn 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes pageFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- BLOG PAGE DESIGN --- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2.5rem 2rem;
    margin: 3rem 0;
}

.blog-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-normal), border var(--transition-normal), box-shadow var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-4px) scale(1.01);
    border-color: rgba(249, 115, 22, 0.45);
    box-shadow: 0 12px 24px -8px var(--accent-cyan-glow);
}

.blog-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-normal);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--accent-cyan);
    color: #ffffff;
    padding: 0.35rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.blog-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    display: flex;
    gap: 1rem;
}

.blog-card-content h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    line-height: 1.4;
    color: var(--text-primary);
    font-family: var(--font-heading);
}

.blog-card-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.blog-card-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: color var(--transition-fast);
    text-decoration: none;
    margin-top: auto;
    align-self: flex-start;
}

.blog-card-link svg {
    transition: transform var(--transition-fast);
}

.blog-card:hover .blog-card-link {
    color: var(--accent-amber);
}

.blog-card:hover .blog-card-link svg {
    transform: translateX(4px);
}

/* Individual blog page adjustments */
.blog-post-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 1rem;
}

.blog-post-meta span {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.blog-post-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: 450px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: 2.5rem;
    border: 1px solid var(--border-glass);
}

.blog-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.blog-citation-block {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent-cyan);
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.blog-citation-block h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.blog-citation-block p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
}

/* --- FOOTER DIRECT DOWNLOAD BUTTON --- */
.footer-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.65rem 1.25rem;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 12px var(--accent-cyan-glow);
    margin-top: 0.5rem;
}

.footer-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px var(--accent-cyan-glow);
    color: #ffffff !important;
    text-decoration: none;
}

.footer-download-btn:active {
    transform: translateY(0);
}