:root {
    /* Light Theme */
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --accent: #0f172a;
    --accent-hover: #1e293b;
    --accent-blue: #2563eb;
    --accent-light: rgba(37, 99, 235, 0.06);
    --text-main: #0f172a;
    --text-dim: #475569;
    --border: #f1f5f9;
    --border-hover: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.02);
    --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.08);
}

body.dark-mode {
    /* Dark Theme */
    --bg-main: #0b0f19;
    --bg-card: #111827;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --accent-blue: #0ea5e9;
    --accent-light: rgba(14, 165, 233, 0.08);
    --text-main: #f9fafb;
    --text-dim: #9ca3af;
    --border: #1f2937;
    --border-hover: #374151;
    --success: #10b981;
    --danger: #ef4444;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
}


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

html, body {
    width: 100%;
    min-width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.03) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.03) 0px, transparent 50%);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background-image: 
        radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.02) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.02) 0px, transparent 50%);
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-main);
    letter-spacing: -0.03em;
    font-weight: 800;
    -webkit-font-smoothing: antialiased;
}

/* Buttons */
.btn-primary {
    position: relative;
    background: linear-gradient(135deg, var(--danger), #b8002a);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', sans-serif;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.25);
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 30%;
    height: 200%;
    background: rgba(255, 255, 255, 0.25);
    transform: rotate(30deg);
    transition: none;
    opacity: 0;
}

.btn-primary:hover::after {
    left: 150%;
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(239, 68, 68, 0.35);
}

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

.pulse-btn {
    animation: pulse 2.2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.45); }
    70% { box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Navigation */
.top-nav {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(241, 245, 249, 0.8);
    padding: 0.85rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

body.dark-mode .top-nav {
    background: rgba(17, 24, 39, 0.8);
    border-bottom: 1px solid rgba(31, 41, 55, 0.8);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 54px; 
    height: 54px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-hover);
    color: var(--text-main);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
    font-family: 'Outfit', sans-serif;
    box-shadow: var(--shadow-sm);
}

.logo-text h1 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.1;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-dim);
    font-weight: 500;
}

/* Hero Section */
.hero {
    position: relative;
    text-align: center;
    padding: 7rem 2rem 5rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, rgba(96, 165, 250, 0.03) 45%, transparent 70%);
    z-index: -1;
    pointer-events: none;
    filter: blur(50px);
}

body.dark-mode .hero::before {
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, rgba(99, 102, 241, 0.04) 50%, transparent 75%);
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw + 1rem, 4.2rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    background-image: linear-gradient(135deg, var(--text-main) 30%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.02));
}

body.dark-mode .hero h1 {
    background-image: linear-gradient(135deg, #ffffff 40%, #7dd3fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-dim);
    font-size: clamp(1rem, 2vw + 0.5rem, 1.35rem);
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 2.5rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.01em;
}

/* Content */
.content-wrapper {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 6rem;
    /* Never clip carousel children on mobile */
    overflow: visible;
}

.section-header h2 {
    font-size: clamp(1.65rem, 3vw + 0.5rem, 2.25rem);
    margin-bottom: 0.75rem;
}

.cards-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card, .info-card, .login-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.service-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Info Cards */
.info-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1.5px solid var(--border);
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-blue);
    opacity: 0.8;
}

#card-sedes::before {
    background: linear-gradient(90deg, var(--accent-blue), #60a5fa);
}

#card-profesionales::before {
    background: linear-gradient(90deg, var(--success), #34d399);
}

#card-coberturas::before {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.info-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

body.dark-mode .info-card:hover {
    border-color: var(--border-hover);
}

.info-card .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.info-card .icon {
    background: var(--accent-light);
    color: var(--accent-blue);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.35rem;
    transition: transform 0.3s;
}

.info-card:hover .icon {
    transform: scale(1.1) rotate(5deg);
}

.info-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.info-item p {
    color: var(--text-dim);
    font-size: 0.92rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Pricing Table */
.pricing-table {
    width: 100%;
    border-collapse: collapse;
}

.pricing-table tr {
    transition: background-color 0.2s;
}

.pricing-table tr:hover {
    background-color: var(--accent-light);
}

.pricing-table td {
    padding: 0.8rem 0.5rem;
    border-bottom: 1px dashed var(--border);
    font-size: 0.95rem;
}

.pricing-table .price {
    color: var(--accent-blue);
    font-weight: 700;
    text-align: right;
}

/* Specialty Badge Chips */
.badge-chip {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent-blue);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 0.4rem;
    margin-top: 0.4rem;
    text-transform: capitalize;
    border: 1px solid rgba(37, 99, 235, 0.08);
    transition: all 0.2s;
}

body.dark-mode .badge-chip {
    border: 1px solid rgba(14, 165, 233, 0.15);
}

.badge-chip:hover {
    background: var(--accent-blue);
    color: white;
}

/* Skeleton Loaders */
.skeleton-item {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.skeleton-line {
    height: 12px;
    background: var(--bg-main);
    border-radius: 6px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.skeleton-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.4) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: shimmer 1.5s infinite;
}

body.dark-mode .skeleton-line::after {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0) 100%
    );
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.skeleton-line.title { width: 70%; height: 16px; margin-bottom: 4px; }
.skeleton-line.short { width: 40%; }

/* Login Card */
.login-card {
    max-width: 450px;
    margin: 0 auto;
    border: 2px solid var(--accent-light);
}

.login-card .icon.large {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.form-group input {
    border-radius: 12px;
    padding: 0.85rem 1.25rem;
    background: #f8fafc;
}

.form-group input:focus {
    background: white;
}

/* Footer styling */
.main-footer {
    background: var(--bg-card);
    padding: 4rem 2rem;
    margin-top: 8rem;
    border-top: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/10;
    box-shadow: var(--shadow-sm);
    background: var(--border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 900px) {
    .cards-grid-3 {
        grid-template-columns: 1fr;
    }
    .hero h1 { font-size: 2.5rem; }
}

/* Info Item Spacing */
.info-item {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.info-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

/* Full Width Button */
.full-width {
    width: 100%;
}

/* Form Links */
.form-links {
    text-align: center;
    margin-top: 1rem;
}

.form-links a {
    color: var(--text-dim);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Login Form */
.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
}

.login-form input {
    width: 100%;
    border: 1px solid var(--border);
    font-size: 1rem;
    outline: none;
    transition: all 0.2s;
}

.login-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.05);
}

/* Section spacing */
.section-container + .info-section {
    margin-top: -2rem;
}

/* Footer */
.main-footer .small {
    color: var(--text-dim);
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* Service card lists */
.service-card ul {
    list-style: none;
    padding: 0;
}

.service-card li {
    padding: 0.6rem 0;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
}

.service-card li:last-child {
    border-bottom: none;
}

.service-card li::before {
    content: '✓ ';
    color: var(--accent);
    font-weight: 600;
}

/* Text colors helpers */
.text-accent { color: var(--accent); }
.text-success { color: #10b981; }
.text-danger { color: #ef4444; }

/* ==========================================================================
   RESPONSIVE — TABLET (≤ 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
    .nav-container { padding: 0 1.5rem; }
    .content-wrapper { padding: 1.5rem; gap: 4rem; }
    .cards-grid-3 { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}

/* ==========================================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ========================================================================== */
@media (max-width: 768px) {

    /* --- Navbar --- */
    .top-nav { padding: 0.65rem 0; }
    .nav-container { padding: 0 1rem; gap: 8px; }
    .logo-icon { width: 44px; height: 44px; font-size: 1rem; }
    .logo-text { display: none; }

    /* --- Hero --- */
    .hero {
        padding: 4rem 1.5rem 2.5rem;
    }

    .hero-badge {
        margin: 0 auto 1.5rem;
        display: flex;
        width: fit-content;
    }

    .hero p { margin-bottom: 2rem; }

    /* --- Content wrapper — explicit padding to match carousel margins --- */
    .content-wrapper { padding: 1.25rem; gap: 3rem; }

    /* --- Section container — never clip carousel children --- */
    .section-container { overflow: visible; }

    /* --- Section Headers — center on mobile --- */
    .section-header {
        text-align: center;
        overflow: visible;
    }
    .section-header h2 {
        word-break: break-word;
        overflow-wrap: break-word;
        white-space: normal;
    }
    .section-header p { font-size: 0.92rem; }

    /* --- Info Cards grid — single column --- */
    .cards-grid-3 { grid-template-columns: 1fr; gap: 1rem; }
    .info-card { padding: 1.25rem; }
    .service-card { padding: 1.25rem; }

    /* --- Pricing table --- */
    .pricing-table { table-layout: fixed; width: 100%; }
    .pricing-table tr td { padding: 0.65rem 0.25rem; font-size: 0.85rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .pricing-table tr td:first-child { width: 60%; white-space: normal; }
    .pricing-table .price { width: 40%; text-align: right; }

    /* ==============================================
       GALLERY CAROUSEL (mobile horizontal scroll)
       ============================================== */
    .gallery-grid {
        display: flex;
        flex-direction: row;
        gap: 1rem;
        overflow-x: auto;
        overflow-y: visible;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0.5rem 1.25rem 1.5rem;
        margin: 0 -1.25rem;
    }

    .gallery-grid::-webkit-scrollbar { display: none; }

    .gallery-item {
        flex: 0 0 82%;
        min-width: 82%;
        scroll-snap-align: center;
        border-radius: 18px;
        aspect-ratio: 4/3;
    }

    /* ==============================================
       TRATAMIENTOS CAROUSEL (mobile horizontal scroll)
       ============================================== */
    #tratamientos-grid {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        gap: 1rem;
        overflow-x: auto;
        overflow-y: visible;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0.5rem 1.25rem 1.5rem;
        /* Negative margin extends carousel edge-to-edge — must match content-wrapper padding */
        margin: 0 -1.25rem;
        /* Reset grid constraints */
        grid-template-columns: unset !important;
        width: calc(100% + 2.5rem);
    }

    #tratamientos-grid::-webkit-scrollbar { display: none; }

    #tratamientos-grid .service-card {
        flex: 0 0 78%;
        min-width: 78%;
        scroll-snap-align: center;
    }

    /* --- Footer --- */
    .main-footer { padding: 2.5rem 1rem; }
    .main-footer div[style] { gap: 0.75rem !important; }
}

/* ==========================================================================
   RESPONSIVE — SMALL PHONES (≤ 480px)
   ========================================================================== */
@media (max-width: 480px) {
    .btn-primary { padding: 0.55rem 1rem; font-size: 0.85rem; border-radius: 10px; }
    #theme-toggle { padding: 6px; font-size: 1rem; }
    .hero h1 { font-size: 1.9rem; }
    .hero p { font-size: 1rem; }

    .gallery-item {
        flex: 0 0 88%;
        min-width: 88%;
    }

    #tratamientos-grid .service-card {
        flex: 0 0 86%;
        min-width: 86%;
    }
}

/* ==========================================================================
   ADVANCED PREMIUM STYLING ADDITIONS
   ========================================================================== */

/* Background Ambient Orbs */
.bg-orb {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    z-index: -2;
    pointer-events: none;
    filter: blur(140px);
    opacity: 0.04;
    animation: float-orbs 25s infinite alternate ease-in-out;
    transition: background 0.5s;
}

body.dark-mode .bg-orb {
    opacity: 0.025;
}

.orb-1 {
    top: -15%;
    left: -15%;
    background: var(--accent-blue);
}

.orb-2 {
    bottom: -15%;
    right: -15%;
    background: #8b5cf6;
    animation-delay: -6s;
}

@keyframes float-orbs {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    50% { transform: translate(80px, 60px) scale(1.15) rotate(180deg); }
    100% { transform: translate(-40px, 120px) scale(0.9) rotate(360deg); }
}

/* Hero Badge Pill */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-light);
    color: var(--accent-blue);
    padding: 0.45rem 1rem;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1.75rem;
    border: 1px solid rgba(37, 99, 235, 0.1);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.05);
    animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

body.dark-mode .hero-badge {
    border-color: rgba(14, 165, 233, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background-color: #10b981;
    border-radius: 50%;
    position: relative;
    display: inline-block;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #10b981;
    border-radius: 50%;
    animation: badge-ping 1.5s infinite ease-out;
}

@keyframes badge-ping {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(3.5); opacity: 0; }
}

/* Gallery Sliding Caption */
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.25rem;
    background: linear-gradient(to top, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0.4) 60%, transparent 100%);
    color: #ffffff;
    font-family: 'Outfit', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    transform: translateY(100%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    gap: 8px;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* Button glow upgrade */
.pulse-btn {
    animation: pulse-ring 2.4s infinite;
}

@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.45), 0 4px 14px rgba(239, 68, 68, 0.25); }
    70% { box-shadow: 0 0 0 12px rgba(239, 68, 68, 0), 0 4px 14px rgba(239, 68, 68, 0.25); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0), 0 4px 14px rgba(239, 68, 68, 0.25); }
}

/* Entrance Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Background Noise and Grid Enhancements */
.bg-noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -4;
    pointer-events: none;
    opacity: 0.012;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

body.dark-mode .bg-noise {
    opacity: 0.022;
}

.bg-grid-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    pointer-events: none;
    background-size: 50px 50px;
    background-image: 
        linear-gradient(to right, rgba(37, 99, 235, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
    mask-image: radial-gradient(circle at 50% 25%, black 20%, rgba(0, 0, 0, 0.25) 60%, transparent 100%);
    -webkit-mask-image: radial-gradient(circle at 50% 25%, black 20%, rgba(0, 0, 0, 0.25) 60%, transparent 100%);
}

body.dark-mode .bg-grid-mesh {
    background-image: 
        linear-gradient(to right, rgba(56, 189, 248, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
}

/* ==========================================================================
   SCROLL REVEAL (INTERSECTION OBSERVER)
   ========================================================================== */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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


/* ==========================================================================
   CAROUSEL SWIPE HINT
   ========================================================================== */
.carousel-hint {
    display: none; /* hidden on desktop */
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.04em;
    margin-top: 0.6rem;
    animation: hint-nudge 2s ease-in-out infinite;
    opacity: 0.75;
}

@media (max-width: 768px) {
    .carousel-hint {
        display: block;
    }
}

@keyframes hint-nudge {
    0%, 100% { transform: translateX(0); opacity: 0.75; }
    50% { transform: translateX(6px); opacity: 1; }
}