:root {
    /* ===== NEUTRALS (backgrounds, surfaces, text) ===== */
    --neutral-0: #ffffff;
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;

    /* ===== PRIMARY / BRAND (electric blue) ===== */
    --brand-400: #60a5fa;   /* lighter variant */
    --brand-500: #3b82f6;   /* main CTA, links */
    --brand-600: #2563eb;   /* hover, active */
    --brand-700: #1d4ed8;   /* pressed */

    /* ===== SECONDARY ACCENT (hot pink/magenta) ===== */
    --accent-400: #f472b6;
    --accent-500: #ec4899;  /* playful accent */
    --accent-600: #db2777;

    /* ===== WARM ACCENT (sunny yellow) ===== */
    --warm-400: #fbbf24;
    --warm-500: #f59e0b;
    --warm-600: #d97706;

    /* ===== SEMANTIC (success, warning, danger) ===== */
    --success-500: #10b981;
    --success-600: #059669;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --danger-500: #ef4444;
    --danger-600: #dc2626;

    /* ===== SURFACES & GRADIENTS ===== */
    --surface-gradient: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 50%, #fef3c7 100%);
    --card-bg: rgba(255, 255, 255, 0.98);
    --card-border: rgba(15, 23, 42, 0.08);

    /* ===== LAYOUT ===== */
    --nav-offset: 4.75rem;
    --footer-height: 5rem;

    /* ===== TEXT TOKENS ===== */
    --text-primary: var(--neutral-900);
    --text-secondary: var(--neutral-700);
    --text-muted: var(--neutral-500);
    --text-inverse: var(--neutral-0);

    /* ===== BORDERS & SHADOWS ===== */
    --border-subtle: rgba(15, 23, 42, 0.06);
    --border-default: rgba(15, 23, 42, 0.12);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
}

/* ===== BASE & LAYOUT ===== */
html {
    scroll-behavior: smooth;
}

html, body {
    height: 100%;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--surface-gradient);
    background-attachment: fixed;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    color: var(--text-primary);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main, .content {
    flex: 1 0 auto;
    padding-top: var(--nav-offset);
    padding-bottom: var(--footer-height);
}

/* ===== NAVBAR ===== */
.navbar {
    backdrop-filter: blur(12px) saturate(180%);
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
}

.navbar-brand,
.nav-link {
    color: var(--text-primary) !important;
    font-weight: 600;
}

.nav-link:hover {
    color: var(--brand-500) !important;
}

.brand-badge {
    background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
    border: none;
    color: var(--text-inverse);
    padding: 0.35rem 0.75rem;
    border-radius: 8px;
    font-weight: 700;
}

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 6rem 0 4rem;
    overflow: hidden;
}

.hero h1 {
    color: var(--text-primary);
    font-weight: 800;
    font-size: 2.5rem;
    line-height: 1.1;
}

@media (min-width: 992px) {
    .hero h1 {
        font-size: 3rem;
    }
}

/* ===== DECORATIVE SPARK ===== */
.spark {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(4px 4px at 12% 25%, var(--brand-400), transparent 50%),
        radial-gradient(3px 3px at 35% 65%, var(--accent-400), transparent 50%),
        radial-gradient(5px 5px at 75% 20%, var(--warm-400), transparent 50%),
        radial-gradient(3px 3px at 60% 80%, var(--brand-500), transparent 50%);
    opacity: 0.4;
    animation: sparkle 8s ease-in-out infinite alternate;
}

@keyframes sparkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* ===== CARDS / GLASS ===== */
.glass {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(8px);
}

/* ===== TEXT UTILITIES ===== */
.text-gradient {
    background: linear-gradient(90deg, var(--brand-500), var(--accent-500) 50%, var(--warm-500));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

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

.text-white,
.text-white-50 {
    color: var(--text-primary) !important;
}

.text-white-50 {
    color: var(--text-muted) !important;
}

/* ===== BUTTON ANIMATIONS ===== */

/* Subtle pulse animation on page load */
@keyframes btn-pulse {
    0%, 100% { 
        transform: scale(1); 
        box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
    }
    50% { 
        transform: scale(1.02); 
        box-shadow: 0 6px 18px rgba(59, 130, 246, 0.35);
    }
}

/* Bounce effect on hover */
@keyframes btn-bounce {
    0%, 100% { transform: translateY(-2px); }
    50% { transform: translateY(-6px); }
}

/* Ripple effect on click */
@keyframes btn-ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* Playful wobble for extra engagement */
@keyframes btn-wobble {
    0%, 100% { transform: translateX(0) rotate(0); }
    25% { transform: translateX(-4px) rotate(-2deg); }
    50% { transform: translateX(4px) rotate(2deg); }
    75% { transform: translateX(-4px) rotate(-2deg); }
}

/* ===== BUTTONS ===== */
.btn {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    white-space: nowrap;
}

/* Ripple effect pseudo-element */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
}

/* Disable ripple effect for small buttons to prevent visual issues */
.btn-sm::after {
    content: none;
}

.btn:active::after {
    animation: btn-ripple 0.6s ease-out;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
    color: var(--text-inverse);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
    animation: btn-pulse 2s ease-in-out infinite;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.35);
    animation: btn-bounce 0.5s ease-in-out;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.btn-outline-light {
    background: var(--neutral-0);
    border: 2px solid var(--brand-500);
    color: var(--brand-600);
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background: var(--brand-500);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.2);
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Fun wobble on focus for accessibility */
.btn:focus-visible {
    animation: btn-wobble 0.4s ease-in-out;
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .btn::after,
    .btn-primary {
        animation: none !important;
        transition: none !important;
    }
    
    .btn:hover {
        transform: none !important;
    }
}

/* ===== BADGES ===== */
.badge {
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: 999px;
}

.badge.text-bg-light {
    background: linear-gradient(135deg, var(--neutral-100), var(--neutral-200));
    color: var(--text-primary);
}

.badge-soft {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(236, 72, 153, 0.05));
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--brand-600);
}

/* ===== ICON CIRCLE ===== */
.icon-circle {
    width: 3.5rem;
    height: 3.5rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-400), var(--accent-400));
    color: var(--text-inverse);
    font-size: 1.5rem;
}

/* ===== FORMS ===== */
.form-control {
    border-radius: 10px;
    padding: 0.85rem 1rem;
    border: 2px solid var(--border-default);
    background: var(--neutral-0);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    border-color: var(--brand-500);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    outline: none;
}

/* ===== DIVIDER ===== */
.divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border-default) 50%, transparent);
    margin: 2rem 0;
}

/* ===== FOOTER (FIXED AT BOTTOM) ===== */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1020;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(241, 245, 249, 0.98));
    backdrop-filter: blur(12px) saturate(180%);
    border-top: 1px solid var(--border-subtle);
    box-shadow: 0 -2px 12px rgba(15, 23, 42, 0.04);
    padding: 1rem 0;
}

.footer a {
    color: var(--brand-500);
    font-weight: 600;
}

.footer a:hover {
    color: var(--accent-500);
}

/* ===== FOCUS STATES (ACCESSIBILITY) ===== */
a:focus,
button:focus,
input:focus,
.btn:focus {
    outline: 3px solid var(--brand-400);
    outline-offset: 3px;
}

/* ===== SEMANTIC UTILITIES ===== */
.text-success { color: var(--success-600); }
.text-warning { color: var(--warning-600); }
.text-danger { color: var(--danger-600); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero {
        padding: 4rem 0 2rem;
    }

    .hero h1 {
        font-size: 1.85rem;
    }

    .btn {
        width: 100%;
    }

    .btn + .btn {
        margin-top: 0.75rem;
    }

    /* Navigation buttons should not be full width */
    .navbar .btn {
        width: auto;
    }
}

/* ===== PILL ===== */
.pill {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(236, 72, 153, 0.06));
    border: 1px solid rgba(59, 130, 246, 0.15);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-weight: 600;
}

/* ===== SECTION ===== */
.section {
    padding: 4rem 0;
}

/* ===== SHADOW SOFT ===== */
.shadow-soft {
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.15),
                0 4px 16px rgba(236, 72, 153, 0.08);
}

/* ===== AI CHAT WIDGET ===== */
.chat-toggle {
    position: fixed;
    bottom: 3.5rem;
    right: 2rem;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: var(--brand-500);
    color: var(--text-inverse);
    border: none;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    z-index: 1030;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: chat-pulse 2s ease-in-out infinite;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
}

.chat-toggle.hidden {
    opacity: 0;
    transform: scale(0);
    pointer-events: none;
}

@keyframes chat-pulse {
    0%, 100% {
        box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 8px 32px rgba(59, 130, 246, 0.5), 0 0 0 8px rgba(59, 130, 246, 0.1);
    }
}

.chat-panel {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 400px;
    height: 600px;
    max-height: calc(100vh - 8rem);
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.2);
    display: flex;
    flex-direction: column;
    z-index: 1030;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--card-border);
    overflow: hidden;
}

.chat-panel.active {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.chat-header {
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
    color: var(--text-inverse);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.chat-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    backdrop-filter: blur(8px);
}

.btn-close-chat {
    background: transparent;
    border: none;
    color: var(--text-inverse);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
}

.btn-close-chat:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--neutral-300);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-400);
}

.chat-message {
    display: flex;
    gap: 0.75rem;
    animation: message-slide-in 0.3s ease-out;
}

@keyframes message-slide-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bot-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-400), var(--accent-400));
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.message-content {
    max-width: 75%;
    background: var(--neutral-100);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
    color: var(--text-inverse);
}

.message-content p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.message-time {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    opacity: 0.7;
}

.chat-input-container {
    padding: 1rem;
    border-top: 1px solid var(--border-subtle);
    background: var(--neutral-50);
}

.chat-form {
    display: flex;
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-default);
    border-radius: 10px;
    font-size: 0.95rem;
    background: var(--neutral-0);
    color: var(--text-primary);
    transition: border-color 0.2s ease;
}

.chat-input:focus {
    outline: none;
    border-color: var(--brand-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn-send {
    width: 3rem;
    height: 3rem;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
    color: var(--text-inverse);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-send:hover {
    background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
    transform: scale(1.05);
}

.btn-send:active {
    transform: scale(0.95);
}

/* Responsive chat widget */
@media (max-width: 768px) {
    .chat-panel {
        width: calc(100vw - 2rem);
        height: calc(100vh - 6rem);
        max-height: none;
        bottom: 1rem;
        right: 1rem;
    }

    .chat-toggle {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 3.5rem;
        height: 3.5rem;
        font-size: 1.5rem;
    }
}

/* ===== COOKIE CONSENT BANNER ===== */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1040;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.98));
    backdrop-filter: blur(16px) saturate(180%);
    border-top: 2px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 -8px 32px rgba(15, 23, 42, 0.4);
    padding: 1.5rem 0;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cookie-consent.show {
    transform: translateY(0);
    opacity: 1;
}

.cookie-consent-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.cookie-consent-text {
    flex: 1;
    color: var(--text-inverse);
}

.cookie-consent-text h5 {
    color: var(--text-inverse);
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.cookie-consent-text p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.cookie-consent-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.cookie-consent-actions .btn-link {
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
}

.cookie-consent-actions .btn-link:hover {
    text-decoration: underline !important;
}

.cookie-consent-actions .btn-light {
    background: var(--neutral-0);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.cookie-consent-actions .btn-light:hover {
    background: var(--brand-500);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.cookie-consent-actions .btn-light:active {
    transform: translateY(0);
}

/* Cookie icon animation */
@keyframes cookie-bounce {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    25% {
        transform: rotate(-5deg) scale(1.05);
    }
    75% {
        transform: rotate(5deg) scale(1.05);
    }
}

.cookie-consent.show .bi-cookie {
    animation: cookie-bounce 0.6s ease-in-out;
}

/* Responsive cookie consent */
@media (max-width: 992px) {
    .cookie-consent-content {
        flex-direction: column;
        align-items: stretch;
        gap: 1.5rem;
    }

    .cookie-consent-text h5 {
        font-size: 1rem;
    }

    .cookie-consent-text p {
        font-size: 0.875rem;
    }

    .cookie-consent-actions {
        flex-direction: column;
        width: 100%;
    }

    .cookie-consent-actions .btn-light,
    .cookie-consent-actions .btn-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .cookie-consent {
        padding: 1rem 0;
    }

    .cookie-consent-content {
        padding: 0 1rem;
        gap: 1rem;
    }

    .cookie-consent-text h5 {
        font-size: 0.95rem;
    }

    .cookie-consent-text p {
        font-size: 0.8rem;
    }

    .cookie-consent-actions .btn-light {
        padding: 0.65rem 1.25rem;
        font-size: 0.9rem;
    }
}

/* Adjust chat widget and footer position when cookie banner is visible */
.cookie-consent.show ~ .chat-toggle {
    bottom: calc(3.5rem + 120px);
}

.cookie-consent.show ~ .chat-panel {
    bottom: calc(2rem + 120px);
}

@media (max-width: 992px) {
    .cookie-consent.show ~ .chat-toggle {
        bottom: calc(1.5rem + 200px);
    }

    .cookie-consent.show ~ .chat-panel {
        bottom: calc(1rem + 200px);
    }
}

/* ===== PAGE BLUR & SCROLL LOCK UNTIL CONSENT ===== */
body.consent-required {
    overflow: hidden;
}

body.consent-required main,
body.consent-required .content,
body.consent-required .navbar,
body.consent-required .footer {
    filter: blur(8px);
    pointer-events: none;
    user-select: none;
}

/* Keep cookie consent banner sharp and interactive */
body.consent-required .cookie-consent {
    filter: none;
    pointer-events: auto;
}

/* ===== HTML5 DETAILS/SUMMARY (NATIVE ACCORDION) ===== */
.browser-instructions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.browser-details {
    border: 1px solid var(--border-default);
    border-radius: 8px;
    background: var(--neutral-0);
    overflow: hidden;
    transition: all 0.2s ease;
}

.browser-details summary {
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    list-style: none;
    user-select: none;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
    position: relative;
}

/* Remove default arrow */
.browser-details summary::-webkit-details-marker {
    display: none;
}

/* Custom arrow */
.browser-details summary::after {
    content: '▼';
    position: absolute;
    right: 1.25rem;
    transition: transform 0.3s ease;
    font-size: 0.75rem;
    color: var(--brand-500);
}

.browser-details[open] summary::after {
    transform: rotate(180deg);
}

.browser-details summary:hover {
    background: var(--neutral-50);
}

.browser-details summary:focus {
    outline: 2px solid var(--brand-400);
    outline-offset: -2px;
}

.details-content {
    padding: 0 1.25rem 1rem 1.25rem;
    font-size: 0.9rem;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.details-content ol {
    margin: 0;
    padding-left: 1.5rem;
}

.details-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.details-content li:last-child {
    margin-bottom: 0;
}

/* ===== HONEYPOT ANTI-SPAM FIELD ===== */
/* Hidden from humans but accessible to bots */
.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
    overflow: hidden;
}

/* ===== INTEREST TABS (NATIVE HTML/CSS) ===== */
.interest-tabs {
    max-width: 800px;
    margin: 0 auto;
}

/* Hide radio buttons */
.interest-tabs input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

/* Tab labels (buttons) */
.tab-labels {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-default);
}

.tab-label {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.tab-label:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* Active tab styling */
#tab-uczen:checked ~ .tab-labels label[for="tab-uczen"],
#tab-mentor:checked ~ .tab-labels label[for="tab-mentor"] {
    color: var(--brand-500);
    border-bottom-color: var(--brand-500);
    background: rgba(59, 130, 246, 0.1);
}

/* Tab panels */
.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

#tab-uczen:checked ~ .tab-content .tab-panel[data-tab="uczen"],
#tab-mentor:checked ~ .tab-content .tab-panel[data-tab="mentor"] {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive tabs */
@media (max-width: 576px) {
    .tab-label {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    .tab-label i {
        display: block;
        margin-bottom: 0.25rem;
        margin-right: 0 !important;
    }
}