/* Shared UI primitives used across pages. */

/* Beta Banner */
.beta-banner {
    position: sticky;
    top: 0;
    z-index: 1003;
    background: #2a0d0d;
    border-bottom: 1px solid rgba(239, 68, 68, 0.25);
    color: #e2e8f0;
}

.is-prod .beta-banner {
    display: none;
}

html.is-prod,
body.is-prod {
    --sticky-top: 20px;
}

.beta-banner__content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: center;
    font-size: 0.9em;
}

.beta-banner__tag {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
    font-size: 0.72em;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(239, 68, 68, 0.18);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #fee2e2;
}

.beta-banner__text {
    color: #cbd5e1;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-primary);
    color: white;
    padding: 12px 24px;
    border-radius: 0 0 8px 8px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:not(:focus) {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    width: 1px;
    overflow: hidden;
    white-space: nowrap;
}

.skip-link:focus {
    top: 0;
}

/* Navigation */
.nav {
    position: fixed;
    top: calc(var(--sticky-top) + env(safe-area-inset-top));
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    isolation: isolate;
    background: rgba(239, 68, 68, 0.12);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: 50px;
    height: var(--sticky-height);
    align-items: center;
    gap: var(--nav-gap, 4px);
    box-shadow: var(--card-shadow);
    display: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
    width: min(100%, var(--nav-max-width, 920px));
    max-width: calc(100vw - 32px);
}

.nav-scroller {
    display: flex;
    align-items: center;
    justify-content: var(--nav-justify, flex-start);
    gap: var(--nav-gap, 4px);
    height: 100%;
    flex: 1 1 auto;
    min-width: 0;
    padding: var(--nav-padding, 0 16px);
    overflow-x: auto;
    scrollbar-width: none;
    white-space: nowrap;
    scroll-snap-type: x proximity;
    scroll-padding: 0 24px;
    -webkit-overflow-scrolling: touch;
}

.nav-scroller::-webkit-scrollbar {
    display: none;
}

.nav-scroller a {
    scroll-snap-align: center;
}

.nav:not(.nav--fade-left):not(.nav--fade-right) .nav-scroller {
    justify-content: center;
}

.nav.nav--fade-left .nav-scroller {
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 24px, #000 100%);
    mask-image: linear-gradient(90deg, transparent 0, #000 24px, #000 100%);
}

.nav.nav--fade-right .nav-scroller {
    -webkit-mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

.nav.nav--fade-left.nav--fade-right .nav-scroller {
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 24px, #000 calc(100% - 24px), transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0, #000 24px, #000 calc(100% - 24px), transparent 100%);
}

.nav.nav--fade-left .nav-scroller,
.nav.nav--fade-right .nav-scroller,
.nav.nav--fade-left.nav--fade-right .nav-scroller {
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
}

.beta-banner ~ .nav {
    top: calc(var(--sticky-top) + env(safe-area-inset-top));
}

.nav.visible { display: flex; opacity: 1; visibility: visible; }

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--nav-link-padding, 8px 12px);
    border-radius: 25px;
    font-size: 0.85em;
    font-weight: 500;
    transition: color var(--transition-speed), background var(--transition-speed);
    white-space: nowrap;
}

.nav a:hover, .nav a.active {
    color: var(--accent-primary);
    background: var(--accent-light);
}

.nav-cmd {
    border: none;
    font: inherit;
    line-height: 1;
    margin-left: 8px;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-family: 'Fira Code', monospace;
    font-size: 0.75em;
    color: var(--text-muted);
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed);
}

.nav-cmd:hover {
    background: var(--accent-light);
    color: var(--accent-primary);
}

/* Header + Hero */
header {
    min-height: 82vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--header-bg);
    perspective: 900px;
    transform-style: preserve-3d;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(239, 68, 68, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(251, 113, 133, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(244, 63, 94, 0.03) 0%, transparent 60%);
    animation: heroAmbient 25s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroAmbient {
    0%, 100% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
    25% { transform: translate(2%, 1%) rotate(1deg); opacity: 0.8; }
    50% { transform: translate(-1%, 2%) rotate(-1deg); opacity: 1; }
    75% { transform: translate(-2%, -1%) rotate(0.5deg); opacity: 0.9; }
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    will-change: transform;
}

.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 65%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 65%);
    opacity: 0.7;
}

@keyframes gridFloat {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
    padding: 40px 20px;
    max-width: 900px;
    will-change: transform;
    animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3em;
    margin: 0 auto 25px;
    border: 4px solid rgba(255,255,255,0.2);
    animation: fadeInDown 0.8s ease-out, avatarGlow 4s ease-in-out infinite 0.8s;
    box-shadow: 0 0 40px rgba(239,68,68,0.3), 0 0 80px rgba(239,68,68,0.15);
    position: relative;
}

.hero-avatar::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, rgba(239,68,68,0.4), rgba(251,113,133,0.4), rgba(244,63,94,0.4), rgba(239,68,68,0.4));
    animation: avatarRingRotate 8s linear infinite;
    opacity: 0.6;
    z-index: -1;
    filter: blur(4px);
}

@keyframes avatarGlow {
    0%, 100% { box-shadow: 0 0 40px rgba(239,68,68,0.3), 0 0 80px rgba(239,68,68,0.15); }
    50% { box-shadow: 0 0 60px rgba(239,68,68,0.45), 0 0 100px rgba(239,68,68,0.25); }
}

@keyframes avatarRingRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(16,185,129,0.2);
    border: 1px solid rgba(16,185,129,0.3);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.9em;
    margin-bottom: 25px;
    animation: fadeInDown 0.8s ease-out 0.1s both;
    backdrop-filter: blur(8px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(16,185,129,0.6);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 10px rgba(16,185,129,0.6); transform: scale(1); }
    50% { opacity: 1; box-shadow: 0 0 20px rgba(16,185,129,0.8), 0 0 30px rgba(16,185,129,0.4); transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #ffffff, #ef4444, #fb7185, #ffffff, #ef4444);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.2s both, titleShimmer 8s ease-in-out infinite 1s;
    text-shadow: 0 0 40px rgba(239,68,68,0.3), 0 0 20px rgba(239,68,68,0.2);
}

@keyframes titleShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: #94a3b8;
    margin-bottom: 12px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    header::before,
    .grid-pattern,
    .hero-content,
    .hero-avatar,
    .hero-avatar::before,
    .hero-title {
        animation: none !important;
    }
    .hero-badge .dot {
        animation: none !important;
        box-shadow: 0 0 10px rgba(16,185,129,0.6);
    }
}

/* Mobile Menu */
.mobile-menu-btn {
    display: flex;
    position: fixed;
    top: calc(var(--sticky-top) + env(safe-area-inset-top));
    left: var(--sticky-left);
    z-index: 1004;
    background: rgba(239, 68, 68, 0.12);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: 10px;
    width: var(--sticky-height);
    height: var(--sticky-height);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: var(--card-shadow);
}

[data-theme="light"] .mobile-menu-btn {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(148, 163, 184, 0.35);
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--mobile-nav-bg, rgba(239, 68, 68, 0.12));
    backdrop-filter: blur(20px);
    z-index: 1000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    --mobile-nav-text: #f8fafc;
}

.mobile-nav.active { display: flex; opacity: 1; visibility: visible; }

.mobile-nav a {
    color: var(--mobile-nav-text);
    text-decoration: none;
    font-size: 1.5em;
    font-weight: 600;
    padding: 10px 30px;
    border-radius: 10px;
    transition: background 0.3s, color 0.3s;
}

.mobile-nav a:hover { background: var(--accent-light); color: var(--accent-primary); }

.mobile-nav .is-current {
    opacity: 0.6;
    pointer-events: none;
}

[data-theme="light"] .mobile-nav {
    background: rgba(255, 255, 255, 0.92);
    --mobile-nav-text: #1e293b;
}

@media (max-width: 768px) {
    .nav {
        left: calc(var(--sticky-left) + var(--sticky-height) + var(--sticky-gap));
        right: 16px;
        transform: none;
        justify-content: flex-start;
        padding: 0 16px;
        width: auto;
    }
}

/* Page Transitions */
body.page-fade {
    opacity: 0;
    transition: opacity 0.35s ease;
}

body.page-fade.is-loaded {
    opacity: 1;
}

body.page-fade.is-leaving {
    opacity: 0;
}