/* ===== Viral Slides Design System ===== */
/* Optimized for: Livestream + Short Video Clips */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&family=Oswald:wght@500;600;700&family=Orbitron:wght@600;700;800&display=swap');

:root {
    /* Core Colors */
    --bg-deep: #0a0a12;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-solid: #12121f;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(139, 92, 246, 0.5);

    /* Accent Gradients */
    --gradient-fire: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    --gradient-purple: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
    --gradient-neon: linear-gradient(135deg, #00FF88 0%, #00D4FF 100%);
    --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FF8C00 100%);

    /* Text */
    --text-white: #FFFFFF;
    --text-muted: #94A3B8;
    --text-dim: #64748B;

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-blur: blur(20px);

    /* Typography Scale (Viral-Optimized - Compact) */
    --font-hero: 3rem;
    /* Reduced from 4.5rem for screen fit */
    --font-title: 2rem;
    /* Reduced from 3rem */
    --font-subtitle: 1.25rem;
    /* Reduced from 1.75rem */
    --font-body: 1rem;
    /* Reduced from 1.25rem */
    --font-small: 0.875rem;

    /* Spacing / Coordination (Compact) */
    --gap-header: 28px;
    /* Gap between title and content */
    --gap-title: 10px;
    /* Gap between hero and subtitle */
    --container-max-width: 85vw;
}

/* ===== Global Reset for Slides ===== */
html,
body {
    background: var(--bg-deep) !important;
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif !important;
    color: var(--text-white);
    overflow: hidden;
}

/* ===== Swiper Base ===== */
.swiper {
    background: var(--bg-deep) !important;
}

.swiper-slide {
    background: transparent !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    padding: 24px !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
}

/* ===== Structural Coordination Classes ===== */
.viral-container {
    width: 100% !important;
    max-width: 850px;
    /* Removed !important to allow inline style overrides */
    margin: 0 auto !important;
    position: relative !important;
    z-index: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
}

.viral-header {
    margin-bottom: 24px !important;
    /* Unified consistent spacing */
    width: 100% !important;
}

.viral-header .viral-hero {
    margin-bottom: var(--gap-title) !important;
}

.viral-content {
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 20px !important;
}

/* ===== Global Background Animation ===== */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(139, 92, 246, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 50% 30% at 0% 80%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
    z-index: -2;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

/* ===== Typography Utilities ===== */
.viral-hero {
    font-size: var(--font-hero) !important;
    font-weight: 900 !important;
    line-height: 1.1 !important;
    letter-spacing: -0.03em !important;
    color: var(--text-white) !important;
    text-shadow: 0 0 80px rgba(139, 92, 246, 0.3);
}

.viral-title {
    font-size: var(--font-title) !important;
    font-weight: 800 !important;
    line-height: 1.2 !important;
    letter-spacing: -0.02em !important;
    color: var(--text-white) !important;
    white-space: normal !important;
    /* Allow wrapping to prevent cutoff */
    word-break: break-word !important;
    /* Break long words if necessary */
}

.viral-subtitle {
    font-size: var(--font-subtitle) !important;
    font-weight: 500 !important;
    line-height: 1.4 !important;
    color: var(--text-muted) !important;
    margin: 0 !important;
}

.viral-body {
    font-size: var(--font-body) !important;
    font-weight: 400 !important;
    line-height: 1.6 !important;
    color: var(--text-muted) !important;
}

/* ===== Gradient Text ===== */
.text-gradient-fire {
    background: var(--gradient-fire) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.text-gradient-purple {
    background: var(--gradient-purple) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.text-gradient-neon {
    background: var(--gradient-neon) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

/* ===== VIRAL Card Styles ===== */
.viral-card {
    background: var(--bg-card-solid) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 16px !important;
    padding: 20px !important;
    position: relative !important;
    overflow: hidden !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.viral-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 24px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(236, 72, 153, 0.1), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.viral-card:hover {
    transform: translateY(-8px) scale(1.02) !important;
    border-color: var(--border-glow) !important;
    box-shadow:
        0 25px 50px -12px rgba(139, 92, 246, 0.25),
        0 0 0 1px rgba(139, 92, 246, 0.1) !important;
}

/* Featured Card (Hero Card) */
.viral-card-featured {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.1)) !important;
    border: 2px solid rgba(245, 158, 11, 0.4) !important;
}

.viral-card-featured::before {
    background: var(--gradient-fire);
    opacity: 0.3;
}

/* ===== Giant Number (Visual Anchor) ===== */
.viral-number {
    font-family: 'Oswald', sans-serif !important;
    font-size: 8rem !important;
    font-weight: 700 !important;
    line-height: 1 !important;
    background: var(--gradient-purple) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    opacity: 0.1;
    position: absolute;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: -1;
    pointer-events: none;
    white-space: nowrap;
}

/* ===== Giant Price ===== */
.viral-price {
    font-family: 'Oswald', sans-serif !important;
    font-size: 3.5rem !important;
    font-weight: 700 !important;
    line-height: 1 !important;
    color: var(--text-white) !important;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
}

.viral-price-small {
    font-size: 1.25rem !important;
    vertical-align: super;
    margin-right: 4px;
}

/* ===== Icon Styles ===== */
.viral-icon {
    font-size: 2.5rem !important;
    display: inline-block;
    filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.5));
    margin-bottom: 10px;
}

.viral-icon-large {
    font-size: 3.5rem !important;
    filter: drop-shadow(0 0 30px rgba(139, 92, 246, 0.6));
}

/* ===== Badge / Tag Styles ===== */
.viral-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--gradient-fire) !important;
    color: white !important;
    padding: 8px 18px !important;
    border-radius: 50px !important;
    font-size: 0.9rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {

    0%,
    100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 30px rgba(245, 158, 11, 0.6);
    }
}

.viral-badge-outline {
    background: transparent !important;
    border: 2px solid rgba(139, 92, 246, 0.5) !important;
    color: var(--text-white) !important;
    box-shadow: none;
    animation: none;
}

/* ===== CTA Button ===== */
.viral-cta {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--gradient-fire) !important;
    color: white !important;
    padding: 20px 40px !important;
    border-radius: 16px !important;
    font-size: 1.1rem !important;
    font-weight: 700 !important;
    border: none !important;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 20px 40px -10px rgba(239, 68, 68, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.viral-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: cta-shine 3s infinite;
}

@keyframes cta-shine {
    0% {
        left: -100%;
    }

    50%,
    100% {
        left: 100%;
    }
}

.viral-cta:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow:
        0 30px 60px -15px rgba(239, 68, 68, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Secondary CTA */
.viral-cta-secondary {
    background: var(--bg-card-solid) !important;
    border: 2px solid var(--border-subtle) !important;
    box-shadow: none;
}

.viral-cta-secondary:hover {
    border-color: var(--border-glow) !important;
    box-shadow: 0 20px 40px -10px rgba(139, 92, 246, 0.3);
}

/* ===== List Styles ===== */
.viral-list {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

.viral-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: var(--font-body);
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
}

.viral-list li:last-child {
    border-bottom: none;
}

.viral-list li::before {
    content: '→';
    color: #8B5CF6;
    font-weight: bold;
    font-size: 1rem;
}

/* Check/Cross Icons */
.viral-check {
    color: #00FF88 !important;
    font-size: 1.5rem !important;
}

.viral-cross {
    color: #EF4444 !important;
    opacity: 0.5;
    font-size: 1.5rem !important;
}

/* ===== Layout Grids ===== */
.viral-grid-2 {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
}

.viral-grid-3 {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 16px !important;
}

.viral-grid-4 {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 14px !important;
}

/* ===== Timeline ===== */
.viral-timeline {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 0;
}

.viral-timeline-item {
    flex: 1;
    max-width: 260px;
    padding: 40px 20px;
    /* Increased vertical padding to fill space */
    background: var(--bg-card-solid);
    border: 1px solid var(--border-subtle);
    text-align: center;
    position: relative;
}

.viral-timeline-item:first-child {
    border-radius: 20px 0 0 20px;
}

.viral-timeline-item:last-child {
    border-radius: 0 20px 20px 0;
}

.viral-timeline-item.active {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(139, 92, 246, 0.1));
    border: 2px solid rgba(245, 158, 11, 0.5);
    border-radius: 20px;
    transform: scale(1.08);
    z-index: 2;
    box-shadow: 0 20px 40px -10px rgba(245, 158, 11, 0.3);
}

.viral-timeline-item.past {
    opacity: 0.4;
}

.viral-timeline-item.future {
    opacity: 0.4;
    border-style: dashed;
}

/* ===== Watermark / Branding ===== */
.viral-watermark {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--text-dim);
    opacity: 0.6;
    z-index: 9999;
}

.viral-watermark::before {
    content: '🚀';
    font-size: 1.25rem;
}

/* Corner Badge */
.viral-corner-badge {
    position: fixed;
    top: 24px;
    right: 24px;
    background: var(--gradient-fire);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.125rem;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
    animation: corner-pulse 2s infinite;
}

@keyframes corner-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

/* ===== Swiper Pagination ===== */
.swiper-pagination {
    bottom: 24px !important;
}

.swiper-pagination-bullet {
    width: 12px !important;
    height: 12px !important;
    background: var(--text-dim) !important;
    opacity: 0.3 !important;
    transition: all 0.3s ease !important;
}

.swiper-pagination-bullet-active {
    background: var(--gradient-purple) !important;
    opacity: 1 !important;
    width: 32px !important;
    border-radius: 6px !important;
}

/* ===== Persistent Legend Footer ===== */
.viral-footer-legend {
    font-size: 2.2rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 900;
    letter-spacing: 0.05em;
    text-shadow: 0 0 40px rgba(245, 158, 11, 0.8);
    font-family: 'Noto Sans SC', sans-serif;
    text-align: center;
    width: 100%;
    margin-top: 40px;
}

/* ===== Urgency Banner ===== */
.viral-urgency {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(239, 68, 68, 0.15);
    border: 2px solid rgba(239, 68, 68, 0.5);
    border-radius: 40px;
    padding: 12px 28px;
    animation: urgency-pulse 1.5s infinite;
}

@keyframes urgency-pulse {

    0%,
    100% {
        transform: scale(1);
        border-color: rgba(239, 68, 68, 0.5);
    }

    50% {
        transform: scale(1.02);
        border-color: rgba(239, 68, 68, 0.8);
    }
}

.viral-urgency-icon {
    font-size: 1.5rem;
    animation: urgency-shake 0.5s infinite;
}

@keyframes urgency-shake {

    0%,
    100% {
        transform: rotate(-5deg);
    }

    50% {
        transform: rotate(5deg);
    }
}

.viral-urgency-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: #EF4444;
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 1200px) {
    :root {
        --font-hero: 2.5rem;
        --font-title: 1.75rem;
        --font-subtitle: 1.1rem;
        --font-body: 0.9rem;
    }

    .viral-number {
        font-size: 6rem !important;
    }

    .viral-price {
        font-size: 2.5rem !important;
    }
}

@media (max-width: 768px) {

    .viral-grid-3,
    .viral-grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .viral-timeline {
        flex-direction: column;
    }

    .viral-timeline-item {
        border-radius: 16px !important;
    }
}

/* ===== Typewriter Animation ===== */
.viral-typewriter {
    display: inline-block;
    vertical-align: bottom;
    overflow: hidden;
    border-right: 0.15em solid var(--text-white);
    white-space: nowrap;
    margin: 0;
    letter-spacing: 0.05em;
    width: 0;
    /* Start at 0 */
    animation:
        typing 1.5s steps(8, end) forwards,
        blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0
    }

    to {
        width: 3.4em;
    }

    /* Approx width for "AI编程" */
}

@keyframes blink-caret {

    from,
    to {
        border-color: transparent
    }

    50% {
        border-color: var(--text-white);
    }
}

/* ===== Danmu (Floating Comments) Animation ===== */
.viral-danmu-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
    /* Behind main content */
}

.viral-danmu-item {
    position: absolute;
    white-space: nowrap;
    color: #F59E0B;
    /* Match the 'fire' theme orange */
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    /* Add subtle shadow for depth */
    left: 100%;
    animation: danmu-drift linear infinite;
}

@keyframes danmu-drift {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-150vw);
    }
}