/*
 * Flow-Note Page Styles
 * 아카이브 페이지 전용 스타일시트
 * ========================================
 */

/* ========================================
   Flow-Note Hero Section
   ======================================== */
.flownote-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-32) 0 var(--space-20);
    overflow: hidden;
    background: var(--gradient-hero);
}

.flownote-hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: var(--z-base);
}

/* Hero Badge */
.flownote-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(123, 44, 191, 0.15);
    border: 1px solid rgba(123, 44, 191, 0.3);
    border-radius: var(--radius-full);
    padding: var(--space-2) var(--space-5);
    margin-bottom: var(--space-8);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.1s forwards;
}

.badge-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-purple-light);
}

.flownote-hero .hero-badge span:last-child {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--neon-purple-light);
    letter-spacing: 0.02em;
}

/* Flow-Note Title */
.flownote-title {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: var(--font-bold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.flownote-title .title-line {
    display: block;
    opacity: 0;
    animation: titleReveal 1s ease forwards;
}

.flownote-title .title-line:nth-child(1) {
    animation-delay: 0.2s;
}

.flownote-title .title-line:nth-child(2) {
    animation-delay: 0.4s;
}

.flownote-title .gradient-text {
    background: linear-gradient(135deg, var(--neon-purple-light), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 4s ease infinite;
    background-size: 200% 200%;
}

/* Flow-Note Subtitle */
.flownote-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-10);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

/* Ink Drop Animation */
.ink-drops {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.ink-drop {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
    filter: blur(60px);
    animation: inkFloat 12s ease-in-out infinite;
}

.ink-drop-1 {
    width: 200px;
    height: 200px;
    background: var(--neon-purple);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.ink-drop-2 {
    width: 150px;
    height: 150px;
    background: var(--neon-cyan);
    top: 60%;
    right: 15%;
    animation-delay: -3s;
}

.ink-drop-3 {
    width: 180px;
    height: 180px;
    background: var(--neon-magenta);
    bottom: 20%;
    left: 30%;
    animation-delay: -6s;
}

.ink-drop-4 {
    width: 120px;
    height: 120px;
    background: var(--neon-blue-light);
    top: 30%;
    right: 25%;
    animation-delay: -9s;
}

@keyframes inkFloat {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.4;
    }

    25% {
        transform: translate(20px, -20px) scale(1.1);
        opacity: 0.6;
    }

    50% {
        transform: translate(-10px, 10px) scale(0.9);
        opacity: 0.5;
    }

    75% {
        transform: translate(15px, 15px) scale(1.05);
        opacity: 0.55;
    }
}

/* ========================================
   Subscribe CTA (Substack 연결)
   ======================================== */
.subscribe-container {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.subscribe-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
}

.subscribe-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.subscribe-cta .subscribe-btn {
    padding: var(--space-4) var(--space-8);
}

.subscribe-cta .subscribe-btn svg:last-child {
    transition: transform var(--transition-fast);
}

.subscribe-cta .subscribe-btn:hover svg:last-child {
    transform: translateX(4px);
}

.subscribe-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.subscribe-note svg {
    color: var(--neon-cyan);
}

/* Subscribe CTA Bottom */
.subscribe-cta-bottom {
    display: flex;
    justify-content: center;
}

.subscribe-cta-bottom .subscribe-btn {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
}

.subscribe-cta-bottom .subscribe-btn svg:last-child {
    transition: transform var(--transition-fast);
}

.subscribe-cta-bottom .subscribe-btn:hover svg:last-child {
    transform: translateX(4px);
}



/* ========================================
   Hero Stats
   ======================================== */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    margin-top: var(--space-12);
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--neon-cyan);
    line-height: 1.2;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--glass-border);
}

/* ========================================
   Scroll Indicator
   ======================================== */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-muted);
    font-size: var(--text-sm);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(8px);
    }
}

/* ========================================
   Featured Notes Section
   ======================================== */
.featured-notes {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
    position: relative;
}

.featured-notes::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, var(--neon-purple-light), transparent);
}

/* Notes Grid */
.notes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

/* Note Card */
.note-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
}

.note-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.note-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-purple-light), var(--neon-cyan), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.note-card:hover {
    transform: translateY(-8px);
    border-color: var(--glass-border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--glow-purple);
}

.note-card:hover::before {
    opacity: 1;
}

/* Featured Note Card */
.note-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(123, 44, 191, 0.1) 0%, rgba(0, 245, 212, 0.05) 100%);
    border-color: rgba(123, 44, 191, 0.3);
}

.note-card.featured:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--glow-purple);
}

/* Note Meta */
.note-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.note-category {
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--neon-purple-light);
    background: rgba(123, 44, 191, 0.2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.note-date {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* Note Title */
.note-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
    transition: color var(--transition-fast);
}

.note-card:hover .note-title {
    color: var(--neon-cyan);
}

/* Note Excerpt */
.note-excerpt {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Note Footer */
.note-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-4);
    border-top: 1px solid var(--glass-border);
}

.note-tags {
    display: flex;
    gap: var(--space-2);
}

.tag {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.read-more {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--neon-cyan);
    transition: all var(--transition-fast);
}

.note-card:hover .read-more {
    color: var(--neon-purple-light);
}

/* Note Card as Link - 링크 스타일 리셋 */
a.note-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

/* Section CTA */
.section-cta {
    text-align: center;
    margin-top: var(--space-12);
    opacity: 0;
    transform: translateY(20px);
}

.section-cta.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.section-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.section-cta .btn svg {
    transition: transform var(--transition-fast);
}

.section-cta .btn:hover svg {
    transform: translate(3px, -3px);
}

/* ========================================
   Topics Section
   ======================================== */
.topics-section {
    padding: var(--space-20) 0;
    background: var(--bg-primary);
}

.topics-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    opacity: 0;
    transform: translateY(30px);
}

.topics-grid.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

/* Topic Pill */
.topic-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.topic-pill:hover {
    background: var(--glass-bg-hover);
    border-color: var(--neon-purple-light);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.topic-pill.active {
    background: linear-gradient(135deg, rgba(123, 44, 191, 0.3), rgba(0, 245, 212, 0.1));
    border-color: var(--neon-purple-light);
    color: var(--text-primary);
    box-shadow: var(--glow-purple);
}

.topic-icon {
    font-size: var(--text-base);
}

.topic-name {
    font-weight: var(--font-medium);
}

.topic-count {
    font-size: var(--text-xs);
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
}

/* ========================================
   About Flow-Note Section
   ======================================== */
.about-flownote {
    padding: var(--space-16) 0;
    background: var(--bg-secondary);
}

.about-content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-8);
    padding: var(--space-10);
    opacity: 0;
    transform: translateY(30px);
}

.about-content.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.about-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(123, 44, 191, 0.15);
    border: 1px solid rgba(123, 44, 191, 0.3);
    border-radius: var(--radius-xl);
    color: var(--neon-purple-light);
}

.about-text h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.about-text p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.about-text p+p {
    margin-top: var(--space-3);
}

.about-text strong {
    color: var(--neon-purple-light);
}

/* ========================================
   Bottom CTA Section
   ======================================== */
.bottom-cta {
    padding: var(--space-32) 0;
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.bottom-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-purple-light), transparent);
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(30px);
}

.cta-content.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

.cta-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: rgba(123, 44, 191, 0.15);
    border: 1px solid rgba(123, 44, 191, 0.3);
    border-radius: 50%;
    color: var(--neon-purple-light);
    margin-bottom: var(--space-8);
    animation: pulse-glow 3s ease-in-out infinite;
}

.cta-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    line-height: var(--leading-tight);
}

.cta-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-10);
    line-height: var(--leading-relaxed);
}

/* Large Subscribe Form */
.subscribe-form-lg {
    max-width: 550px;
    margin: 0 auto;
}

.subscribe-form-lg .input-wrapper input {
    padding: var(--space-5) var(--space-5) var(--space-5) var(--space-12);
    font-size: var(--text-lg);
}

.subscribe-form-lg .subscribe-btn {
    padding: var(--space-5) var(--space-8);
    font-size: var(--text-lg);
}

/* ========================================
   Active Navigation State
   ======================================== */
.nav-links a.active {
    color: var(--neon-cyan);
}

.nav-links a.active::after {
    width: 100%;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .notes-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .note-card.featured {
        grid-column: span 2;
    }

    .flownote-title {
        font-size: var(--text-5xl);
    }
}

@media (max-width: 768px) {
    .flownote-hero {
        padding: var(--space-24) 0 var(--space-16);
    }

    .flownote-title {
        font-size: var(--text-4xl);
    }

    .flownote-subtitle {
        font-size: var(--text-lg);
    }

    .subscribe-form .form-group {
        flex-direction: column;
    }

    .subscribe-btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    .notes-grid {
        grid-template-columns: 1fr;
    }

    .note-card.featured {
        grid-column: span 1;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .cta-title {
        font-size: var(--text-3xl);
    }

    .subscribe-form-lg .form-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .flownote-title {
        font-size: var(--text-3xl);
    }

    .topics-grid {
        gap: var(--space-2);
    }

    .topic-pill {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-xs);
    }
}