@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@400;500;600;700&display=swap');

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

:root {
    --bg-cream: #fef9f3;
    --bg-pink: #fff5f8;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.6);
    --border: rgba(255, 182, 193, 0.3);
    --border-light: rgba(255, 182, 193, 0.5);
    --text-dark: #5c4d5c;
    --text-secondary: #8b7b8b;
    --text-muted: #b8a8b8;
    
    --pink-soft: #ffb6c1;
    --pink-coral: #ff8fa3;
    --pink-hot: #ff6b8a;
    --pink-deep: #ff4d6d;
    --lavender: #e0c3fc;
    --purple-soft: #c9a0dc;
    --mint: #98d8c8;
    --peach: #ffd6a5;
    --cream: #fff1e6;
    --yellow-soft: #fff3b0;
    
    --gradient-candy: linear-gradient(135deg, #ffb6c1, #ff8fa3, #e0c3fc);
    --gradient-pink: linear-gradient(135deg, #ff6b8a, #ff8fa3);
    --gradient-lavender: linear-gradient(135deg, #e0c3fc, #c9a0dc);
    --gradient-peach: linear-gradient(135deg, #ffd6a5, #ffb6c1);
    
    --shadow-soft: 0 8px 30px rgba(255, 107, 138, 0.12);
    --shadow-hover: 0 12px 40px rgba(255, 107, 138, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-cream);
    color: var(--text-dark);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.7;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255, 182, 193, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(224, 195, 252, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 50% 50%, rgba(255, 214, 165, 0.1) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}

canvas#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.cursor-dot {
    width: 12px;
    height: 12px;
    background: var(--pink-hot);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px var(--pink-coral);
    transition: transform 0.1s;
}

.cursor-ring {
    width: 40px;
    height: 40px;
    border: 2px solid var(--pink-coral);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: all 0.15s ease-out;
}

.cursor-ring.hover {
    width: 55px;
    height: 55px;
    border-color: var(--pink-hot);
    background: rgba(255, 107, 138, 0.1);
}

.cursor-ring.click {
    width: 30px;
    height: 30px;
    background: rgba(255, 107, 138, 0.2);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid rgba(255, 182, 193, 0.2);
    box-shadow: 0 4px 20px rgba(255, 107, 138, 0.08);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    position: relative;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon span {
    font-size: 2rem;
    animation: wiggle 2s ease-in-out infinite;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--pink-hot);
    letter-spacing: -0.5px;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    position: relative;
    background: var(--bg-glass);
    border: 2px solid transparent;
    padding: 0.6rem 1.25rem;
    cursor: pointer;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: 50px;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn:hover {
    color: var(--pink-hot);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-soft);
}

.nav-btn.active {
    background: var(--gradient-pink);
    color: white;
    border-color: transparent;
    box-shadow: 0 6px 25px rgba(255, 107, 138, 0.35);
}

.nav-btn span:first-child {
    font-size: 1.1rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.streak-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, #fff1e6, #ffd6a5);
    border: 2px solid rgba(255, 214, 165, 0.5);
    border-radius: 50px;
    font-size: 0.85rem;
}

.streak-icon {
    font-size: 1.1rem;
}

.streak-count {
    font-weight: 700;
    color: var(--pink-hot);
}

.xp-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, #fff5f8, #ffe6eb);
    border: 2px solid rgba(255, 182, 193, 0.4);
    border-radius: 50px;
    font-size: 0.85rem;
}

.xp-icon {
    font-size: 1.1rem;
}

.xp-text {
    font-weight: 700;
    color: var(--pink-hot);
}

.main {
    position: relative;
    z-index: 1;
    padding: 110px 2rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.page {
    display: none;
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.page.active {
    display: block;
}

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(0.9) translateY(30px); }
    60% { transform: scale(1.02) translateY(-5px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
    align-items: center;
}

.time-greeting {
    font-size: 0.9rem;
    color: var(--pink-coral);
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
    font-weight: 600;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.title-line {
    display: block;
}

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

.typewriter {
    font-size: 1.1rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    border-left: 3px solid var(--pink-coral);
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stats-cute {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stats-center {
    position: relative;
    width: 180px;
    height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    box-shadow: var(--shadow-soft);
    border: 4px solid rgba(255, 182, 193, 0.3);
}

.stats-icon {
    font-size: 4rem;
    animation: bounce 1.5s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-stats {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-stat {
    position: absolute;
    background: white;
    border-radius: 20px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-soft);
    border: 2px solid rgba(255, 182, 193, 0.2);
    animation: float 3s ease-in-out infinite;
}

.floating-stat:nth-child(1) { top: -10%; left: 10%; animation-delay: 0s; }
.floating-stat:nth-child(2) { top: -5%; right: 5%; animation-delay: 0.5s; }
.floating-stat:nth-child(3) { bottom: 5%; left: 0; animation-delay: 1s; }

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

.floating-stat .stat-num {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-candy);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.floating-stat .stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
}

.level-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.level-card {
    position: relative;
    padding: 1.75rem;
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    overflow: hidden;
}

.level-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    border-radius: 30px 30px 0 0;
}

.level-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-hover);
}

.level-card.level-1::before { background: var(--mint); }
.level-card.level-2::before { background: var(--pink-coral); }
.level-card.level-3::before { background: var(--lavender); }
.level-card.level-4::before { background: var(--peach); }

.level-card.level-1:hover { border-color: var(--mint); }
.level-card.level-2:hover { border-color: var(--pink-coral); }
.level-card.level-3:hover { border-color: var(--lavender); }
.level-card.level-4:hover { border-color: var(--peach); }

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.level-badge {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
}

.level-1 .level-badge { background: rgba(152, 216, 200, 0.3); color: #2d8a6e; }
.level-2 .level-badge { background: rgba(255, 143, 163, 0.3); color: #c44569; }
.level-3 .level-badge { background: rgba(224, 195, 252, 0.3); color: #8b5cf6; }
.level-4 .level-badge { background: rgba(255, 214, 165, 0.3); color: #d97706; }

.level-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
}

.card-skills {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 500;
}

.card-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.progress-track {
    flex: 1;
    height: 8px;
    background: rgba(255, 182, 193, 0.2);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    border-radius: 10px;
    transition: width 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.level-1 .progress-fill { background: linear-gradient(90deg, var(--mint), #7dd3c0); }
.level-2 .progress-fill { background: linear-gradient(90deg, var(--pink-coral), var(--pink-hot)); }
.level-3 .progress-fill { background: linear-gradient(90deg, var(--lavender), var(--purple-soft)); }
.level-4 .progress-fill { background: linear-gradient(90deg, var(--peach), var(--yellow-soft)); }

.progress-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 700;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.section-icon {
    font-size: 1.8rem;
}

.section-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
}

.quick-section {
    margin-bottom: 3rem;
}

.quick-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 1.25rem;
}

.quick-card {
    position: relative;
    padding: 2rem;
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    overflow: hidden;
}

.quick-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: var(--gradient-pink);
    border-radius: 50%;
    opacity: 0.1;
    transition: all 0.4s;
}

.quick-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: var(--pink-coral);
}

.quick-card:hover::before {
    transform: scale(2);
    opacity: 0.15;
}

.quick-card.large {
    grid-row: span 2;
}

.quick-card .card-emoji {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    display: block;
    animation: wiggle 3s ease-in-out infinite;
}

.quick-card.large .card-emoji {
    font-size: 5rem;
}

.quick-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--text-dark);
}

.quick-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.card-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    padding: 0.35rem 0.85rem;
    background: var(--bg-pink);
    border: 2px solid var(--pink-soft);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pink-hot);
}

.tag.hot {
    background: var(--peach);
    border-color: var(--peach);
}

.recent-section {
    margin-bottom: 3rem;
}

.timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--pink-coral), var(--lavender), var(--peach));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.75rem;
    background: white;
    border: 2px solid rgba(255, 182, 193, 0.2);
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    margin-left: 2.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    background: white;
    border: 4px solid var(--pink-coral);
    border-radius: 50%;
    transition: all 0.35s;
}

.timeline-item:hover {
    transform: translateX(10px);
    border-color: var(--pink-coral);
    box-shadow: var(--shadow-soft);
}

.timeline-item:hover::before {
    background: var(--pink-coral);
    box-shadow: 0 0 20px var(--pink-coral);
}

.timeline-level {
    width: 55px;
    height: 55px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.timeline-level.L1 { background: rgba(152, 216, 200, 0.25); color: #2d8a6e; }
.timeline-level.L2 { background: rgba(255, 143, 163, 0.25); color: #c44569; }
.timeline-level.L3 { background: rgba(224, 195, 252, 0.25); color: #8b5cf6; }
.timeline-level.L4 { background: rgba(255, 214, 165, 0.25); color: #d97706; }

.timeline-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    color: var(--text-dark);
}

.timeline-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.timeline-arrow {
    font-size: 1.5rem;
    color: var(--pink-coral);
    transition: transform 0.3s;
}

.timeline-item:hover .timeline-arrow {
    transform: translateX(8px);
}

.timeline-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    background: white;
    border: 3px dashed rgba(255, 182, 193, 0.3);
    border-radius: 30px;
    text-align: center;
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: bounce 2s ease-in-out infinite;
}

.empty-icon ~ p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
}

.tree-container {
    display: grid;
    grid-template-columns: 280px 1fr 400px;
    gap: 1.5rem;
    min-height: calc(100vh - 150px);
}

.tree-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.sidebar-card {
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    padding: 1.75rem;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(255, 182, 193, 0.15);
}

.sidebar-icon {
    font-size: 1.5rem;
}

.sidebar-header span:last-child {
    font-weight: 700;
    color: var(--text-dark);
}

.level-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.15rem;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 18px;
    cursor: pointer;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    width: 100%;
}

.nav-item:hover {
    background: var(--bg-pink);
    color: var(--pink-hot);
    transform: translateX(5px);
}

.nav-item.active {
    background: var(--gradient-pink);
    color: white;
}

.nav-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    transition: all 0.35s;
}

.nav-dot.L1 { background: var(--mint); }
.nav-dot.L2 { background: var(--pink-coral); }
.nav-dot.L3 { background: var(--lavender); }
.nav-dot.L4 { background: var(--peach); }

.nav-item:hover .nav-dot,
.nav-item.active .nav-dot {
    transform: scale(1.4);
    box-shadow: 0 0 15px currentColor;
}

.nav-count {
    margin-left: auto;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: rgba(255, 182, 193, 0.15);
    border-radius: 50px;
    color: var(--text-muted);
}

.progress-cute {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 1rem;
}

.progress-circle {
    width: 120px;
    height: 120px;
    position: relative;
}

.progress-circle svg {
    transform: rotate(-90deg);
}

.progress-bg {
    fill: none;
    stroke: rgba(255, 182, 193, 0.2);
    stroke-width: 10;
}

.progress-fg {
    fill: none;
    stroke: url(#cuteGradient);
    stroke-width: 10;
    stroke-linecap: round;
    stroke-dasharray: 339.292;
    stroke-dashoffset: 339.292;
    transition: stroke-dashoffset 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.progress-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-value {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient-candy);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tree-main {
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    padding: 2rem;
    overflow-x: auto;
}

.tree-content {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    min-width: 750px;
}

.level-header-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px dashed rgba(255, 182, 193, 0.2);
}

.level-icon {
    width: 70px;
    height: 70px;
    border-radius: 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: white;
}

.level-icon.L1 { background: var(--mint); }
.level-icon.L2 { background: var(--pink-coral); }
.level-icon.L3 { background: var(--lavender); }
.level-icon.L4 { background: var(--peach); }

.level-info h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.level-info span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.skills-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-node {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1.25rem;
    background: var(--bg-pink);
    border: 3px solid rgba(255, 182, 193, 0.25);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    min-width: 155px;
}

.skill-node:hover {
    transform: translateY(-8px) scale(1.05);
    border-color: var(--pink-coral);
    box-shadow: var(--shadow-hover);
}

.skill-node.completed {
    background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
    border-color: var(--mint);
}

.skill-node.selected {
    background: var(--bg-pink);
    border-color: var(--pink-hot);
    box-shadow: 0 8px 30px rgba(255, 107, 138, 0.3);
}

.skill-icon {
    font-size: 2.5rem;
}

.skill-name {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-dark);
}

.skill-check {
    font-size: 0.75rem;
    color: var(--pink-hot);
    font-weight: 700;
}

.tree-detail {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.detail-card {
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    padding: 1.75rem;
    min-height: 450px;
}

.detail-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 380px;
    text-align: center;
}

.placeholder-visual {
    font-size: 6rem;
    margin-bottom: 1.5rem;
    animation: wiggle 2.5s ease-in-out infinite;
}

.placeholder-visual p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.detail-content {
    display: none;
}

.detail-content.active {
    display: block;
    animation: bounceIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(255, 182, 193, 0.15);
}

.detail-icon {
    width: 60px;
    height: 60px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    background: var(--bg-pink);
}

.detail-title h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.detail-tag {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.detail-tag.L1 { background: rgba(152, 216, 200, 0.25); color: #2d8a6e; }
.detail-tag.L2 { background: rgba(255, 143, 163, 0.25); color: #c44569; }
.detail-tag.L3 { background: rgba(224, 195, 252, 0.25); color: #8b5cf6; }
.detail-tag.L4 { background: rgba(255, 214, 165, 0.25); color: #d97706; }

.detail-section {
    margin-bottom: 1.5rem;
}

.detail-section h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.resource-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.resource-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1.15rem;
    background: var(--bg-pink);
    border: 2px solid rgba(255, 182, 193, 0.2);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.resource-item:hover {
    transform: translateX(8px);
    border-color: var(--pink-coral);
    box-shadow: var(--shadow-soft);
}

.task-box {
    padding: 1.15rem;
    background: linear-gradient(135deg, #fff5f8, #ffe6eb);
    border: 2px solid rgba(255, 182, 193, 0.3);
    border-radius: 22px;
}

.task-box p {
    font-size: 0.95rem;
    line-height: 1.65;
}

.master-btn {
    width: 100%;
    padding: 1.1rem;
    border: 3px solid var(--pink-hot);
    background: white;
    color: var(--pink-hot);
    font-family: 'Quicksand', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.master-btn:hover {
    background: var(--gradient-pink);
    color: white;
    transform: scale(1.03);
    box-shadow: 0 8px 30px rgba(255, 107, 138, 0.35);
}

.master-btn.completed {
    background: var(--mint);
    border-color: var(--mint);
    color: white;
}

.gallery-header,
.tools-header {
    text-align: center;
    padding: 3rem 0;
}

.header-icon-cute {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

.gallery-header h1,
.tools-header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--gradient-candy);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gallery-header p,
.tools-header p {
    color: var(--text-secondary);
    font-size: 1.15rem;
}

.gallery-filters,
.tools-filters {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.25rem;
    background: white;
    border: 2px solid rgba(255, 182, 193, 0.3);
    border-radius: 50px;
    cursor: pointer;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.filter-chip:hover {
    transform: translateY(-3px);
    border-color: var(--pink-coral);
}

.filter-chip.active {
    background: var(--gradient-pink);
    border-color: transparent;
    color: white;
    box-shadow: 0 6px 25px rgba(255, 107, 138, 0.3);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}

.gallery-card {
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.gallery-card:hover {
    transform: translateY(-10px);
    border-color: var(--pink-coral);
    box-shadow: var(--shadow-hover);
}

.gallery-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.compare-cell {
    padding: 1.25rem;
    text-align: center;
}

.compare-cell.wrong {
    background: rgba(255, 230, 230, 0.5);
}

.compare-cell.right {
    background: rgba(230, 255, 240, 0.5);
}

.compare-label {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.compare-cell.wrong .compare-label { color: #ef4444; }
.compare-cell.right .compare-label { color: #22c55e; }

.compare-text {
    font-size: 0.85rem;
    line-height: 1.5;
}

.gallery-info {
    padding: 1.25rem;
}

.gallery-category {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: var(--bg-pink);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pink-hot);
    margin-bottom: 0.5rem;
}

.gallery-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.gallery-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.tool-card {
    background: white;
    border: 3px solid rgba(255, 182, 193, 0.2);
    border-radius: 30px;
    padding: 1.75rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.tool-card:hover {
    transform: translateY(-8px);
    border-color: var(--pink-coral);
    box-shadow: var(--shadow-hover);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tool-icon {
    width: 55px;
    height: 55px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    background: var(--bg-pink);
}

.tool-name {
    font-size: 1.15rem;
    font-weight: 700;
}

.tool-category {
    font-size: 0.8rem;
    color: var(--pink-hot);
    font-weight: 600;
}

.tool-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.tool-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.tool-tag {
    padding: 0.25rem 0.6rem;
    background: var(--bg-pink);
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--pink-hot);
}

.tool-link {
    display: block;
    text-align: center;
    padding: 0.75rem;
    background: var(--gradient-pink);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.tool-link:hover {
    transform: scale(1.03);
    box-shadow: 0 6px 25px rgba(255, 107, 138, 0.3);
}

.achievement-popup {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.achievement-popup.show {
    transform: translateX(0);
}

.achievement-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: white;
    border: 3px solid var(--peach);
    border-radius: 25px;
    box-shadow: 0 10px 40px rgba(255, 214, 165, 0.3);
}

.achievement-icon {
    font-size: 2.5rem;
    animation: wiggle 0.5s ease-in-out;
}

.achievement-text {
    display: flex;
    flex-direction: column;
}

.achievement-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

.achievement-desc {
    font-size: 1rem;
    font-weight: 700;
    background: var(--gradient-candy);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 1200px) {
    .tree-container {
        grid-template-columns: 1fr;
    }
    
    .tree-sidebar,
    .tree-detail {
        position: static;
    }
    
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats-cute {
        display: none;
    }
}

@media (max-width: 1024px) {
    .quick-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-card.large {
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
    
    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
    }
    
    .main {
        padding: 100px 1rem 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .level-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .level-cards {
        grid-template-columns: 1fr;
    }
}

/* ==================== Radio Station ==================== */

.radio-container {
    max-width: 1200px;
    margin: 0 auto;
}

.radio-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem 2.5rem;
    background: linear-gradient(135deg, #fff5f8, #f0f0ff, #fff0f5);
    border-radius: 30px;
    margin-bottom: 2rem;
    border: 3px solid rgba(255, 182, 193, 0.3);
    position: relative;
    overflow: hidden;
}

.radio-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 183, 197, 0.2), transparent);
    border-radius: 50%;
    animation: floatGlow 6s ease-in-out infinite;
}

@keyframes floatGlow {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

.radio-mascot {
    position: relative;
    flex-shrink: 0;
}

.hedgehog {
    width: 120px;
    height: 100px;
    position: relative;
    animation: hedgehogBounce 3s ease-in-out infinite;
}

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

.hedgehog-body {
    width: 80px;
    height: 60px;
    background: linear-gradient(145deg, #deb887, #d2a679);
    border-radius: 40px 40px 35px 35px;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: inset -5px -5px 15px rgba(0,0,0,0.1);
}

.hedgehog-face {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 35px;
}

.hedgehog-eye {
    width: 8px;
    height: 10px;
    background: #333;
    border-radius: 50%;
    position: absolute;
    left: 12px;
    top: 5px;
    animation: blink 4s ease-in-out infinite;
}

.hedgehog-eye::after {
    content: '';
    position: absolute;
    width: 3px;
    height: 3px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
}

@keyframes blink {
    0%, 45%, 55%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.1); }
}

.hedgehog-nose {
    width: 10px;
    height: 8px;
    background: #333;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 8px;
}

.hedgehog-cheek {
    width: 12px;
    height: 6px;
    background: rgba(255, 150, 150, 0.5);
    border-radius: 50%;
    position: absolute;
    left: 5px;
    bottom: 12px;
    animation: blush 2s ease-in-out infinite;
}

@keyframes blush {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.hedgehog-quills {
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 3px;
}

.hedgehog-quills span {
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 25px solid #8b7355;
    transform-origin: bottom center;
    animation: quillWave 2s ease-in-out infinite;
}

.hedgehog-quills span:nth-child(1) { animation-delay: 0s; transform: rotate(-15deg); }
.hedgehog-quills span:nth-child(2) { animation-delay: 0.1s; transform: rotate(-8deg); }
.hedgehog-quills span:nth-child(3) { animation-delay: 0.2s; transform: rotate(0deg); }
.hedgehog-quills span:nth-child(4) { animation-delay: 0.3s; transform: rotate(8deg); }
.hedgehog-quills span:nth-child(5) { animation-delay: 0.4s; transform: rotate(15deg); }

@keyframes quillWave {
    0%, 100% { transform: rotate(var(--rotate, 0deg)) translateY(0); }
    50% { transform: rotate(var(--rotate, 0deg)) translateY(-3px); }
}

.radio-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
}

.radio-title {
    position: relative;
    z-index: 1;
}

.radio-title h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ff8fa3, #e0c3fc, #ffd6a5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.radio-title p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.radio-waves {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 4px;
    height: 40px;
    margin-bottom: 2rem;
}

.wave {
    width: 4px;
    background: linear-gradient(to top, var(--pink-coral), var(--lavender));
    border-radius: 2px;
    animation: waveAnim 1s ease-in-out infinite;
}

.wave-1 { height: 15px; animation-delay: 0s; }
.wave-2 { height: 30px; animation-delay: 0.1s; }
.wave-3 { height: 20px; animation-delay: 0.2s; }

@keyframes waveAnim {
    0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
    50% { transform: scaleY(1); opacity: 1; }
}

.radio-main {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
}

.radio-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.radio-card {
    background: white;
    border-radius: 25px;
    padding: 1.5rem;
    border: 3px solid rgba(255, 182, 193, 0.25);
    box-shadow: 0 8px 30px rgba(255, 143, 163, 0.1);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.radio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 143, 163, 0.15);
}

.card-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--pink-hot);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.badge-icon {
    animation: spin 4s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.now-playing-info {
    text-align: center;
}

.music-visual {
    margin-bottom: 1rem;
}

.music-bar-anim {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 4px;
    height: 30px;
}

.music-bar-anim span {
    width: 5px;
    background: linear-gradient(to top, var(--pink-coral), var(--lavender));
    border-radius: 3px;
    animation: musicBar 0.8s ease-in-out infinite;
}

.music-bar-anim span:nth-child(1) { animation-delay: 0s; }
.music-bar-anim span:nth-child(2) { animation-delay: 0.15s; }
.music-bar-anim span:nth-child(3) { animation-delay: 0.3s; }
.music-bar-anim span:nth-child(4) { animation-delay: 0.15s; }
.music-bar-anim span:nth-child(5) { animation-delay: 0s; }

@keyframes musicBar {
    0%, 100% { height: 8px; }
    50% { height: 25px; }
}

.now-playing-info h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.now-playing-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.categories h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--bg-pink);
    border: 2px solid transparent;
    border-radius: 15px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.category-btn:hover {
    background: white;
    border-color: var(--pink-coral);
    transform: translateX(5px);
}

.category-btn.active {
    background: linear-gradient(135deg, var(--pink-coral), var(--lavender));
    color: white;
    border-color: transparent;
}

.quick-post h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.quick-post textarea {
    width: 100%;
    height: 100px;
    padding: 1rem;
    background: var(--bg-pink);
    border: 2px solid transparent;
    border-radius: 15px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    color: var(--text-dark);
    resize: none;
    transition: all 0.35s ease;
}

.quick-post textarea:focus {
    outline: none;
    border-color: var(--pink-coral);
    background: white;
}

.quick-post textarea::placeholder {
    color: var(--text-muted);
}

.post-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.post-select {
    flex: 1;
    padding: 0.75rem 1rem;
    background: white;
    border: 2px solid rgba(255, 182, 193, 0.3);
    border-radius: 12px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.85rem;
    color: var(--text-dark);
    cursor: pointer;
}

.post-select:focus {
    outline: none;
    border-color: var(--pink-coral);
}

.post-btn {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--pink-coral), var(--lavender));
    border: none;
    border-radius: 12px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.post-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(255, 143, 163, 0.3);
}

.radio-feed {
    background: white;
    border-radius: 25px;
    padding: 1.75rem;
    border: 3px solid rgba(255, 182, 193, 0.25);
    box-shadow: 0 8px 30px rgba(255, 143, 163, 0.1);
}

.feed-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px dashed rgba(255, 182, 193, 0.2);
}

.feed-header h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
}

.feed-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.feed-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-height: 600px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.feed-list::-webkit-scrollbar {
    width: 6px;
}

.feed-list::-webkit-scrollbar-track {
    background: var(--bg-pink);
    border-radius: 3px;
}

.feed-list::-webkit-scrollbar-thumb {
    background: var(--pink-coral);
    border-radius: 3px;
}

.letter-card {
    background: linear-gradient(135deg, #fffaf5, #fff5f8);
    border-radius: 20px;
    padding: 1.5rem;
    border: 2px solid rgba(255, 182, 193, 0.2);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    cursor: pointer;
}

.letter-card:hover {
    transform: translateX(10px) scale(1.01);
    border-color: var(--pink-coral);
    box-shadow: 0 10px 30px rgba(255, 143, 163, 0.15);
}

.letter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.letter-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--pink-coral), var(--lavender));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.author-info h5 {
    font-size: 0.95rem;
    color: var(--text-dark);
    font-weight: 700;
}

.author-info span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.letter-tag {
    padding: 0.3rem 0.75rem;
    background: var(--bg-pink);
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--pink-hot);
}

.letter-title {
    font-size: 1.05rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.letter-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.letter-footer {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.letter-action {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.letter-action:hover {
    color: var(--pink-hot);
    transform: scale(1.1);
}

.letter-action.liked {
    color: var(--pink-hot);
}

.letter-action.liked .action-icon {
    animation: heartBeat 0.6s ease;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

.radio-footer {
    margin-top: 2rem;
    text-align: center;
}

.radio-quote {
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, #fff5f8, #f0f0ff);
    border-radius: 20px;
    border: 2px dashed rgba(255, 182, 193, 0.3);
}

.radio-quote span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* 响应式 */
@media (max-width: 900px) {
    .radio-main {
        grid-template-columns: 1fr;
    }
    
    .radio-sidebar {
        order: 2;
    }
    
    .radio-feed {
        order: 1;
    }
}

@media (max-width: 600px) {
    .radio-header {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .radio-title h1 {
        font-size: 1.6rem;
    }
    
    .hedgehog {
        transform: scale(0.8);
    }
    
    .post-actions {
        flex-direction: column;
    }
}