:root {
    --mouse-x: 0;
    --mouse-y: 0;
    --bg-dark: #0a0c10;
    --bg-card: rgba(22, 27, 34, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    
    --accent-blue: #2f81f7;
    --accent-purple: #a371f7;
    --accent-cyan: #39d353;
    --accent-pink: #f778ba;
    
    --glow-blue: rgba(47, 129, 247, 0.5);
    --glow-purple: rgba(163, 113, 247, 0.5);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at calc(50% + var(--mouse-x) * 20%) calc(50% + var(--mouse-y) * 20%), rgba(47, 129, 247, 0.1) 0%, transparent 50%),
                radial-gradient(circle at calc(80% - var(--mouse-x) * 30%) calc(20% - var(--mouse-y) * 30%), rgba(163, 113, 247, 0.1) 0%, transparent 40%);
    animation: pulse 15s infinite alternate;
    z-index: -2;
    pointer-events: none;
    transition: background 0.2s ease;
}

.particles {
    position: fixed;
    top: -50px;
    left: -50px;
    width: calc(100% + 100px);
    height: calc(100% + 100px);
    z-index: -1;
    pointer-events: none;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
    transform: translate(calc(var(--mouse-x) * 40px), calc(var(--mouse-y) * 40px));
    transition: transform 0.1s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@keyframes pulse {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.1) translate(-2%, -2%); }
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.glow-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px var(--glow-blue);
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.search-section {
    animation: fadeInUp 0.8s ease-out 0.2s both;
    transform-style: preserve-3d;
    transform: perspective(1000px);
}

#search-form {
    transform: translateZ(30px);
}

.recent-searches {
    transform: translateZ(20px);
}

.input-group {
    display: flex;
    gap: 1rem;
    position: relative;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.input-group:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(47, 129, 247, 0.2);
}

.input-icon {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

#search-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem 1rem 1rem 3rem;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-body);
    outline: none;
}

#search-input::placeholder {
    color: var(--text-secondary);
}

.glow-button {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    border-radius: 8px;
    color: white;
    padding: 0 2rem;
    font-weight: 600;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glow-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

.glow-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--glow-purple);
}

.glow-button:hover::before {
    left: 100%;
    transition: 0.5s;
}

.glow-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.recent-searches {
    margin-top: 1.5rem;
}

.recent-searches h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.history-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.history-tag {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.history-tag:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--accent-blue);
}

#loading-state {
    text-align: center;
    padding: 3rem;
}

.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(47, 129, 247, 0.2);
    border-radius: 50%;
    border-top-color: var(--accent-blue);
    animation: spin 1s ease-in-out infinite;
}

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

.error-card {
    text-align: center;
    border-color: rgba(248, 81, 73, 0.3);
    background: rgba(248, 81, 73, 0.05);
}

.error-card i {
    font-size: 3rem;
    color: #f85149;
    margin-bottom: 1rem;
}

#error-title {
    color: #f85149;
    margin-bottom: 0.5rem;
}

.tilt-card {
    transform-style: preserve-3d;
    transform: perspective(1000px);
}

.repo-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    transform: translateZ(30px);
}

.repo-title-wrapper {
    display: flex;
    gap: 1.2rem;
    align-items: center;
}

.avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 2px solid var(--accent-purple);
    box-shadow: 0 0 15px var(--glow-purple);
}

#repo-name {
    font-size: 2rem;
    font-family: var(--font-heading);
    margin-bottom: 0.2rem;
}

.owner-name {
    color: var(--text-secondary);
    font-size: 1rem;
}

.repo-actions {
    display: flex;
    gap: 0.8rem;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.icon-btn:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--glow-blue);
}

.repo-desc {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--text-primary);
    transform: translateZ(20px);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    transform: translateZ(40px);
}

.stat-box {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    transform-style: preserve-3d;
}

.stat-box > * {
    transform: translateZ(20px);
}

.stat-box:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-purple);
    transform: translateY(-2px);
}

.stat-box i {
    font-size: 1.5rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.meta-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    transform: translateZ(10px);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.repo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.repo-card-mini {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    transform-style: preserve-3d;
}

.repo-card-mini > * {
    transform: translateZ(30px);
}

.repo-card-mini:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.repo-card-mini h3 {
    color: var(--accent-blue);
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

.repo-card-mini p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    flex: 1;
}

.mini-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.text-yellow { color: #e3b341; }
.text-blue { color: var(--accent-blue); }
.text-red { color: #f85149; }
.text-green { color: var(--accent-cyan); }
.text-purple { color: var(--accent-purple); }
.text-cyan { color: #58a6ff; }

.hidden { display: none !important; }
.section-title { margin-bottom: 1rem; font-family: var(--font-heading); }

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

footer {
    text-align: center;
    padding-top: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
        background: transparent;
        border: none;
        padding: 0;
    }
    
    #search-input {
        background: rgba(0, 0, 0, 0.3);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        width: 100%;
    }
    
    .input-icon {
        top: 25px;
    }
    
    .glow-button {
        width: 100%;
        padding: 1rem;
        justify-content: center;
    }
    
    h1 { font-size: 2.2rem; }
    
    .repo-header {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .repo-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* ====== ANALYTICS SECTION ====== */

.analytics-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin: 0.5rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.analytics-title i { color: var(--accent-blue); }

/* Profile Header Card */
.profile-header-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    animation: fadeInUp 0.5s ease-out both;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 2px solid var(--accent-purple);
    box-shadow: 0 0 20px var(--glow-purple);
    flex-shrink: 0;
}

.profile-info {
    flex: 1;
}

.profile-info h2 {
    font-size: 1.6rem;
    font-family: var(--font-heading);
    margin-bottom: 0.1rem;
}

.profile-bio {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0.4rem 0 0.6rem;
}

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

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.profile-meta-item a {
    color: var(--accent-blue);
    text-decoration: none;
}

.profile-meta-item a:hover { text-decoration: underline; }

/* Quick Stats Row */
.quick-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    animation: fadeInUp 0.5s ease-out 0.1s both;
}

.quick-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.2rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    transition: var(--transition);
    cursor: default;
}

.quick-stat-card:hover {
    border-color: var(--icon-color, var(--accent-blue));
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.quick-stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--icon-color) 15%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--icon-color);
    flex-shrink: 0;
}

.quick-stat-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.quick-stat-value {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
}

.quick-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Charts Row */
.charts-row {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 1.5rem;
    animation: fadeInUp 0.5s ease-out 0.2s both;
}

.chart-panel {
    padding: 1.5rem;
}

.chart-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.chart-title i { color: var(--accent-blue); }

/* Donut Chart */
.donut-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 1.2rem;
}

.donut-wrapper canvas {
    position: relative;
    z-index: 1;
}

.donut-center-label {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.donut-center-label span {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.donut-center-label small {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.lang-legend {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 160px;
    overflow-y: auto;
}

.lang-legend::-webkit-scrollbar { width: 3px; }
.lang-legend::-webkit-scrollbar-track { background: transparent; }
.lang-legend::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-name {
    flex: 1;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.legend-pct {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-family: var(--font-heading);
}

/* Heatmap */
.heatmap-panel { overflow: hidden; }
.heatmap-note {
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-weight: 400;
    font-family: var(--font-body);
}

.heatmap-months {
    position: relative;
    height: 16px;
    margin-bottom: 4px;
    overflow: hidden;
}

.heatmap-month-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    white-space: nowrap;
    line-height: 16px;
}

.heatmap-grid {
    display: flex;
    flex-direction: row;
    gap: 3px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.heatmap-grid::-webkit-scrollbar { height: 3px; }
.heatmap-grid::-webkit-scrollbar-track { background: transparent; }
.heatmap-grid::-webkit-scrollbar-thumb { background: var(--border-color); }

.heatmap-week {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex-shrink: 0;
}

.heatmap-day {
    width: 11px;
    height: 11px;
    border-radius: 2px;
    transition: transform 0.15s ease;
    cursor: default;
    flex-shrink: 0;
}

.heatmap-day:hover { transform: scale(1.6); z-index: 10; position: relative; }

.heatmap-day[data-level="0"] { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); }
.heatmap-day[data-level="1"] { background: #0e4429; }
.heatmap-day[data-level="2"] { background: #006d32; }
.heatmap-day[data-level="3"] { background: #26a641; }
.heatmap-day[data-level="4"] { background: #39d353; }

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 10px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    justify-content: flex-end;
}

.heatmap-swatch {
    width: 11px;
    height: 11px;
    border-radius: 2px;
}
.heatmap-swatch[data-level="0"] { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); }
.heatmap-swatch[data-level="1"] { background: #0e4429; }
.heatmap-swatch[data-level="2"] { background: #006d32; }
.heatmap-swatch[data-level="3"] { background: #26a641; }
.heatmap-swatch[data-level="4"] { background: #39d353; }

/* Responsive */
@media (max-width: 900px) {
    .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .profile-header-card { flex-wrap: wrap; }
    .quick-stats-row { grid-template-columns: repeat(3, 1fr); }
    .quick-stat-label { display: none; }
}