@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --green: #4aaa6d;
    --green-light: #5cbe7f;
    --green-dark: #3d9159;
    --brown: #564a4a;
    --brown-light: #6e5f5f;
    --brown-dark: #453b3b;
    --bg-dark: #1a1a2e;
    --bg-card: #16213e;
    --bg-card-hover: #1a2744;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--brown-dark) 0%, var(--bg-dark) 50%, var(--green-dark) 100%);
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(74, 170, 109, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(86, 74, 74, 0.15) 0%, transparent 50%);
}

.header-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--green);
    margin-bottom: 1.5rem;
    box-shadow: 0 0 30px rgba(74, 170, 109, 0.3);
    transition: transform 0.3s ease;
}

.avatar:hover {
    transform: scale(1.05);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--green), var(--green-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--green);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--green);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.profile-link:hover {
    background-color: var(--green);
    color: #fff;
}

.profile-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Stats bar */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border-bottom: 2px solid var(--brown-dark);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--green);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tab navigation */
.tab-nav {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 0 2rem;
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--brown-dark);
}

.tab-btn {
    padding: 0.85rem 1.75rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--green);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--green);
    border-radius: 2px 2px 0 0;
}

.tab-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.tab-count {
    font-size: 0.75rem;
    background: rgba(74, 170, 109, 0.2);
    color: var(--green);
    padding: 0.1rem 0.5rem;
    border-radius: 50px;
    font-weight: 600;
}

.tab-btn:not(.active) .tab-count {
    background: rgba(86, 74, 74, 0.3);
    color: var(--text-secondary);
}

/* Search & Filters */
.controls {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.search-box {
    flex: 1;
    min-width: 250px;
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--brown);
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s ease;
}

.search-box:focus {
    outline: none;
    border-color: var(--green);
}

.search-box::placeholder {
    color: var(--text-secondary);
}

.sort-select {
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--brown);
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.sort-select:focus {
    outline: none;
    border-color: var(--green);
}

/* Repos grid */
.repos-container {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 2rem;
}

.repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.repo-card {
    background: var(--bg-card);
    border: 1px solid rgba(86, 74, 74, 0.3);
    border-radius: 16px;
    padding: 1.75rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.repo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--brown));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.repo-card:hover {
    transform: translateY(-4px);
    border-color: var(--green);
    box-shadow: 0 12px 40px rgba(74, 170, 109, 0.15);
}

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

.repo-card.collab-card::before {
    background: linear-gradient(90deg, var(--brown), var(--green));
}

.repo-owner-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.repo-owner-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--brown);
}

.repo-owner-name {
    font-size: 0.8rem;
    color: var(--brown-light);
    font-weight: 500;
}

.repo-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--green);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.repo-name svg {
    width: 18px;
    height: 18px;
    fill: var(--green);
    flex-shrink: 0;
}

.repo-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 1.25rem;
}

.repo-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.meta-item svg {
    width: 14px;
    height: 14px;
    fill: var(--text-secondary);
}

.lang-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.fork-badge {
    font-size: 0.7rem;
    padding: 0.15rem 0.6rem;
    border-radius: 50px;
    background: rgba(86, 74, 74, 0.4);
    color: var(--brown-light);
    border: 1px solid var(--brown);
}

.collab-badge {
    font-size: 0.7rem;
    padding: 0.15rem 0.6rem;
    border-radius: 50px;
    background: rgba(74, 170, 109, 0.15);
    color: var(--green);
    border: 1px solid rgba(74, 170, 109, 0.4);
}

/* Loading */
.loading {
    text-align: center;
    padding: 4rem 2rem;
    grid-column: 1 / -1;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--brown);
    border-top-color: var(--green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
    grid-column: 1 / -1;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid rgba(86, 74, 74, 0.3);
}

.footer a {
    color: var(--green);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
    .header h1 {
        font-size: 1.8rem;
    }

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

    .stats-bar {
        gap: 1.5rem;
    }

    .avatar {
        width: 90px;
        height: 90px;
    }

    .tab-btn {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }
}