:root {
    --bg-main: #0a0a0c;
    --bg-side: #111114;
    --accent: #6d5dfc;
    --accent-glow: rgba(109, 93, 252, 0.4);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(10, 10, 12, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    --sidebar-width: 280px;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

h1, h2, h3 {
    font-family: 'Outfit', sans-serif;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-side);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    margin-bottom: 40px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent), #ff4d94);
    border-radius: 8px;
    box-shadow: 0 0 15px var(--accent-glow);
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    list-style: none;
    flex: 1;
}

.nav-links li {
    padding: 12px 24px;
    margin: 4px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.nav-links li:hover {
    background: var(--card-bg);
    color: var(--text-primary);
}

.nav-links li.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.sidebar-footer {
    padding: 24px;
    border-top: 1px solid var(--card-border);
}

.language-switcher {
    margin-bottom: 20px;
}

#language-select {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 10px 35px 10px 15px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

#language-select:focus {
    border-color: var(--accent);
}

#language-select option {
    background: var(--bg-side);
    color: var(--text-primary);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 36px;
    height: 36px;
    background: #333;
    border-radius: 50%;
    background-image: linear-gradient(45deg, #12c2e9, #c471ed, #f64f59);
}

.user-info .name {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

.user-info .status {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-main);
    position: relative;
    overflow-y: auto;
}

.content-header {
    min-height: 80px;
    padding: 24px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 90;
    border-bottom: 1px solid var(--card-border);
    flex-shrink: 0;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 10px 16px;
    border-radius: 12px;
    width: 400px;
    transition: var(--transition);
}

.search-bar:focus-within {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.search-bar input {
    background: none;
    border: none;
    color: white;
    margin-left: 10px;
    outline: none;
    width: 100%;
    font-size: 14px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--accent-glow);
}

.btn-secondary {
    background: var(--card-bg);
    color: white;
    border: 1px solid var(--card-border);
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
}

/* Discover Page */
#page-content {
    padding: 40px;
}

.section-title {
    margin-bottom: 30px;
}

.section-title h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.section-title p {
    color: var(--text-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.skill-card:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 15px var(--accent-glow);
}

.popularity-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    margin-bottom: 20px;
    overflow: hidden;
}

.popularity-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1s ease-out;
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-item {
    font-size: 11px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.platform-badge {
    padding: 6px 12px;
    background: rgba(109, 93, 252, 0.15);
    color: var(--accent);
    border: 1px solid rgba(109, 93, 252, 0.3);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.trending-badge {
    padding: 6px 12px;
    background: rgba(255, 77, 148, 0.15);
    color: #ff4d94;
    border: 1px solid rgba(255, 77, 148, 0.3);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.save-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-secondary);
}

.save-btn.active {
    color: #ff4d94;
}

.skill-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.skill-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.card-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.copy-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.category-tag {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
}

.install-cmd {
    background: #000;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.install-cmd code {
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    color: #00f2fe;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-cmd-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    transition: var(--transition);
}

.copy-cmd-btn:hover {
    color: white;
}

.visit-link {
    color: white;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    opacity: 0.8;
}

.visit-link:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: var(--transition);
}

.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}

.modal {
    background: #18181b;
    width: 500px;
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--card-border);
}

.modal h2 {
    margin-bottom: 24px;
}

form input, form select, form textarea {
    width: 100%;
    background: #09090b;
    border: 1px solid var(--card-border);
    padding: 14px;
    border-radius: 12px;
    color: white;
    margin-bottom: 20px;
    outline: none;
}

form input:focus {
    border-color: var(--accent);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Category Filters */
.filters {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.filter-chip {
    padding: 8px 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
}

.filter-chip.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Custom Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: var(--card-border);
    border-radius: 10px;
    border: 2px solid var(--bg-main);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Firefox Support */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--card-border) var(--bg-main);
}