:root {
    --bg-color: #0c0e14;
    --sidebar-bg: #141721;
    --accent-color: #00d2ff;
    --accent-glow: rgba(0, 210, 255, 0.4);
    --secondary-accent: #3a7bd5;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

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

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

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 2rem 1rem;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    padding-left: 1rem;
}

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

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background: var(--glass-bg);
    color: #fff;
}

.nav-item.active {
    background: linear-gradient(135deg, var(--secondary-accent), var(--accent-color));
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.nav-item .icon {
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--glass-border);
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    margin-right: 5px;
    box-shadow: 0 0 10px var(--success);
}

/* Main Content Area */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background: radial-gradient(circle at top right, rgba(0, 210, 255, 0.05), transparent 40%);
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.search-box input {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    width: 300px;
    outline: none;
    transition: all 0.3s;
}

.search-box input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
}

.current-latest {
    font-size: 0.9rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
}

.stat-card {
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.stat-card h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1rem;
}

.stat-card .value {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

#latest-version-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 150px;
    height: 150px;
    background: var(--accent-color);
    filter: blur(60px);
    opacity: 0.1;
}

/* History Card & Table */
.content-card {
    padding: 1.5rem;
    width: 100%;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    border-bottom: 1px solid var(--glass-border);
}

td {
    padding: 1rem;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.01);
}

.badge {
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-latest { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge-stable { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }

.changes-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

/* Form Styling */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

.upload-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2.5rem;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.admin-form .form-group {
    margin-bottom: 1.5rem;
}

.admin-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.admin-form input[type="text"],
.admin-form input[type="password"],
.admin-form input[type="file"] {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 1.2rem;
    border-radius: 14px;
    color: #fff;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.admin-form input:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.2);
}

.admin-form input:focus {
    border-color: var(--accent-color);
    background: rgba(0, 210, 255, 0.03);
    box-shadow: 0 0 15px var(--accent-glow), inset 0 0 5px rgba(0, 210, 255, 0.1);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    font-size: 1.1rem;
    opacity: 0.6;
    pointer-events: none;
}

.icon-input input {
    padding-left: 3rem !important;
}

.admin-form input::placeholder {
    color: rgba(255, 255, 255, 0.25);
    font-weight: 300;
}

.divider {
    border: none;
    border-top: 1px solid var(--glass-border);
    margin: 2.5rem 0;
}

.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--glass-bg);
    color: #fff;
    border: 1px solid var(--glass-border);
}

.btn-accent {
    background: linear-gradient(135deg, var(--secondary-accent), var(--accent-color));
    color: #fff;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* Drop Zone */
.drop-zone {
    height: 150px;
    border: 2px dashed var(--glass-border);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s;
    cursor: pointer;
}

.drop-zone--over {
    border-color: var(--accent-color);
    background: rgba(0, 210, 255, 0.05);
}

.drop-zone__input {
    display: none;
}

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

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    padding: 1rem 2rem;
    border-radius: 12px;
    color: #fff;
    animation: slideIn 0.3s ease;
    pointer-events: auto;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.toast.success { background: rgba(16, 185, 129, 0.85); }
.toast.error { background: rgba(239, 68, 68, 0.85); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Login Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(12, 14, 20, 0.85);
    backdrop-filter: blur(15px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.overlay.active {
    opacity: 1;
    pointer-events: all;
}

.login-box {
    width: 100%;
    max-width: 400px;
    padding: 3rem;
    animation: fadeIn 0.5s ease;
}

.login-box .logo {
    justify-content: center;
    margin-bottom: 0.5rem;
}

.confirm-box {
    text-align: center;
    max-width: 450px;
    z-index: 3000;
}

/* Simulator Styles */
.sim-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sim-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sim-item.update { border-left: 3px solid var(--success); }
.sim-item.delete { border-left: 3px solid var(--danger); }

.sim-item .path-info {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: monospace;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-latest { background: rgba(0, 200, 150, 0.2); color: var(--success); border: 1px solid var(--success); }
.badge-stable { background: rgba(0, 150, 255, 0.2); color: var(--accent-color); border: 1px solid var(--accent-color); }
.badge-legacy { background: rgba(255, 100, 100, 0.2); color: var(--danger); border: 1px solid var(--danger); }