:root {
    --primary: #6366f1;
    --secondary: #a855f7;
    --accent: #ec4899;
    --background: #0f172a;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --danger: #ef4444;
    --success: #22c55e;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: var(--background);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Inputs */
input, select, textarea {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    color: var(--text);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    width: 100%;
    margin-bottom: 1rem;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

/* Buttons */
.btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
    display: inline-block;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-danger {
    background: var(--danger);
}

.btn-success {
    background: var(--success);
}

/* Auth Page */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.auth-box {
    width: 100%;
    max-width: 400px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.toggle-auth {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-muted);
}

.toggle-auth a {
    color: var(--accent);
    text-decoration: none;
    cursor: pointer;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: 250px 1fr 300px;
    gap: 2rem;
    padding: 2rem;
    height: 100vh;
    box-sizing: border-box;
}

.sidebar, .main-content, .right-bar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

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

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

/* Utility */
.hidden {
    display: none !important;
}

.text-center { text-align: center; }
.mb-4 { margin-bottom: 1rem; }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }

/* Avatar */
.avatar-upload {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.avatar-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--glass);
    border: 2px solid var(--accent);
    overflow: hidden;
    position: relative;
}

.avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}