:root {
    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --bg-dark: #020617;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --error: #ef4444;
}

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

body {
    font-family: 'Figtree', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Premium Mesh Background */
.bg-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 100% 0%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 50% 100%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
    opacity: 0.8;
}

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

.auth-card {
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 3rem;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-header h2 {
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Form Styling */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.form-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(0);
}

.auth-footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
}

.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.auth-link:hover {
    color: #60a5fa;
    text-decoration: underline;
}

.error-text {
    color: var(--error);
    font-size: 0.75rem;
    margin-top: 0.5rem;
    display: block;
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Checkbox Styling */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.checkbox-input {
    appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    border: 1px solid var(--glass-border);
    border-radius: 0.375rem;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    position: relative;
    transition: all 0.3s;
}

.checkbox-input:checked {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-input:checked::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 0.8rem;
    left: 4px;
    top: 0;
}

/* Layout & Navigation */
.main-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.premium-nav {
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 900;
    text-decoration: none;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-item {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all 0.3s;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-main);
}

/* Dashboard Elements */
.page-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.welcome-section {
    margin-bottom: 3rem;
}

.welcome-section h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 0.5rem;
}

.welcome-section p {
    color: var(--text-muted);
    font-size: 1.125rem;
}

.premium-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 1.25rem;
    padding: 2.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
}

.premium-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}