:root {
    --primary: #3498db;
    --secondary: #2ecc71;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --text-dim: #cbd5e1;
    --accent: #6366f1;
    --error: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    background-color: var(--dark-bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(52, 152, 219, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(46, 204, 113, 0.1) 0%, transparent 50%);
}

/* Header styles */
header {
    background-color: var(--darker-bg);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s, transform 0.2s;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
}

.nav-links a:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white !important;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Login container */
.page-container {
    display: flex;
    min-height: calc(100vh - 72px); /* Adjust for header height */
}

.login-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.login-container {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 420px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: -1%;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

h1 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dim);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(20, 30, 50, 0.5);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 1rem;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.input-icon {
    position: absolute;
    right: 1rem;
    top: 2.3rem;
    color: var(--text-dim);
    cursor: pointer;
}

.btn {
    width: 100%;
    padding: 0.9rem;
    border-radius: 8px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.toggle-link {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.toggle-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.toggle-link a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Message styling */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: fadeInDown 0.5s;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--success);
    color: var(--success);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--error);
    color: var(--error);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--warning);
    color: var(--warning);
}

.forgot-password {
    display: block;
    text-align: right;
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    text-decoration: none;
}

.forgot-password:hover {
    color: var(--primary);
}

/* Banner */
.banner-section {
    display: none;
    flex: 1;
    background-color: var(--darker-bg);
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.banner-content {
    text-align: center;
    z-index: 2;
    padding: 2rem;
    max-width: 500px;
}

.banner-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-content p {
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.banner-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    text-align: left;
}

.banner-feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-icon {

    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.banner-section::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url('/api/placeholder/800/600');
    background-size: cover;
    opacity: 0.1;
    z-index: 1;
}

.banner-section::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent, var(--darker-bg) 70%);
    z-index: 1;
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Responsive */
@media (min-width: 1024px) {
    .banner-section {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }
    
    .nav-links a:not(:last-child) {
        display: none;
    }
    
    .login-container {
        padding: 2rem 1.5rem;
    }
}

/* Code background animation */
.code-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 0;
    opacity: 0.05;
}

.code-line {
    position: absolute;
    color: var(--primary);
    font-family: monospace;
    white-space: nowrap;
    animation: codeScroll linear infinite;
}

@keyframes codeScroll {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(1000%);
    }
}