/* Main Styles - Dark Mode */
:root {
    --primary-color: #6366f1;
    --primary-hover: #7c3aed;
    --primary-glow: rgba(99, 102, 241, 0.3);
    
    --background: #0a0a0a;
    --surface: #141414;
    --surface-elevated: #1a1a1a;
    
    --text: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    
    --border: #262626;
    --border-hover: #404040;
    
    --error: #ef4444;
    --success: #22c55e;
    
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Login Container */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.05), transparent),
                var(--background);
}

.login-card {
    background: var(--surface);
    padding: 3rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3),
                0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

.login-card h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text);
    letter-spacing: -0.025em;
}

.login-card h1::before {
    content: "";
    display: block;
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    opacity: 0.9;
}

/* Info Container */
.info-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.05), transparent),
                var(--background);
}

.info-card {
    background: var(--surface);
    padding: 3rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3),
                0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

.info-card h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text);
    letter-spacing: -0.025em;
}

.info-card p {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Form Styles */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

.form-group input {
    padding: 0.875rem 1rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    color: var(--text);
    transition: all 0.2s ease;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:hover {
    border-color: var(--border-hover);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: white;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px var(--primary-glow),
                0 4px 6px -2px var(--primary-glow);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Input validation states */
.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--error);
}

.form-group input:valid:not(:placeholder-shown) {
    border-color: var(--success);
}

.register-link {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

.register-link a:hover {
    color: var(--primary-hover);
}