:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --accent-primary: #8B5CF6;
    --accent-secondary: #6366F1;
    --border-color: #2a2a4a;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-container {
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--text-primary);
    font-size: 28px;
    margin-bottom: 10px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--warning-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px; /* Larger font for mobile */
    transition: border-color 0.3s;
    -webkit-appearance: none; /* iOS styling */
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-group input {
    width: auto;
    margin-right: 10px;
    transform: scale(1.2); /* Larger checkbox for mobile */
}

.checkbox-group label {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.login-btn:hover {
    background: var(--accent-primary);
    color: white;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--error-color);
    display: none;
}

.loading {
    display: none;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 10px;
}

.debug-log {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-top: 20px;
    font-size: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.debug-log h3 {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 10px;
}

.debug-log #log-content {
    font-family: monospace;
    color: var(--text-secondary);
    line-height: 1.4;
}

.debug-log .log-entry {
    margin-bottom: 5px;
    padding: 3px 0;
    border-bottom: 1px solid var(--border-color);
}

.debug-log .log-entry:last-child {
    border-bottom: none;
}

.debug-log .log-success {
    color: var(--success-color);
    font-weight: bold;
}

.debug-log .log-error {
    color: var(--error-color);
    font-weight: bold;
}

.debug-log .log-info {
    color: var(--accent-primary);
}

/* Mobile-specific styles */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
        border-radius: 15px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .login-header p {
        font-size: 13px;
    }
    
    .form-group input {
        padding: 14px 12px;
        font-size: 16px; /* Prevent iOS zoom */
    }
    
    .login-btn {
        padding: 16px;
        font-size: 16px;
    }
}

/* Tablet styles */
@media (min-width: 481px) and (max-width: 768px) {
    .login-container {
        max-width: 450px;
        padding: 35px;
    }
}