/* Reset and Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Variables for Theme Support */
:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --hover-bg: rgba(102, 126, 234, 0.1);
    --accent-color: #667eea;
    --accent-hover: #5a67d8;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --login-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --bg-primary: #1a0f1f;
    --bg-secondary: #2d1b3d;
    --bg-tertiary: #3d2a4d;
    --text-primary: #f0e6ff;
    --text-secondary: #d1c4e9;
    --text-muted: #a8adb7;
    --border-color: #2d3139;
    --card-bg: #1a1d24;
    --card-shadow: 0 4px 20px rgba(156, 39, 176, 0.2);
    --hover-bg: rgba(102, 126, 234, 0.05);
    --accent-color: #9c27b0;
    --accent-hover: #8e24aa;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    --login-gradient: linear-gradient(135deg, #4a148c 0%, #6a1b9a 100%);
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    line-height: 1.6;
    font-weight: 500;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Toggle for Login Pages */
.theme-toggle-login {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.theme-toggle-login:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.theme-toggle-login i {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.theme-toggle-login:hover i {
    transform: rotate(20deg);
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.login-header {
    background: var(--login-gradient);
    color: var(--text-primary);
    padding: 40px 30px;
    text-align: center;
}

.login-header h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.login-header p {
    font-size: 16px;
    opacity: 0.9;
}

/* Alert Messages */
.alert {
    padding: 15px 20px;
    margin: 20px 30px 0;
    border-radius: 8px;
    font-size: 14px;
}

.alert-success {
    background-color: var(--success-color);
    color: white;
    border: 1px solid var(--success-color);
}

.alert-error {
    background-color: var(--danger-color);
    color: white;
    border: 1px solid var(--danger-color);
}

.alert-info {
    background-color: var(--info-color);
    color: white;
    border: 1px solid var(--info-color);
}

/* Login Form */
.login-form {
    padding: 40px 30px;
}

.form-group {
    margin-bottom: 25px;
}

.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: 15px;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    background: var(--bg-tertiary);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    background: var(--accent-hover);
}

.login-footer {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    border-top: 1px solid var(--border-color);
}