.auth-container {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 20px;
    transition: background 0.3s ease;
}

.auth-card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.login-page .auth-card::before {
    background: linear-gradient(135deg, #1e40af 0%, #3730a3 100%);
}

.register-page .auth-card::before {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

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

.auth-header h1 {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 8px 0;
    transition: color 0.3s ease;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
    transition: color 0.3s ease;
}

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

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.form-group input[type="email"],
.form-group input[type="password"],
.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-sizing: border-box;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.form-group input[type="email"]:hover,
.form-group input[type="password"]:hover,
.form-control:hover {
    border-color: var(--text-secondary);
}

.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus,
.form-control:focus {
    outline: none;
}

.login-page .form-group input[type="email"]:focus,
.login-page .form-group input[type="password"]:focus,
.login-page .form-control:focus {
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.register-page .form-group input[type="email"]:focus,
.register-page .form-group input[type="password"]:focus,
.register-page .form-control:focus {
    border-color: #059669;
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.2);
}

.checkbox-group label {
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
    transition: color 0.3s ease;
}

.submit-btn,
input[type="submit"].submit-btn {
    width: 100%;
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.login-page .submit-btn,
.login-page input[type="submit"].submit-btn {
    background: linear-gradient(135deg, #1e40af 0%, #3730a3 100%);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.login-page .submit-btn:hover,
.login-page input[type="submit"].submit-btn:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #4338ca 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(30, 64, 175, 0.4);
}

.register-page .submit-btn,
.register-page input[type="submit"].submit-btn {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.register-page .submit-btn:hover,
.register-page input[type="submit"].submit-btn:hover {
    background: linear-gradient(135deg, #047857 0%, #065f46 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(5, 150, 105, 0.4);
}

.submit-btn:active,
input[type="submit"].submit-btn:active {
    transform: translateY(0);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
}

.auth-footer a {
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.login-page .auth-footer a {
    color: #1e40af;
}

.login-page .auth-footer a:hover {
    color: #1d4ed8;
}

.register-page .auth-footer a {
    color: #059669;
}

.register-page .auth-footer a:hover {
    color: #047857;
}

.error-message {
    color: #dc2626;
    font-size: 0.85rem;
    margin-top: 4px;
    display: block;
}

.flash-messages {
    margin-bottom: 20px;
}

.flash-message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-weight: 500;
}

.flash-message.error {
    background-color: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.flash-message.success {
    background-color: #f0fdf4;
    color: #059669;
    border: 1px solid #bbf7d0;
}

.password-requirements {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.password-requirements ul {
    margin: 4px 0 0 0;
    padding-left: 20px;
}

.password-requirements li {
    margin-bottom: 2px;
}

/* Dark theme styles */
[data-theme="dark"] .flash-message.error {
    background-color: #450a0a;
    color: #fca5a5;
    border: 1px solid #7f1d1d;
}

[data-theme="dark"] .flash-message.success {
    background-color: #052e16;
    color: #86efac;
    border: 1px solid #14532d;
}