:root {
    /* Light theme variables */
    --primary-color: #0052cc;
    --secondary-color: #ffd700;
    --background-color: #ffffff;
    --text-color: #333333;
    --card-bg: #f8f9fa;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --error-color: #dc3545;
}

[data-bs-theme="dark"] {
    /* Dark theme variables */
    --primary-color: #0066ff;
    --secondary-color: #ffd700;
    --background-color: #1a1a1a;
    --text-color: #ffffff;
    --card-bg: #2d2d2d;
    --border-color: #444444;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --error-color: #ff6b70;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-color);
    opacity: 0.9;
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: #333;
}

.navbar {
    background-color: var(--card-bg) !important;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-form {
    width: 100%;
    max-width: 420px;
    padding: 2rem;
    border-radius: 8px;
}

.login-logo {
    margin-bottom: 2rem;
    text-align: center;
}

.login-logo img {
    max-width: 200px;
    height: auto;
}

.form-control {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.form-control:focus {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 82, 204, 0.25);
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Enhanced Login Progress Styles */
.login-form .btn.processing {
    cursor: not-allowed;
    opacity: 0.8;
    transform: translateY(1px);
    transition: all 0.3s ease;
    position: relative;
}

.login-progress {
    border-radius: 15px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
    height: 25px;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-bs-theme="dark"] .login-progress {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-progress-bar {
    background: linear-gradient(90deg, #007bff 0%, #17a2b8 30%, #20c997 70%, #28a745 100%) !important;
    color: white !important;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    line-height: 1;
    position: relative;
    overflow: hidden;
}

/* Add shimmer effect to progress bar */
.login-progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.login-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Button success state */
.btn.btn-success.processing {
    background: linear-gradient(135deg, #28a745, #20c997) !important;
    border-color: #28a745;
    box-shadow: 0 0 15px rgba(40, 167, 69, 0.3);
}

/* Smooth transitions for all buttons */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Alert improvements */
.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

[data-bs-theme="dark"] .alert {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* Focus improvements */
.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
    border-color: #007bff;
}