:root {
    --primary-gradient: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    --card-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* Login page */
.login-page {
    background: var(--primary-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-box {
    width: 100%;
    max-width: 420px;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.login-card-header {
    background: var(--primary-gradient);
    padding: 1.5rem;
    text-align: center;
    border-bottom: 0;
}

.login-card-body {
    padding: 2rem;
    background-color: #fff;
}

.login-logo {
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.login-logo i {
    font-size: 2.5rem;
    color: white;
}

.form-control {
    border-radius: 6px;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d3e2;
    transition: all 0.2s;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.input-group-text {
    background-color: #fff;
    border-radius: 6px 0 0 6px;
}

.password-toggle {
    cursor: pointer;
    background: transparent;
    border: none;
    color: #6c757d;
    transition: color 0.2s;
}

.password-toggle:hover {
    color: #0d6efd;
}

.btn-login {
    background: var(--primary-gradient);
    border: none;
    padding: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.2s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #6c757d;
    font-size: 0.9rem;
}

.login-footer a {
    color: #0d6efd;
    text-decoration: none;
    transition: color 0.2s;
}

.login-footer a:hover {
    color: #0a58ca;
    text-decoration: underline;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}