/* ==============================================
   LOGIN PAGE STYLES
   ============================================== */

html {
    height: 100%;
}

body.login-page {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--primary-gradient);
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0;
    margin: 0;
}

/* Animated background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(-45deg, var(--primary-gradient-start), var(--primary-gradient-end), var(--warning), var(--secondary-color));
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    z-index: -1;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.login-wrapper {
    z-index: 10;
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0 20px;
}

.back-link {
    display: block;
    margin-bottom: 10px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    width: 100%;
    text-align: left;
    max-width: 340px;
    padding-left: 15px;
    position: relative;
    top: auto;
    left: auto;
}

.back-link:hover {
    color: #ffd700;
}

.login-footer-section {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 15px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.7rem;
    position: absolute;
    bottom: 8px;
    width: 100%;
    padding: 10px 15px 8px 15px;
    background: transparent;
}

.login-footer-section p {
    margin: 3px 0;
}

.login-footer-section a {
    color: #ffd700;
    text-decoration: none;
    font-weight: 600;
}

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

.login-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    max-width: 340px;
    width: 100%;
    margin: 0 auto;
}

.login-header {
    text-align: center;
    margin-bottom: 15px;
}

.login-header i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
    display: block;
}

.login-header h2 {
    color: var(--text-dark);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 3px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.form-label {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 3px;
    font-size: 0.8rem;
}

.form-control {
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(22, 163, 74, 0.25);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.invalid-feedback {
    display: block !important;
    color: var(--danger);
    font-size: 0.7rem;
    margin-top: 2px;
}

.mb-3 {
    margin-bottom: 8px !important;
}

.btn-login {
    background: var(--primary-gradient);
    border: none;
    color: white;
    padding: 7px 12px;
    font-size: 0.85rem;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(22, 163, 74, 0.4);
    color: white;
}

.divider {
    text-align: center;
    margin: 8px 0;
    color: rgba(0, 0, 0, 0.3);
    font-weight: 600;
    position: relative;
    font-size: 0.75rem;
}

.divider:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
}

.divider span {
    background: white;
    padding: 0 6px;
    position: relative;
    z-index: 1;
}

.demo-buttons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-top: 6px;
}

.btn-demo {
    background: white;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 10px;
    font-size: 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    text-decoration: none;
}

.btn-demo:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(22, 163, 74, 0.3);
}

.btn-demo i {
    font-size: 1rem;
}

.btn-demo-admin {
    border-color: #dc3545;
    color: #dc3545;
}

.btn-demo-admin:hover {
    background: #dc3545;
    color: white;
}

.btn-demo-teacher {
    border-color: #28a745;
    color: #28a745;
}

.btn-demo-teacher:hover {
    background: #28a745;
    color: white;
}

.btn-demo-student {
    border-color: #007bff;
    color: #007bff;
}

.btn-demo-student:hover {
    background: #007bff;
    color: white;
}

.btn-demo-parent {
    border-color: #fd7e14;
    color: #fd7e14;
}

.btn-demo-parent:hover {
    background: #fd7e14;
    color: white;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.8rem;
}

.form-check-input {
    width: 14px;
    height: 14px;
    margin-right: 6px;
    border: 1px solid #ddd;
    border-radius: 3px;
}

.form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.form-check-label {
    color: #2c3e50;
    font-weight: 500;
    margin: 0;
    font-size: 0.8rem;
}

.alert {
    border-radius: 6px;
    margin-bottom: 8px;
    padding: 8px 10px;
    font-size: 0.75rem;
}

/* ==============================================
   RESPONSIVE DESIGN - TABLET
   ============================================== */

@media (max-width: 768px) {
    body.login-page {
        padding: 0;
    }

    .login-wrapper {
        padding: 0 10px;
    }

    .login-card {
        padding: 15px;
        max-width: 100%;
        margin: 0;
    }

    .login-header {
        margin-bottom: 10px;
    }

    .login-header h2 {
        font-size: 1.1rem;
    }

    .login-header i {
        font-size: 1.5rem;
    }

    .form-control {
        padding: 6px 10px;
        font-size: 0.85rem;
    }

    .btn-login {
        padding: 7px 12px;
        font-size: 0.85rem;
    }

    .demo-buttons-grid {
        grid-template-columns: 1fr 1fr;
        gap: 5px;
    }

    .btn-demo {
        padding: 7px 6px;
        font-size: 0.7rem;
    }

    .btn-demo i {
        font-size: 0.9rem;
    }

    .back-link {
        padding-left: 10px;
        margin-bottom: 8px;
        font-size: 0.75rem;
    }

    .login-footer-section {
        font-size: 0.65rem;
        padding: 8px 10px;
    }
}

/* ==============================================
   RESPONSIVE DESIGN - MOBILE
   ============================================== */

@media (max-width: 480px) {
    .login-card {
        padding: 12px;
        max-width: 100%;
    }

    .login-header {
        margin-bottom: 8px;
    }

    .login-header h2 {
        font-size: 1rem;
    }

    .login-header i {
        font-size: 1.3rem;
    }

    .demo-buttons-grid {
        gap: 4px;
    }

    .btn-demo {
        padding: 6px 5px;
        font-size: 0.65rem;
    }

    .btn-demo i {
        font-size: 0.8rem;
    }
}