/* ====================================================================
   TUTOR PORTAL - Styling (sama macam parent page)
   ==================================================================== */

/* Reset & Variables - guna dari main style.css */
.tutor-container {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Sidebar - sama macam parent portal */
.desktop-sidebar {
    width: 230px;
    background: var(--white);
    border-right: 1px solid var(--slate-200);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    height: 100dvh;
    overflow-y: auto;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    padding: 1.25rem 0.875rem;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 0 0.5rem 1.1rem;
    text-align: center;
    border-bottom: 1px solid var(--slate-100);
    margin-bottom: 0.25rem;
}

.sidebar-header .logo-img {
    width: 40px;
    height: 40px;
    background: var(--primary-soft);
    border-radius: 10px;
    padding: 7px;
    margin-bottom: 9px;
    object-fit: contain;
    border: 1.5px solid var(--primary-border);
}

.sidebar-header h2 {
    font-size: var(--font-size-base);
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--slate-900);
}

.sidebar-header h2 span { color: var(--primary); }
.sidebar-header p {
    font-size: var(--font-size-xs);
    color: var(--slate-400);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 1px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 0.6rem 0;
    flex: 1;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 11px;
    border-radius: var(--radius-xs);
    color: var(--slate-600);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition);
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-family: var(--font);
}

.sidebar-nav .nav-item i {
    width: 17px;
    font-size: var(--font-size-base);
    color: var(--slate-400);
    transition: color 0.15s ease;
    text-align: center;
}

.sidebar-nav .nav-item:hover {
    background: var(--slate-50);
    color: var(--slate-900);
}

.sidebar-nav .nav-item:hover i { color: var(--primary); }

.sidebar-nav .nav-item.active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--primary);
}

.sidebar-nav .nav-item.active i { color: var(--primary); }

.sidebar-nav .nav-item.logout {
    margin-top: auto;
    color: var(--slate-400);
    border-top: 1px solid var(--slate-100);
    padding-top: 0.7rem;
    margin-top: 0.5rem;
}

.sidebar-nav .nav-item.logout:hover {
    color: var(--danger);
    background: var(--danger-soft);
}

.sidebar-nav .nav-item.logout:hover i { color: var(--danger); }

/* Main Content */
.tutor-main-content {
    margin-left: 230px;
    padding: 1.5rem 1.375rem;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--bg);
    flex: 1;
    position: relative;
    z-index: 1;
}

/* Mobile Header */
.mobile-header {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--slate-100);
    z-index: 90;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
}

.mobile-header .logo {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
    justify-content: center;
}

.mobile-header .logo-text h1 {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--slate-900);
    letter-spacing: -0.3px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-header .logo-text h1 i { color: var(--primary); margin-right: 7px; }
.mobile-header .logo-text p { display: none !important; }

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 0.9rem;
    left: 0.75rem;
    z-index: 101;
    background: var(--white);
    border: 1px solid var(--slate-200);
    font-size: var(--font-size-md);
    color: var(--slate-700);
    width: 36px;
    height: 36px;
    border-radius: 9px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.mobile-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,29,46,0.3);
    backdrop-filter: blur(3px);
    z-index: 99;
}

.mobile-sidebar-overlay.active { display: block; }

/* Stats Grid - sama macam parent */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--slate-100);
    transition: var(--transition);
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-icon {
    width: 38px;
    height: 38px;
    background: var(--primary-soft);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.stat-info { text-align: right; }
.stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--slate-900);
    line-height: 1.2;
}
.stat-label {
    font-size: var(--font-size-xs);
    color: var(--slate-500);
    font-weight: 500;
    margin-top: 1px;
}

/* Tab Content */
.tab-content { display: none; animation: tabFade 0.2s ease; }
.tab-content.active { display: block; }

@keyframes tabFade {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.info-card, .session-card, .student-card {
    background: var(--white);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1rem;
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--slate-100);
    transition: var(--transition);
}

.info-card:hover, .session-card:hover, .student-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.info-card h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--slate-900);
    margin-bottom: 0.55rem;
    display: flex;
    align-items: center;
    gap: 7px;
}

/* Expandable Cards */
.student-card, .session-card {
    cursor: pointer;
}

.student-header, .session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
}

.expand-icon {
    color: var(--slate-400);
    font-size: var(--font-size-sm);
    transition: transform 0.22s ease, color 0.15s ease;
    flex-shrink: 0;
}

.student-card.expanded .expand-icon,
.session-card.expanded .expand-icon {
    transform: rotate(90deg);
    color: var(--primary);
}

.student-body, .session-body {
    display: none;
    padding-top: 0.75rem;
    border-top: 1px solid var(--slate-100);
    margin-top: 0.75rem;
}

.student-card.expanded .student-body,
.session-card.expanded .session-body {
    display: block;
    animation: tabFade 0.2s ease;
}

.detail-row {
    display: flex;
    padding: 4px 0;
    gap: 10px;
    font-size: var(--font-size-sm);
}

.detail-label {
    font-weight: 500;
    color: var(--slate-500);
    min-width: 100px;
    flex-shrink: 0;
}

.detail-value {
    flex: 1;
    color: var(--slate-900);
    word-break: break-word;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 50px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.status-verified { background: var(--success-soft); color: var(--success); border: 1px solid var(--success-border); }
.status-pending { background: var(--warning-soft); color: var(--warning); border: 1px solid var(--warning-border); }
.status-active { background: var(--primary-soft); color: var(--primary); border: 1px solid var(--primary-border); }
.status-completed { background: var(--success-soft); color: var(--success); border: 1px solid var(--success-border); }

/* Buttons */
.btn {
    padding: 8px 18px;
    border-radius: var(--radius-xs);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: var(--transition);
    font-family: var(--font);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(59,91,219,0.2);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(59,91,219,0.3);
}

.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover { background: #077a56; transform: translateY(-1px); }

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--slate-200);
    color: var(--slate-700);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

.btn-sm { padding: 4px 9px; font-size: var(--font-size-xs); }
.btn-block { width: 100%; justify-content: center; }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,29,46,0.3);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal-content {
    background: var(--white);
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--slate-100);
    animation: modalSlide 0.22s ease;
}

@keyframes modalSlide {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--slate-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 1;
}

.modal-header h3 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--slate-900);
    display: flex;
    align-items: center;
    gap: 7px;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: var(--slate-400);
    padding: 4px 8px;
    border-radius: 6px;
    transition: var(--transition);
    line-height: 1;
}

.modal-close:hover { background: var(--slate-100); color: var(--slate-700); }

.modal-body { padding: 1.25rem; }

.form-group { margin-bottom: 0.875rem; }
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--slate-700);
    font-size: var(--font-size-sm);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1.5px solid var(--slate-200);
    border-radius: var(--radius-xs);
    font-family: var(--font);
    font-size: var(--font-size-sm);
    transition: border-color 0.15s ease;
    background: var(--white);
    color: var(--slate-900);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59,91,219,0.1);
}

.modal-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--slate-100);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Calendar / Schedule */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin: 0.5rem 0;
}

.schedule-day-header {
    font-weight: 600;
    font-size: var(--font-size-xs);
    color: var(--slate-500);
    text-align: center;
    padding: 4px 0;
}

.schedule-cell {
    background: var(--white);
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-xs);
    min-height: 60px;
    padding: 4px 6px;
    transition: border-color 0.15s;
    cursor: default;
}

.schedule-cell.has-class {
    border-color: var(--primary-light);
    cursor: pointer;
    background: var(--primary-soft);
}

.schedule-cell.has-class:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59,91,219,0.1);
}

.schedule-cell .day-number {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--slate-600);
    margin-bottom: 2px;
}

.schedule-cell .class-dot {
    display: block;
    font-size: 0.5rem;
    padding: 1px 4px;
    border-radius: 3px;
    background: var(--primary);
    color: white;
    margin-top: 1px;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.schedule-cell.today {
    border-color: var(--accent);
    background: #fffbeb;
}

.schedule-cell.empty { background: transparent; border: none; }

/* Loading */
.loading-placeholder {
    text-align: center;
    padding: 2.5rem 1rem;
}

.spinner {
    width: 28px;
    height: 28px;
    border: 2.5px solid var(--slate-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    margin: 0 auto 0.65rem;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--slate-900);
    color: white;
    padding: 10px 22px;
    border-radius: var(--radius-xs);
    z-index: 1500;
    display: none;
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    max-width: 90%;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2.25rem 1.25rem;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--slate-100);
    box-shadow: var(--shadow);
}

.empty-state i {
    font-size: 2.1rem;
    margin-bottom: 0.65rem;
    color: var(--slate-300);
    display: block;
}

.empty-state p {
    color: var(--slate-500);
    font-size: var(--font-size-base);
}

/* Profile Tab */
.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1rem;
    border: 3px solid var(--primary-soft);
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-avatar .fallback {
    font-size: 3.5rem;
    color: var(--primary);
}

.profile-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.profile-field {
    background: var(--slate-50);
    border: 1px solid var(--slate-100);
    border-radius: var(--radius-xs);
    padding: 0.6rem 0.85rem;
}

.profile-field .label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    font-weight: 700;
    color: var(--slate-500);
    margin-bottom: 2px;
}

.profile-field .value {
    font-size: 0.85rem;
    color: var(--slate-900);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .desktop-sidebar {
        transform: translateX(-100%);
        width: 275px;
        max-width: 80%;
        padding: 1rem 0.75rem;
        box-shadow: var(--shadow-xl);
        border-radius: 0 18px 18px 0;
    }
    .desktop-sidebar.open { transform: translateX(0); }

    .tutor-main-content {
        margin-left: 0;
        padding: 0.9rem;
        padding-top: 78px;
        width: 100%;
    }

    .mobile-header { display: flex; }
    .mobile-menu-toggle { display: flex; }
    .mobile-sidebar-overlay.active { display: block; }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }
    .stat-card { padding: 0.7rem 0.8rem; }
    .stat-value { font-size: var(--font-size-md); }
    .stat-icon { width: 34px; height: 34px; font-size: var(--font-size-sm); }

    .schedule-grid { gap: 2px; }
    .schedule-cell { min-height: 50px; padding: 2px 3px; }
    .schedule-cell .class-dot { font-size: 0.45rem; padding: 1px 3px; }

    .profile-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    .stat-value { font-size: var(--font-size-base); }
    .stat-label { font-size: 0.57rem; }
    .stat-icon { width: 28px; height: 28px; font-size: var(--font-size-xs); border-radius: 8px; }
    .stat-card { padding: 0.55rem 0.7rem; }

    .tutor-main-content {
        padding: 0.7rem;
        padding-top: 62px;
    }
    .mobile-header { padding: 0.4rem 0.75rem; min-height: 48px; }
    .mobile-menu-toggle { width: 32px; height: 32px; font-size: var(--font-size-base); border-radius: 8px; }

    .modal-content {
        max-width: 100%;
        margin: 8px;
        border-radius: var(--radius-sm);
    }
    .schedule-cell { min-height: 40px; }
    .schedule-cell .day-number { font-size: var(--font-size-xs); }
}