/* ===== MAIN CONTENT AREA ===== */
.dashboard-main {
    flex: 1;
    margin-left: 260px;
    padding: 20px;
    transition: margin-left 0.3s ease;
    width: 100%;
}

/* Dashboard Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 12px;
}

.page-title h1 {
    font-size: 1.6rem;
    color: var(--gray-800);
    margin-bottom: 5px;
}

.page-title p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

.date-filter {
    display: flex;
    align-items: center;
    gap: 10px;
    background: white;
    padding: 8px 15px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.date-filter i {
    color: var(--primary);
    font-size: 0.9rem;
}

.date-filter select {
    border: none;
    background: transparent;
    font-weight: 500;
    color: var(--gray-700);
    outline: none;
    cursor: pointer;
    padding: 5px;
    font-size: 0.9rem;
    width: 100%;
}

/* ===== STATS CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.stat-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.stat-title {
    color: var(--gray-500);
    font-size: 0.85rem;
    font-weight: 500;
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.stat-icon.upcoming {
    background: rgba(6, 182, 212, 0.1);
    color: var(--secondary);
}

.stat-icon.requested {
    background: rgba(249, 115, 22, 0.1);
    color: var(--accent);
}

.stat-icon.completed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 5px;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--gray-500);
    flex-wrap: wrap;
}

.trend-up {
    color: var(--success);
}

/* ===== UPCOMING SESSION CARD ===== */
.upcoming-session-card {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-xl);
    padding: 25px;
    margin-bottom: 25px;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.upcoming-session-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.session-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    margin-bottom: 15px;
    backdrop-filter: blur(10px);
}

.session-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.session-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.student-name {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.session-details {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.detail-item i {
    font-size: 1rem;
    opacity: 0.9;
}

.countdown-timer {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 5px;
    border-radius: var(--radius-xl);
    text-align: center;
    min-width: 180px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.timer-label {
    font-size: 0.8rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

.timer-display {
    font-size: 2rem;
    font-weight: 700;
    font-family: monospace;
    letter-spacing: 2px;
}

.timer-unit {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-left: 3px;
}

/* ===== CHARTS SECTION ===== */
.charts-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.chart-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.chart-header h3 {
    font-size: 1.1rem;
    color: var(--gray-800);
}

.chart-legend {
    display: flex;
    gap: 15px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--gray-600);
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 3px;
}

.legend-color.sessions {
    background: var(--primary);
}

.legend-color.hours {
    background: var(--secondary);
}

.chart-container {
    height: 250px;
    position: relative;
}

/* ===== PAYMENT CARDS ===== */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.payment-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.payment-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.payment-header h3 {
    font-size: 1rem;
    color: var(--gray-700);
}

.payment-header i {
    font-size: 1.3rem;
    color: var(--primary);
}

.payment-amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 10px;
    word-break: break-word;
}

.payment-amount small {
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 400;
}

.payment-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--gray-200);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 5px;
}

.payment-change {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--success);
    font-weight: 500;
}

.payment-date {
    color: var(--gray-500);
}

/* ===== RECENT ACTIVITY ===== */
.recent-activity {
    background: white;
    border-radius: var(--radius-xl);
    padding: 20px;
    box-shadow: var(--shadow-md);
    margin-bottom: 25px;
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.activity-header h3 {
    font-size: 1.1rem;
    color: var(--gray-800);
}

.view-all {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.activity-icon.completed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.activity-icon.pending {
    background: rgba(249, 115, 22, 0.1);
    color: var(--accent);
}

.activity-icon.payment {
    background: rgba(6, 182, 212, 0.1);
    color: var(--secondary);
}

.activity-details {
    flex: 1;
    min-width: 0;
}

.activity-details h4 {
    font-size: 0.95rem;
    margin-bottom: 3px;
    color: var(--gray-800);
    white-space: normal;
    word-wrap: break-word;
}

.activity-details p {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--gray-400);
    white-space: nowrap;
}

/* ===== MOBILE RESPONSIVE FIXES ===== */

/* Large Desktop */
@media (min-width: 1400px) {
    .dashboard-main {
        padding: 25px;
    }
}

/* Desktop */
@media (max-width: 1200px) {
    .stats-grid {
        gap: 15px;
    }
}

/* Tablet Landscape */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 220px;
    }
}

/* Tablet Portrait - Sidebar hidden */
@media (max-width: 992px) {
    .dashboard-main {
        margin-left: 0;
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .payment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Large */
@media (max-width: 768px) {
    .dashboard-main {
        padding: 15px;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-title h1 {
        font-size: 1.4rem;
    }
    
    .page-title p {
        font-size: 0.85rem;
    }
    
    .date-filter {
        width: 100%;
    }
    
    .date-filter select {
        width: 100%;
        font-size: 0.85rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-value {
        font-size: 1.8rem;
    }
    
    .upcoming-session-card {
        padding: 20px;
    }
    
    .session-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .session-info h3 {
        font-size: 1.1rem;
    }
    
    .student-name {
        font-size: 1.4rem;
    }
    
    .session-details {
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }
    
    .countdown-timer {
        width: 100%;
        padding: 15px;
    }
    
    .timer-display {
        font-size: 1.8rem;
    }
    
    .charts-row {
        gap: 15px;
    }
    
    .chart-card {
        padding: 15px;
    }
    
    .chart-header h3 {
        font-size: 1rem;
    }
    
    .chart-container {
        height: 200px;
    }
    
    .payment-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .payment-card {
        padding: 15px;
    }
    
    .payment-amount {
        font-size: 1.8rem;
    }
    
    .recent-activity {
        padding: 15px;
    }
    
    .activity-item {
        gap: 10px;
    }
    
    .activity-icon {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    .activity-details h4 {
        font-size: 0.85rem;
    }
    
    .activity-details p {
        font-size: 0.75rem;
    }
    
    .activity-time {
        font-size: 0.7rem;
    }
}

/* Mobile Medium */
@media (max-width: 576px) {
    .dashboard-main {
        padding: 12px;
    }
    
    .page-title h1 {
        font-size: 1.3rem;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-header {
        margin-bottom: 10px;
    }
    
    .stat-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .stat-value {
        font-size: 1.6rem;
    }
    
    .stat-trend {
        font-size: 0.75rem;
    }
    
    .upcoming-session-card {
        padding: 15px;
    }
    
    .student-name {
        font-size: 1.2rem;
    }
    
    .timer-display {
        font-size: 1.5rem;
    }
    
    .timer-unit {
        font-size: 0.7rem;
    }
    
    .chart-card {
        padding: 12px;
    }
    
    .chart-container {
        height: 180px;
    }
    
    .payment-amount {
        font-size: 1.5rem;
    }
    
    .payment-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .activity-item {
        flex-wrap: wrap;
    }
    
    .activity-time {
        margin-left: 52px;
        width: 100%;
    }
}

/* Mobile Small */
@media (max-width: 375px) {
    .dashboard-main {
        padding: 10px;
    }
    
    .page-title h1 {
        font-size: 1.2rem;
    }
    
    .stat-value {
        font-size: 1.4rem;
    }
    
    .student-name {
        font-size: 1.1rem;
    }
    
    .detail-item {
        font-size: 0.8rem;
    }
    
    .timer-display {
        font-size: 1.3rem;
    }
    
    .payment-amount {
        font-size: 1.3rem;
    }
    
    .payment-amount small {
        font-size: 0.8rem;
    }
}

/* Extra Small Devices */
@media (max-width: 320px) {
    .dashboard-main {
        padding: 8px;
    }
    
    .stat-card {
        padding: 10px;
    }
    
    .stat-icon {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
    
    .countdown-timer {
        padding: 10px;
    }
    
    .timer-display {
        font-size: 1.1rem;
    }
}

/* Fix for very small screens */
@media (max-width: 280px) {
    .dashboard-main {
        padding: 5px;
    }
    
    .page-title h1 {
        font-size: 1.1rem;
    }
    
    .page-title p {
        font-size: 0.75rem;
    }
    
    .date-filter {
        padding: 5px 10px;
    }
    
    .date-filter select {
        font-size: 0.75rem;
    }
    
    .stat-value {
        font-size: 1rem;
    }
    
    .student-name {
        font-size: 1rem;
    }
    
    .timer-display {
        font-size: 1rem;
    }
    
    .detail-item {
        font-size: 0.7rem;
    }
}

/* Touch-friendly improvements */
.stat-card,
.payment-card,
.view-all,
.date-filter select {
    -webkit-tap-highlight-color: transparent;
}

.stat-card:active,
.payment-card:active {
    transform: scale(0.98);
}

/* Better scrolling on mobile */
.dashboard-main {
    -webkit-overflow-scrolling: touch;
}