* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4a90e2;
    --primary-dark: #357abd;
    --success: #52c41a;
    --danger: #ff4d4f;
    --warning: #faad14;
    --info: #1890ff;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --border: #e1e8ed;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    direction: rtl;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

header h1 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 28px;
    text-align: center;
}

.main-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-link {
    padding: 12px 24px;
    background: var(--bg);
    color: var(--text);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    font-weight: 500;
    border: 2px solid transparent;
}

.nav-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary-dark);
}

/* X-Menu Slider على الحاسبة */
@media (min-width: 1024px) {
    body {
        padding-right: 286px;
    }

    .container {
        max-width: none;
        margin: 0;
        padding: 20px 24px;
    }

    .main-nav {
        position: fixed;
        top: 14px;
        right: 14px;
        bottom: 14px;
        width: 260px;
        z-index: 1200;
        display: flex;
        flex-direction: column;
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: 8px;
        padding: 14px 10px 12px;
        overflow-y: auto;
        background: linear-gradient(180deg, #0f4f87 0%, #0b3e6b 100%);
        border-radius: 16px;
        box-shadow: 0 16px 34px rgba(11, 62, 107, 0.35);
    }

    .main-nav::before {
        content: "القائمة الرئيسية";
        display: block;
        margin-bottom: 8px;
        padding: 10px 12px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.14);
        color: #fff;
        font-size: 13px;
        font-weight: 700;
        text-align: center;
        letter-spacing: 0.3px;
    }

    .main-nav .nav-link {
        display: block;
        width: 100%;
        text-align: right;
        padding: 10px 12px;
        border-radius: 10px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        background: rgba(255, 255, 255, 0.1);
        color: #fff;
        font-size: 14px;
        font-weight: 700;
        transition: all 0.2s ease;
    }

    .main-nav .nav-link:hover {
        background: rgba(255, 255, 255, 0.22);
        color: #fff;
        border-color: rgba(255, 255, 255, 0.36);
        transform: translateX(-3px);
    }

    .main-nav .nav-link.active {
        background: #fff;
        color: #0f4f87;
        border-color: #fff;
        box-shadow: 0 6px 20px rgba(10, 44, 78, 0.25);
    }
}

/* X-Menu Slider على التابلت/النقال */
@media (max-width: 1023px) {
    .main-nav {
        display: flex;
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: 8px;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 10px;
        margin-top: 8px;
        border-radius: 12px;
        background: linear-gradient(90deg, #0f4f87 0%, #0b3e6b 100%);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }

    .main-nav .nav-link {
        flex: 0 0 auto;
        min-width: 120px;
        text-align: center;
        padding: 10px 14px;
        border-radius: 10px;
        border: 1px solid rgba(255, 255, 255, 0.25);
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        font-size: 13px;
        font-weight: 700;
        white-space: nowrap;
    }

    .main-nav .nav-link:hover {
        background: rgba(255, 255, 255, 0.22);
        color: #fff;
        transform: none;
    }

    .main-nav .nav-link.active {
        background: #fff;
        color: #0f4f87;
        border-color: #fff;
        box-shadow: 0 6px 14px rgba(10, 44, 78, 0.25);
    }
}

.page {
    display: none;
    animation: fadeIn 0.3s;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card h2, .card h3 {
    margin-bottom: 20px;
    color: var(--primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #389e0d;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #cf1322;
}

.btn-info {
    background: var(--info);
    color: white;
}

.btn-info:hover {
    background: #096dd9;
}

.btn-secondary {
    background: var(--text-light);
    color: white;
}

.btn-secondary:hover {
    background: #5a6c7d;
}

/* بطاقة الطالب */
.card-preview {
    margin-top: 30px;
}

.student-card {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e8ba3 100%);
    color: white;
    padding: 25px;
    border-radius: 16px;
    max-width: 400px;
    margin: 20px auto;
    box-shadow: var(--shadow-hover);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

.student-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255,255,255,0.3);
}

.card-school-name {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.95);
    margin-bottom: 12px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 8px;
}

.card-header h3 {
    margin: 0 0 10px 0;
    font-size: 24px;
    color: white;
}

.card-header span {
    background: rgba(255,255,255,0.3);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.card-barcode {
    margin: 20px 0;
    background: white;
    padding: 15px;
    border-radius: 8px;
}

.card-barcode svg {
    max-width: 100%;
    height: auto;
}

.card-footer {
    margin-top: 15px;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 2px;
}

.card-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* معلومات الطالب */
.student-info {
    background: var(--bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.student-info h3 {
    color: var(--primary);
    margin-bottom: 10px;
}

.balance {
    font-size: 20px;
    font-weight: 600;
    color: var(--success);
    margin-top: 10px;
}

/* الجداول */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.data-table thead {
    background: var(--primary);
    color: white;
}

.data-table th {
    padding: 15px;
    text-align: right;
    font-weight: 600;
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr {
    transition: background 0.2s;
}

.data-table tbody tr:hover {
    background: var(--bg);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table td.positive {
    color: var(--success);
    font-weight: 600;
}

.data-table td.zero {
    color: var(--text-light);
}

/* التقارير */
.reports-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

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

.tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary-dark);
}

.report-tab {
    display: none;
}

.report-tab.active {
    display: block;
}

.report-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

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

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary-dark);
}

/* طباعة البطاقات */
@media print {
    body * {
        visibility: hidden;
    }
    
    .print-area, .print-area * {
        visibility: visible;
    }
    
    .print-area {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
    
    .cards-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        page-break-inside: avoid;
    }
    
    .student-card {
        page-break-inside: avoid;
        margin: 0;
    }
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

/* رسائل النجاح والخطأ */
.message {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    animation: slideDown 0.3s;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.success {
    background: #f6ffed;
    border: 1px solid var(--success);
    color: #389e0d;
}

.message.error {
    background: #fff2f0;
    border: 1px solid var(--danger);
    color: #cf1322;
}

/* صفحة الصرف الجديدة */
.purchase-page {
    position: relative;
    min-height: 70vh;
    border-radius: 16px;
    background: linear-gradient(180deg, #f6fbff 0%, #eef5fc 100%);
    padding: 12px;
}

.purchase-step {
    display: none;
    animation: fadeIn 0.3s;
}

.purchase-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.purchase-card {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
    text-align: center;
    border: 1px solid #cfe2f5;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 14px 40px rgba(25, 82, 135, 0.14);
}

.amount-input-container {
    position: relative;
    margin: 30px 0;
}

.amount-input {
    width: 100%;
    padding: 25px 20px;
    font-size: 48px;
    font-weight: bold;
    text-align: center;
    border: 3px solid var(--primary);
    border-radius: 12px;
    background: #f8fbff;
    color: var(--text);
    direction: ltr;
    box-shadow: inset 0 2px 10px rgba(74, 144, 226, 0.08);
}

.amount-currency {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--text-light);
    font-weight: normal;
}

.number-pad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 30px 0;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.num-btn {
    padding: 25px;
    font-size: 32px;
    font-weight: bold;
    border: 2px solid #dbe6f2;
    border-radius: 12px;
    background: white;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    min-height: 80px;
}

.num-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: scale(1.03);
}

.num-btn:active {
    transform: scale(0.95);
}

.num-btn-clear {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.num-btn-clear:hover {
    background: #d32f2f;
}

.quick-amount-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    max-width: 520px;
    margin: 0 auto 20px;
}

.quick-amount-btn {
    min-height: 72px;
    border: 2px solid var(--primary);
    border-radius: 12px;
    background: #f3f8fd;
    color: var(--primary);
    font-size: 28px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.quick-amount-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.quick-amount-or {
    color: #666;
    font-size: 14px;
    margin: 6px 0 10px;
}

.barcode-input-container {
    margin: 30px 0;
}

.barcode-input {
    width: 100%;
    padding: 20px;
    font-size: 24px;
    text-align: center;
    border: 3px solid var(--primary);
    border-radius: 12px;
    background: #f8fbff;
    color: var(--text);
    direction: ltr;
    letter-spacing: 3px;
    box-shadow: inset 0 2px 10px rgba(74, 144, 226, 0.08);
}

.barcode-input:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.barcode-methods {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}

.barcode-methods-label {
    color: #666;
    font-size: 14px;
}

.btn-camera {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font-size: 18px;
    border-radius: 12px;
    border: 2px solid var(--primary);
    background: rgba(74, 144, 226, 0.08);
    color: var(--primary);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.btn-camera:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-1px);
}

.btn-camera:active {
    transform: scale(0.98);
}

.btn-camera-icon {
    font-size: 22px;
}

/* نافذة الكاميرا لمسح الباركود */
.camera-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    animation: cameraModalFade 0.25s ease;
}

@keyframes cameraModalFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

.camera-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
}

.camera-modal-box {
    position: relative;
    background: white;
    border-radius: 16px;
    padding: 20px;
    max-width: 100%;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.camera-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 15px;
}

.camera-modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--text);
}

.camera-modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: #f0f0f0;
    border-radius: 50%;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: #666;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.camera-modal-close:hover {
    background: #e0e0e0;
}

.camera-reader {
    width: 100%;
    max-width: 400px;
    min-height: 280px;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    margin-bottom: 12px;
}

.camera-reader video {
    width: 100%;
    height: auto;
    display: block;
}

.camera-modal-hint {
    margin: 0 0 15px;
    font-size: 13px;
    color: #888;
}

.btn-large {
    padding: 18px 40px;
    font-size: 20px;
    margin-top: 20px;
    width: 100%;
    max-width: 300px;
    border-radius: 14px;
    box-shadow: 0 10px 25px rgba(74, 144, 226, 0.22);
}

.btn-large:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.daily-total-line {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
    color: #2c3e50;
}

.daily-ops-summary {
    display: flex;
    gap: 18px;
    margin-bottom: 14px;
    font-size: 18px;
    font-weight: 700;
}

/* إشعار الصرف */
.purchase-notification {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: notificationFadeIn 0.3s;
}

.purchase-notification.success {
    background: rgba(82, 196, 26, 0.95);
}

.purchase-notification.error {
    background: rgba(255, 77, 79, 0.95);
}

@keyframes notificationFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.notification-content {
    text-align: center;
    color: white;
    padding: 40px;
}

.notification-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.notification-content p {
    font-size: 32px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

/* تأثيرات الشاشة الكاملة */
.purchase-page.screen-success {
    background: rgba(82, 196, 26, 0.1);
    transition: background 0.3s;
}

.purchase-page.screen-error {
    background: rgba(255, 77, 79, 0.1);
    transition: background 0.3s;
}

/* تحسينات للجوال */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .main-nav {
        gap: 6px;
        padding: 8px;
    }
    
    .main-nav .nav-link {
        min-width: 108px;
        font-size: 12px;
        padding: 9px 12px;
    }
    
    .card-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .data-table {
        font-size: 14px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px;
    }
    
    .purchase-card {
        padding: 20px;
    }
    
    .amount-input {
        font-size: 36px;
        padding: 20px 15px;
    }
    
    .num-btn {
        padding: 20px;
        font-size: 28px;
        min-height: 70px;
    }
    
    .number-pad {
        gap: 10px;
    }
    
    .notification-content h2 {
        font-size: 36px;
    }
    
    .notification-content p {
        font-size: 24px;
    }
}