/**
 * نظام إنشاء الفواتير - ملف الأنماط الرئيسي
 * تصميم احترافي ونظيف مع دعم RTL
 */

/* ===== متغيرات CSS ===== */
:root {
    /* الألوان */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #dbeafe;

    --color-success: #059669;
    --color-success-light: #d1fae5;

    --color-danger: #dc2626;
    --color-danger-light: #fee2e2;

    --color-warning: #d97706;

    /* الألوان المحايدة */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* الخطوط - خط Cairo للعربية */
    --font-family: 'Cairo', 'Segoe UI', Tahoma, Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;

    /* المسافات */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;

    /* الحواف المدورة */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;

    /* الظلال */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* الانتقالات */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
}

/* ===== إعادة التعيين والأساسيات ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-gray-100);
    min-height: 100vh;
}

/* ===== دعم RTL ===== */
[dir="rtl"] .inv-title {
    text-align: left;
}

[dir="rtl"] .inv-details {
    text-align: left;
}

[dir="rtl"] .inv-detail-row {
    justify-content: flex-start;
}

[dir="rtl"] .inv-totals {
    align-items: flex-start;
}

[dir="rtl"] .inv-items th {
    text-align: right;
}

[dir="rtl"] .inv-items th.col-qty,
[dir="rtl"] .inv-items th.col-price,
[dir="rtl"] .inv-items th.col-total {
    text-align: left;
}

[dir="rtl"] .inv-items td.col-qty,
[dir="rtl"] .inv-items td.col-price,
[dir="rtl"] .inv-items td.col-total {
    text-align: left;
}

[dir="rtl"] .service-total {
    justify-content: flex-start;
}

[dir="rtl"] .toast {
    right: auto;
    left: 24px;
}

/* ===== الهيدر ===== */
.header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-3) var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-900);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo svg {
    color: var(--color-primary);
}

/* ===== تخطيط لوحة التحكم ===== */
.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-6);
    min-height: calc(100vh - 60px);
}

@media (max-width: 1200px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
}

/* ===== لوحة النموذج ===== */
.form-panel {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.invoice-form {
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

/* ===== أقسام النموذج ===== */
.form-section {
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-100);
}

.form-section:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-4);
}

.section-title svg {
    color: var(--color-gray-400);
}

/* ===== عناصر النموذج ===== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-4);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
}

.form-group small {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

input[readonly] {
    background-color: var(--color-gray-50);
    color: var(--color-gray-500);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-gray-400);
}

textarea {
    resize: vertical;
    min-height: 60px;
}

/* ===== رفع الشعار ===== */
.logo-upload-area {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.logo-upload-area:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.logo-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-400);
}

.logo-preview span {
    font-size: var(--font-size-sm);
}

.logo-image {
    max-width: 120px;
    max-height: 80px;
    object-fit: contain;
    display: none;
}

.logo-image.visible {
    display: block;
}

.logo-upload-area.has-image .logo-preview {
    display: none;
}

/* ===== قسم الخدمات ===== */
.services-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.service-item {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    position: relative;
}

.service-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-3);
}

.service-item-number {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-gray-500);
}

.btn-remove-service {
    background: none;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.btn-remove-service:hover {
    color: var(--color-danger);
    background-color: var(--color-danger-light);
}

.service-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.service-row-numbers {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-3);
}

.service-total {
    display: flex;
    justify-content: flex-end;
    padding-top: var(--spacing-2);
    border-top: 1px solid var(--color-gray-200);
    font-weight: 600;
    color: var(--color-gray-700);
}

/* ===== قسم المجاميع ===== */
.totals-section {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4) !important;
    margin-top: var(--spacing-4);
    border: none !important;
}

.totals-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.tax-row,
.discount-row {
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.tax-input,
.discount-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.tax-input input,
.discount-input input {
    width: 80px;
}

.final-total {
    padding-top: var(--spacing-3);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
}

/* ===== الأزرار ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn-add {
    width: 100%;
    padding: var(--spacing-3);
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-lg);
}

.btn-add:hover {
    background: var(--color-primary-light);
}

.btn-icon {
    padding: var(--spacing-2);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
}

.btn-icon:hover {
    background: var(--color-gray-50);
    color: var(--color-gray-900);
}

.form-actions {
    display: flex;
    gap: var(--spacing-3);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

.form-actions .btn {
    flex: 1;
}

/* ===== لوحة المعاينة ===== */
.preview-panel {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
}

.preview-header h2 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-gray-800);
}

.preview-container {
    flex: 1;
    overflow: auto;
    padding: var(--spacing-6);
    background: var(--color-gray-100);
}

/* ===== معاينة مستند الفاتورة ===== */
.invoice-preview {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-sm);
    max-width: 100%;
}

.invoice-document {
    padding: 40px;
    min-height: 800px;
}

/* هيدر الفاتورة */
.inv-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--color-gray-200);
}

.inv-company {
    display: flex;
    gap: 16px;
}

.inv-logo {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.inv-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.inv-company-details h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.inv-company-details .business-type {
    font-size: 12px;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.inv-company-details .address,
.inv-company-details .contact {
    font-size: 11px;
    color: var(--color-gray-600);
    white-space: pre-line;
    line-height: 1.6;
}

.inv-title {
    text-align: left;
}

.inv-title h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
}

.inv-title .inv-number {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-top: 4px;
}

/* صف معلومات الفاتورة */
.inv-info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.inv-bill-to h3 {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-gray-500);
    margin-bottom: 8px;
}

.inv-bill-to .client-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-gray-900);
}

.inv-bill-to .client-company {
    font-size: 13px;
    color: var(--color-gray-600);
}

.inv-details {
    text-align: left;
}

.inv-detail-row {
    display: flex;
    justify-content: flex-start;
    gap: 16px;
    font-size: 12px;
    margin-bottom: 4px;
}

.inv-detail-row span:first-child {
    color: var(--color-gray-500);
}

.inv-detail-row span:last-child {
    font-weight: 600;
    color: var(--color-gray-800);
}

/* جدول بنود الفاتورة */
.inv-items {
    margin-bottom: 30px;
}

.inv-items table {
    width: 100%;
    border-collapse: collapse;
}

.inv-items th {
    background: var(--color-gray-800);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    padding: 12px 16px;
    text-align: right;
}

.inv-items th.col-qty,
.inv-items th.col-price,
.inv-items th.col-total {
    text-align: left;
    width: 80px;
}

.inv-items th.col-desc {
    width: 200px;
}

.inv-items td {
    padding: 12px 16px;
    font-size: 12px;
    border-bottom: 1px solid var(--color-gray-200);
    vertical-align: top;
}

.inv-items td.col-qty,
.inv-items td.col-price,
.inv-items td.col-total {
    text-align: left;
}

.inv-items .service-name {
    font-weight: 600;
    color: var(--color-gray-800);
}

.inv-items .service-desc {
    font-size: 11px;
    color: var(--color-gray-500);
}

.inv-items .empty-row td {
    text-align: center;
    color: var(--color-gray-400);
    padding: 40px;
}

/* مجاميع الفاتورة */
.inv-totals {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.inv-total-row {
    display: flex;
    justify-content: space-between;
    width: 280px;
    padding: 8px 0;
    font-size: 13px;
    border-bottom: 1px solid var(--color-gray-100);
}

.inv-total-row span:first-child {
    color: var(--color-gray-600);
}

.inv-total-row span:last-child {
    font-weight: 600;
    color: var(--color-gray-800);
}

.inv-grand-total {
    border-bottom: none;
    border-top: 2px solid var(--color-gray-800);
    margin-top: 8px;
    padding-top: 12px;
}

.inv-grand-total span:first-child {
    font-weight: 700;
    color: var(--color-gray-800);
}

.inv-grand-total span:last-child {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
}

/* ملاحظات الفاتورة */
.inv-notes {
    background: var(--color-gray-50);
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 30px;
}

.inv-notes h3 {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-gray-500);
    margin-bottom: 8px;
}

.inv-notes p {
    font-size: 12px;
    color: var(--color-gray-700);
    white-space: pre-line;
}

.inv-notes:empty,
.inv-notes p:empty {
    display: none;
}

/* صف المجاميع والختم */
.inv-totals-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 30px;
    gap: 20px;
}

/* ختم الفاتورة */
.inv-stamp {
    flex-shrink: 0;
}

.inv-stamp img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    opacity: 0.85;
}

/* فوتر الفاتورة */
.inv-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--color-gray-200);
}

.inv-footer p {
    font-size: 13px;
    color: var(--color-gray-500);
    font-weight: 500;
}

/* ===== إشعار Toast ===== */
.toast {
    position: fixed;
    bottom: 24px;
    left: 24px;
    padding: 12px 24px;
    background: var(--color-gray-800);
    color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

.toast.error {
    background: var(--color-danger);
}

/* ===== شاشة التحميل ===== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-4);
    z-index: 1000;
}

.loading-overlay.show {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== وضع تصدير PDF ===== */
body.pdf-exporting .preview-panel {
    position: static !important;
    max-height: none !important;
    overflow: visible !important;
}

body.pdf-exporting .preview-container {
    overflow: visible !important;
    max-height: none !important;
}

body.pdf-exporting .invoice-preview {
    overflow: visible !important;
}

/* ===== التجاوب ===== */
@media (max-width: 1200px) {
    .preview-panel {
        position: relative;
        top: 0;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .dashboard {
        padding: var(--spacing-4);
    }

    .invoice-form {
        padding: var(--spacing-4);
    }

    .form-actions {
        flex-wrap: wrap;
    }

    .form-actions .btn {
        flex: 1 1 auto;
        min-width: 120px;
    }

    .invoice-document {
        padding: 20px;
    }

    .inv-header {
        flex-direction: column;
        gap: 20px;
    }

    .inv-title {
        text-align: right;
    }

    .inv-info-row {
        flex-direction: column;
        gap: 20px;
    }

    .inv-details {
        text-align: right;
    }

    .inv-detail-row {
        justify-content: flex-start;
    }

    .service-row,
    .service-row-numbers {
        grid-template-columns: 1fr;
    }
}