/* ========== المتغيرات العامة ========== */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --secondary-dark: #475569;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
    --radius-sm: 0.5rem;
}

/* الوضع الداكن (حسب تفضيل النظام) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f172a;
        --bg-alt: #1e293b;
        --card-bg: #1e293b;
        --text: #f1f5f9;
        --text-light: #94a3b8;
        --border: #334155;
    }
}

/* ========== الحاوية الرئيسية ========== */
[data-tool="generate-pdf"] {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* ========== البطاقة الرئيسية ========== */
[data-tool="generate-pdf"] .card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

[data-tool="generate-pdf"] .card-header {
    padding: 1.25rem 1.5rem;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ========== عناصر التحكم ========== */
[data-tool="generate-pdf"] .controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
}

[data-tool="generate-pdf"] .control-group {
    flex: 1;
    min-width: 150px;
}

[data-tool="generate-pdf"] .control-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

[data-tool="generate-pdf"] .control-input,
[data-tool="generate-pdf"] .control-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.875rem;
    transition: all 0.2s;
}

[data-tool="generate-pdf"] .control-input:focus,
[data-tool="generate-pdf"] .control-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* ========== محرر HTML والمعاينة ========== */
[data-tool="generate-pdf"] .editor-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1.5rem;
}

[data-tool="generate-pdf"] .editor-column {
    flex: 1;
    min-width: 300px;
}

[data-tool="generate-pdf"] .editor-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

[data-tool="generate-pdf"] textarea[data-role="html-editor"] {
    width: 100%;
    height: 400px;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.8rem;
    padding: 1rem;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    resize: vertical;
}

[data-tool="generate-pdf"] [data-role="pdf-preview"] {
    height: 400px;
    overflow: auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

/* ========== أزرار الإجراءات ========== */
[data-tool="generate-pdf"] .action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
}

[data-tool="generate-pdf"] .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

[data-tool="generate-pdf"] .btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

[data-tool="generate-pdf"] .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

[data-tool="generate-pdf"] .btn-secondary {
    background: var(--secondary);
    color: white;
}

[data-tool="generate-pdf"] .btn-secondary:hover {
    background: var(--secondary-dark);
}

/* ========== مؤشر التحميل ========== */
[data-tool="generate-pdf"] .loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid var(--border);
}

[data-tool="generate-pdf"] .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== Toast Notifications ========== */
[data-tool="generate-pdf"] .toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--card-bg);
    color: var(--text);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    opacity: 0;
    transform: translateY(1rem);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1100;
}

[data-tool="generate-pdf"] .toast.show {
    opacity: 1;
    transform: translateY(0);
}

[data-tool="generate-pdf"] .toast.success {
    border-left-color: var(--success);
}

[data-tool="generate-pdf"] .toast.error {
    border-left-color: var(--danger);
}

/* ========== تحسينات للشاشات الصغيرة ========== */
@media (max-width: 768px) {
    [data-tool="generate-pdf"] {
        padding: 1rem;
    }
    [data-tool="generate-pdf"] .controls {
        flex-direction: column;
    }
    [data-tool="generate-pdf"] .editor-container {
        flex-direction: column;
    }
    [data-tool="generate-pdf"] .action-buttons {
        flex-direction: column;
    }
    [data-tool="generate-pdf"] .btn {
        justify-content: center;
    }
}