/* ==========================================================================
   QR CREATOR 2026 - ULTIMATE MODERN DESIGN SYSTEM
   Supports RTL (Arabic) & LTR (English), Dark/Light Modes, Glassmorphism
   ========================================================================== */

:root {
    --font-ar: 'Tajawal', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-en: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Dark Theme (Default) */
    --bg-main: #090d16;
    --bg-surface: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-card-hover: rgba(31, 41, 55, 0.85);
    --bg-input: #1a2234;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: #6366f1;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.35);
    
    --accent: #06b6d4;
    --accent-hover: #0891b2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --shadow-card: 0 12px 32px -4px rgba(0, 0, 0, 0.4), 0 4px 12px -2px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 25px var(--primary-glow);
    --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(248, 250, 252, 0.95);
    --bg-input: #f8fafc;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-focus: #4f46e5;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-glow: rgba(79, 70, 229, 0.2);
    
    --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.07);
}

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

body {
    font-family: var(--font-ar);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
}

[dir="ltr"] body {
    font-family: var(--font-en);
}

/* Glassmorphism helpers */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
}

/* Header */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(16px);
}

[data-theme="light"] .app-header {
    background: rgba(255, 255, 255, 0.85);
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6366f1, #06b6d4);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.brand-logo-icon svg {
    width: 26px;
    height: 26px;
}

.brand-title {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-badge {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    border-radius: 20px;
    text-transform: uppercase;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
}

.btn-primary-header {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: #fff;
    border: none;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary-header:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

/* App Layout */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 440px;
    gap: 28px;
    align-items: start;
}

@media (max-width: 1080px) {
    .app-container {
        grid-template-columns: 1fr;
    }
}

/* Main Studio Editor */
.studio-main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Navigation Tabs */
.tabs-nav {
    display: flex;
    gap: 8px;
    padding: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    scrollbar-width: none;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 1;
    min-width: 110px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn svg {
    width: 18px;
    height: 18px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px var(--primary-glow);
}

/* Panel Containers */
.editor-panel {
    display: none;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-card);
    animation: fadeIn 0.25s ease-out;
}

.editor-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: 20px;
}

.panel-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Types Grid */
.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.type-card {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.type-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.type-card.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
    border-color: var(--primary);
    box-shadow: 0 0 16px var(--primary-glow);
}

.type-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.type-card.active .type-icon {
    background: var(--primary);
    color: #fff;
}

.type-label {
    font-size: 13px;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
}

/* Dynamic Mode Switcher */
.dynamic-banner {
    margin-top: 24px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.dynamic-info h4 {
    font-size: 15px;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dynamic-info p {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    transition: .3s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
    border-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(21px);
}

/* Form Groups & Inputs */
.form-section {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-control, .select-control, .textarea-control {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

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

.input-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 600px) {
    .input-grid-2 {
        grid-template-columns: 1fr;
    }
}

/* Option Selectors & Radio Buttons */
.style-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
}

.style-option-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
}

.style-option-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.style-option-btn.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

.shape-preview-box {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Color Pickers */
.color-picker-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: var(--radius-md);
}

.color-input-wrapper {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    flex-shrink: 0;
}

.color-input-wrapper input[type="color"] {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    cursor: pointer;
    border: none;
}

.color-hex-text {
    font-family: monospace;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
}

/* Logo Presets Grid */
.logo-presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
    gap: 8px;
    max-height: 190px;
    overflow-y: auto;
    padding-right: 4px;
}

.logo-preset-item {
    aspect-ratio: 1;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 10px;
    transition: var(--transition);
}

.logo-preset-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: scale(1.05);
}

.logo-preset-item.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.2);
    box-shadow: 0 0 12px var(--primary-glow);
}

.logo-preset-item svg {
    width: 100%;
    height: 100%;
}

/* File Upload Zone */
.upload-dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-input);
}

.upload-dropzone:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-dropzone svg {
    width: 36px;
    height: 36px;
    color: var(--primary);
    margin-bottom: 8px;
}

.upload-dropzone p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Preview Column (Sticky) */
.preview-col {
    position: sticky;
    top: 90px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.preview-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.preview-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.preview-badge {
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    display: flex;
    align-items: center;
    gap: 6px;
}

.preview-badge.warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

/* Canvas Display Area */
.qr-canvas-wrapper {
    position: relative;
    width: 320px;
    height: 320px;
    max-width: 100%;
    background: #ffffff;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    margin-bottom: 18px;
    transition: var(--transition);
}

.qr-canvas-wrapper.has-frame {
    background: #f8fafc;
    padding: 16px;
    height: auto;
    min-height: 350px;
    display: flex;
    flex-direction: column;
}

.qr-frame-text {
    font-weight: 800;
    font-size: 14px;
    letter-spacing: 0.5px;
    text-align: center;
    margin-top: 10px;
    text-transform: uppercase;
}

#qrCodeContainer {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

#qrCodeContainer canvas, #qrCodeContainer svg {
    max-width: 100% !important;
    max-height: 100% !important;
    height: auto !important;
}

/* Export Options */
.export-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.resolution-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
}

.res-btn-group {
    display: flex;
    gap: 6px;
}

.res-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-secondary);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.res-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Download Buttons Grid */
.download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.btn-download {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-download svg {
    width: 16px;
    height: 16px;
}

.btn-download:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-download-primary {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: #fff;
    border: none;
    box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-download-primary:hover {
    filter: brightness(1.1);
    color: #fff;
}

.btn-save-library {
    grid-column: span 2;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.btn-save-library:hover {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
}

/* History Modal / Drawer */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.modal-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 850px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    animation: modalScale 0.25s ease-out;
    overflow: hidden;
}

@keyframes modalScale {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 18px;
    font-weight: 800;
}

.modal-body {
    padding: 20px 24px;
    overflow-y: auto;
    flex: 1;
}

.history-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.history-card {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
}

.history-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.history-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.history-thumb {
    width: 80px;
    height: 80px;
    background: #fff;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    padding: 4px;
}

.history-thumb canvas, .history-thumb img {
    max-width: 100%;
    max-height: 100%;
}

.history-actions {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.history-btn {
    flex: 1;
    padding: 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.history-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.history-btn.delete-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: toastSlideIn 0.3s ease-out;
}

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

.toast-success { border-right: 4px solid var(--success); }
.toast-error { border-right: 4px solid var(--danger); }
.toast-info { border-right: 4px solid var(--primary); }

/* Range sliders */
input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}
input[type=range]:focus {
    outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: var(--border-color);
    border-radius: 4px;
}
input[type=range]::-webkit-slider-thumb {
    height: 18px;
    width: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -6px;
    box-shadow: 0 0 8px var(--primary-glow);
}