/* ==================== Variables ==================== */
.qr-app {
    --qr-bg-primary: #f8fafc;
    --qr-bg-secondary: #ffffff;
    --qr-bg-tertiary: #f1f5f9;
    --qr-bg-hover: #e2e8f0;
    --qr-text-primary: #0f172a;
    --qr-text-secondary: #64748b;
    --qr-text-muted: #94a3b8;
    --qr-accent: #06b6d4;
    --qr-accent-hover: #0891b2;
    --qr-accent-light: rgba(6, 182, 212, 0.12);
    --qr-accent-glow: rgba(6, 182, 212, 0.28);
    --qr-border: #e2e8f0;
    --qr-border-hover: #cbd5e1;
    --qr-success: #10b981;
    --qr-warning: #f59e0b;
    --qr-error: #ef4444;
    --qr-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --qr-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --qr-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --qr-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --qr-radius: 16px;
    --qr-radius-md: 12px;
    --qr-radius-sm: 8px;
    --qr-transition: all 0.2s ease;
    --qr-transition-slow: all 0.3s ease;
}

body.dark-mode .qr-app {
    --qr-bg-primary: #0a0a0f;
    --qr-bg-secondary: #12121a;
    --qr-bg-tertiary: #1a1a25;
    --qr-bg-hover: #252532;
    --qr-text-primary: #f1f5f9;
    --qr-text-secondary: #94a3b8;
    --qr-text-muted: #64748b;
    --qr-accent: #22d3ee;
    --qr-accent-hover: #06b6d4;
    --qr-accent-light: rgba(34, 211, 238, 0.2);
    --qr-accent-glow: rgba(34, 211, 238, 0.35);
    --qr-border: #1e1e2a;
    --qr-border-hover: #2a2a3a;
    --qr-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --qr-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --qr-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --qr-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* ==================== Base ==================== */
.qr-app {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 1280px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--qr-text-primary);
    line-height: 1.5;
    background: var(--qr-bg-primary);
    border-radius: var(--qr-radius);
    overflow: hidden;
    box-shadow: var(--qr-shadow-lg);
}

.qr-app *,
.qr-app *::before,
.qr-app *::after {
    box-sizing: border-box;
}

/* ==================== Main Layout ==================== */
.qr-app .qr-main {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* ==================== Sidebar ==================== */
.qr-app .qr-sidebar {
    width: 480px;
    flex-shrink: 0;
    background: var(--qr-bg-secondary);
    border-right: 1px solid var(--qr-border);
    padding: 24px;
    transition: var(--qr-transition-slow);
}

/* ==================== Preview Area ==================== */
.qr-app .qr-preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--qr-bg-primary);
}

/* ==================== Section Styles ==================== */
.qr-app .section {
    margin-bottom: 30px;
}

.qr-app .section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    cursor: pointer;
    user-select: none;
}

.qr-app .section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--qr-text-secondary);
}

.qr-app .section-title svg {
    width: 18px;
    height: 18px;
    color: var(--qr-accent);
}

.qr-app .section-toggle {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--qr-transition);
}

.qr-app .section-toggle svg {
    width: 16px;
    height: 16px;
    color: var(--qr-text-muted);
    transition: var(--qr-transition);
}

.qr-app .section.collapsed .section-toggle svg {
    transform: rotate(-90deg);
}

.qr-app .section.collapsed .section-body {
    display: none;
}

.qr-app .section-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==================== Form Elements ==================== */
.qr-app .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.qr-app .form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--qr-text-secondary);
}

.qr-app .form-input {
    width: 100%;
    padding: 12px 14px;
    font-size: 14px;
    font-family: inherit;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius-sm);
    background: var(--qr-bg-tertiary);
    color: var(--qr-text-primary);
    outline: none;
    transition: var(--qr-transition);
}

.qr-app .form-input::placeholder {
    color: var(--qr-text-muted);
}

.qr-app .form-input:focus {
    border-color: var(--qr-accent);
    background: var(--qr-bg-secondary);
    box-shadow: 0 0 0 3px var(--qr-accent-light);
}

.qr-app .form-input-lg {
    padding: 14px 16px;
    font-size: 15px;
}

/* ==================== Color Picker ==================== */
.qr-app .color-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Florimont quick access button */
.florimont-fab {
    position: fixed;
    right: 18px;
    bottom: 18px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    text-decoration: none;
    color: #ffffff;
    background: #06b6d4;
    box-shadow: 0 6px 14px rgba(6, 182, 212, 0.35);
    z-index: 60;
    transition: transform 0.16s ease, background-color 0.16s ease;
}

.florimont-fab:hover,
.florimont-fab:focus-visible {
    background: #0891b2;
    transform: translateY(-1px);
}

body.dark-mode .florimont-fab {
    background: #22d3ee;
    box-shadow: 0 6px 14px rgba(34, 211, 238, 0.28);
}

body.dark-mode .florimont-fab:hover,
body.dark-mode .florimont-fab:focus-visible {
    background: #06b6d4;
}

@media (max-width: 48rem) {
    .florimont-fab {
        right: 14px;
        bottom: 14px;
        width: 40px;
        height: 40px;
    }
}

.qr-app .color-picker-wrapper {
    position: relative;
    flex: 1;
}

.qr-app .color-picker-btn {
    width: 100%;
    height: 44px;
    border-radius: var(--qr-radius-sm);
    border: 1px solid var(--qr-border);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--qr-transition);
}

.qr-app .color-picker-btn:hover {
    border-color: var(--qr-border-hover);
}

.qr-app .color-picker-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    pointer-events: none;
}

.qr-app .color-picker-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 1;
}

.qr-app .color-value {
    width: 90px;
    text-align: center;
    font-family: monospace;
    font-size: 13px;
    text-transform: uppercase;
}

/* ==================== Toggle ==================== */
.qr-app .toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: var(--qr-bg-tertiary);
    border-radius: var(--qr-radius-sm);
    cursor: pointer;
    transition: var(--qr-transition);
}

.qr-app .toggle-row:hover {
    background: var(--qr-bg-hover);
}

.qr-app .toggle-label {
    font-size: 14px;
    font-weight: 500;
}

.qr-app .toggle {
    width: 44px;
    height: 24px;
    background: var(--qr-border);
    border-radius: 12px;
    position: relative;
    transition: var(--qr-transition);
}

.qr-app .toggle::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: var(--qr-transition);
    box-shadow: var(--qr-shadow-sm);
}

.qr-app .toggle.active {
    background: var(--qr-accent);
}

.qr-app .toggle.active::after {
    left: 23px;
}

/* ==================== Select / Dropdown ==================== */
.qr-app .select-wrapper {
    position: relative;
}

.qr-app .select-wrapper::after {
    content: '';
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--qr-text-muted);
    pointer-events: none;
}

.qr-app .form-select {
    width: 100%;
    padding: 12px 14px;
    padding-right: 36px;
    font-size: 14px;
    font-family: inherit;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius-sm);
    background: var(--qr-bg-tertiary);
    color: var(--qr-text-primary);
    outline: none;
    cursor: pointer;
    appearance: none;
    transition: var(--qr-transition);
}

.qr-app .form-select:focus {
    border-color: var(--qr-accent);
    box-shadow: 0 0 0 3px var(--qr-accent-light);
}

/* ==================== Range Slider ==================== */
.qr-app .range-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.qr-app #frameOptions {
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin-top: 4px;
}

.qr-app #frameOptions .form-group {
    gap: 10px;
}

.qr-app #frameOptions .range-wrapper {
    gap: 12px;
}

.qr-app .range-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.qr-app .range-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--qr-accent);
    background: var(--qr-accent-light);
    padding: 2px 8px;
    border-radius: 4px;
}

.qr-app .form-range {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--qr-bg-hover);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.qr-app .form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--qr-accent);
    cursor: pointer;
    box-shadow: 0 2px 6px var(--qr-accent-glow);
    transition: var(--qr-transition);
}

.qr-app .form-range::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

/* ==================== Shape Selector ==================== */
.qr-app .shape-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.qr-app .shape-option {
    width: 92%;
    justify-self: center;
    aspect-ratio: 1.35 / 1;
    border: 1.5px solid var(--qr-border);
    border-radius: var(--qr-radius-sm);
    background: var(--qr-bg-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--qr-transition);
    position: relative;
}

.qr-app .shape-option:hover {
    border-color: var(--qr-border-hover);
    background: var(--qr-bg-hover);
}

.qr-app .shape-option.active {
    border-color: var(--qr-accent);
    background: var(--qr-accent-light);
}

.qr-app .shape-option svg {
    width: 20px;
    height: 20px;
    color: var(--qr-text-secondary);
}

.qr-app .shape-option.active svg {
    color: var(--qr-accent);
}

/* ==================== File Upload ==================== */
.qr-app .file-upload {
    border: 2px dashed var(--qr-border);
    border-radius: var(--qr-radius-md);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--qr-transition);
    position: relative;
    overflow: hidden;
}

.qr-app .file-upload:hover {
    border-color: var(--qr-accent);
    background: var(--qr-accent-light);
}

.qr-app .file-upload.has-file {
    border-style: solid;
    border-color: var(--qr-success);
    background: rgba(16, 185, 129, 0.1);
}

.qr-app .file-upload.has-file input {
    pointer-events: none;
}

.qr-app .file-upload input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.qr-app .file-upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    color: var(--qr-text-muted);
}

.qr-app .file-upload-text {
    font-size: 14px;
    color: var(--qr-text-secondary);
}

.qr-app .file-upload-hint {
    font-size: 12px;
    color: var(--qr-text-muted);
    margin-top: 4px;
}

.qr-app .file-preview {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.qr-app .file-upload.has-file .file-upload-default {
    display: none;
}

.qr-app .file-upload.has-file .file-preview {
    display: flex;
}

.qr-app .file-preview img {
    max-width: 80px;
    max-height: 80px;
    border-radius: var(--qr-radius-sm);
}

.qr-app .file-remove-btn {
    position: absolute;
    right: 10px;
    bottom: 10px;
    width: 28px;
    height: 28px;
    border: 1px solid var(--qr-border);
    border-radius: 50%;
    background: var(--qr-bg-secondary);
    color: var(--qr-text-secondary);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--qr-transition);
    box-shadow: var(--qr-shadow-sm);
}

.qr-app .file-remove-btn:hover {
    border-color: var(--qr-border-hover);
    background: var(--qr-bg-hover);
    color: var(--qr-text-primary);
}

.qr-app .file-upload.has-file .file-remove-btn {
    display: inline-flex;
}

.qr-app .file-remove-btn i {
    font-size: 12px;
}

.qr-app .logo-presets {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.qr-app .logo-preset-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.qr-app .logo-preset-btn {
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius-sm);
    background: var(--qr-bg-tertiary);
    color: var(--qr-text-secondary);
    padding: 8px 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    cursor: pointer;
    transition: var(--qr-transition);
}

.qr-app .logo-preset-btn:hover {
    border-color: var(--qr-border-hover);
    background: var(--qr-bg-hover);
}

.qr-app .logo-preset-btn.active {
    border-color: var(--qr-accent);
    background: var(--qr-accent-light);
    color: var(--qr-accent);
}

.qr-app .logo-preset-btn img {
    width: 28px;
    height: 28px;
    display: block;
    background: #ffffff;
    border-radius: 6px;
    padding: 2px;
}

/* ==================== Preview Card ==================== */
.qr-app .qr-preview-card {
    background: var(--qr-bg-secondary);
    border-radius: var(--qr-radius);
    padding: 28px;
    box-shadow: var(--qr-shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 500px;
    width: min(500px, 100%);
}

.qr-app .qr-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-app .qr-frame {
    padding: 12px 12px 8px;
    border-radius: var(--qr-radius-md);
    display: inline-block;
}

.qr-app .qr-frame-label {
    position: static;
    background: var(--qr-accent);
    color: white;
    padding: 5px 14px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    margin-top: 4px;
    display: inline-block;
}

.qr-app #qrCanvas {
    display: block;
    border-radius: var(--qr-radius-sm);
    max-width: 360px;
    max-height: 360px;
}

.qr-app .preview-placeholder {
    width: 300px;
    height: 300px;
    background: var(--qr-bg-tertiary);
    border-radius: var(--qr-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--qr-text-muted);
}

.qr-app .preview-placeholder svg {
    width: 48px;
    height: 48px;
    opacity: 0.5;
}

.qr-app .preview-placeholder p {
    font-size: 13px;
    text-align: center;
    padding: 0 16px;
}

/* ==================== Buttons ==================== */
.qr-app .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--qr-radius-sm);
    cursor: pointer;
    transition: var(--qr-transition);
}

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

.qr-app .btn-primary {
    background: linear-gradient(135deg, var(--qr-accent), #0ea5e9);
    color: white;
    box-shadow: 0 4px 14px var(--qr-accent-glow);
}

.qr-app .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--qr-accent-glow);
}

.qr-app .btn-secondary {
    background: var(--qr-bg-tertiary);
    color: var(--qr-text-primary);
    border: 1px solid var(--qr-border);
}

.qr-app .btn-secondary:hover {
    background: var(--qr-bg-hover);
    border-color: var(--qr-border-hover);
}

.qr-app .btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.qr-app .btn-block {
    width: 100%;
}

.qr-app .btn-group {
    display: flex;
    gap: 12px;
    width: 100%;
}

.qr-app .btn-group .btn {
    flex: 1;
}

/* ==================== Download Options ==================== */
.qr-app .download-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.qr-app .filename-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 10px;
}

.qr-app .filename-group .form-input {
    text-align: center;
    padding: 10px 12px;
    font-size: 14px;
}

.qr-app .download-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.qr-app .download-options .btn {
    padding: 10px 16px;
    font-size: 13px;
}

/* ==================== Divider ==================== */
.qr-app .divider {
    height: 1px;
    background: var(--qr-border);
    margin: 20px 0 24px;
}

/* ==================== Gradient Types ==================== */
.qr-app .gradient-type-row {
    display: flex;
    gap: 8px;
}

.qr-app .gradient-type-btn {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius-sm);
    background: var(--qr-bg-tertiary);
    color: var(--qr-text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--qr-transition);
}

.qr-app .gradient-type-btn:hover {
    background: var(--qr-bg-hover);
}

.qr-app .gradient-type-btn.active {
    border-color: var(--qr-accent);
    background: var(--qr-accent-light);
    color: var(--qr-accent);
}

/* ==================== Hidden ==================== */
.qr-app .hidden {
    display: none !important;
}

/* ==================== Animations ==================== */
@keyframes qr-fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.qr-app .fade-in {
    animation: qr-fadeIn 0.3s ease;
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .qr-app .qr-sidebar {
        width: 420px;
    }
}

@media (max-width: 800px) {
    .qr-app {
        border-radius: 0 0 28px 28px;
        box-shadow: var(--qr-shadow-xl);
        background: var(--qr-bg-secondary);
    }

    .qr-app .qr-main {
        flex-direction: column;
    }

    .qr-app .qr-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--qr-border);
        padding-bottom: 18px;
    }

    .qr-app .qr-preview-area {
        padding: 24px;
        background: transparent;
        border-radius: 0;
    }

    .qr-app .qr-preview-card {
        max-width: 100%;
        flex-direction: row;
        gap: 20px;
        align-items: center;
        justify-content: center;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        padding: 0;
    }

    .qr-app .qr-container {
        flex-shrink: 0;
        margin: 0 auto;
    }

    .qr-app .download-options {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .qr-app {
        border-radius: 0 0 24px 24px;
    }

    .qr-app .qr-sidebar {
        padding: 16px;
        padding-bottom: 14px;
    }

    .qr-app .qr-preview-area {
        padding: 18px 14px 22px;
        border-radius: 0;
    }

    .qr-app .qr-preview-card {
        flex-direction: column;
        padding: 0;
        border-radius: 0;
        box-shadow: none;
        align-items: center;
        justify-content: center;
    }

    .qr-app .shape-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px;
    }

    .qr-app .shape-option {
        width: 90%;
        aspect-ratio: 1.3 / 1;
    }
}