/* style.css - Gerador de QR Code Pro */
:root {
    /* Colors */
    --primary: #2563eb;       /* Tailwind Blue 600 */
    --primary-hover: #1d4ed8; /* Tailwind Blue 700 */
    --bg-main: #f8fafc;       /* Slate 50 */
    --surface: #ffffff;
    --text-main: #0f172a;     /* Slate 900 */
    --text-muted: #64748b;    /* Slate 500 */
    --border: #e2e8f0;        /* Slate 200 */
    --border-focus: #93c5fd;  /* Blue 300 */
    --danger: #ef4444;        /* Red 500 */
    --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);
    
    /* Layout */
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --font-sans: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Container & Layout */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo i {
    font-size: 2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-main {
    display: flex;
    flex: 1;
    gap: 2rem;
    padding: 2rem;
    height: calc(100vh - 84px);
}

/* Left side: Controls */
.controls-panel {
    flex: 1;
    max-width: 700px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
    padding-right: 0.5rem;
}

/* Scrollbar styles for controls */
.controls-panel::-webkit-scrollbar {
    width: 6px;
}
.controls-panel::-webkit-scrollbar-track {
    background: transparent;
}
.controls-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

/* Type Selector */
.type-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 0.5rem;
    background: var(--surface);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.type-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.type-btn:hover {
    background: var(--bg-main);
    color: var(--text-main);
}

.type-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Accordions */
.accordion-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
}

.accordion-item:hover {
    box-shadow: var(--shadow-md);
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    background: var(--surface);
    user-select: none;
}

.accordion-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
}

.accordion-title i {
    color: var(--primary);
    font-size: 1.25rem;
}

.chevron {
    transition: transform 0.3s ease;
    color: var(--text-muted);
}

.accordion-item.active .chevron {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
    background: var(--surface);
    border-top: 1px solid transparent;
    padding: 0 1.5rem;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
    padding: 1.5rem;
    border-top-color: var(--border);
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.content-form {
    display: none;
    animation: fadeIn 0.3s ease;
}

.content-form.active {
    display: flex;
}

.content-form.active.multi-field {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

input[type="text"],
input[type="url"],
input[type="email"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    transition: all 0.2s ease;
    outline: none;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--border-focus);
}

textarea {
    resize: vertical;
}

/* Multi-field forms */
.multi-field {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.multi-field .field {
    display: flex;
    flex-direction: column;
}

.multi-field .full-width {
    grid-column: span 2;
}

.checkbox-field {
    flex-direction: row !important;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.checkbox-field input {
    width: auto;
    accent-color: var(--primary);
}
.checkbox-field label {
    margin-bottom: 0;
    cursor: pointer;
}


/* Colors */
.color-picker-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-input-wrapper input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
}
.color-input-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}
.color-input-wrapper input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 6px;
}

/* Logo Upload */
.logo-upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    background: var(--bg-main);
}

.logo-upload-area:hover {
    border-color: var(--primary);
    background: #eff6ff; /* Blue 50 */
}

.logo-upload-area i {
    font-size: 2.5rem;
    color: var(--primary);
}

.logo-upload-area span {
    font-weight: 500;
}

.logo-upload-area small {
    color: var(--text-muted);
}

.logo-preview-area {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.logo-preview-area.hidden {
    display: none;
}

.logo-preview-area img {
    max-width: 60px;
    max-height: 60px;
    border-radius: var(--radius-md);
    object-fit: contain;
}

/* Design Section */
.design-section {
    margin-bottom: 1.5rem;
}

.shape-selector, .frame-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.shape-option, .frame-option {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

.shape-option:hover, .frame-option:hover {
    border-color: var(--primary);
}

.shape-option.active, .frame-option.active {
    border-color: var(--primary);
    background-color: #eff6ff;
    color: var(--primary);
}

/* Fake representations of shapes for UI buttons */
.demo-shape {
    width: 24px;
    height: 24px;
    background-color: currentColor;
}
.demo-shape.square { border-radius: 0; }
.demo-shape.dots { border-radius: 50%; }
.demo-shape.rounded { border-radius: 4px; }
.demo-shape.classy { border-radius: 8px 0px 8px 0px; }
.demo-shape.classy-rounded { border-radius: 8px 8px 0px 8px; }
.demo-shape.extra-rounded { border-radius: 10px; }

.demo-eye {
    width: 24px;
    height: 24px;
    border: 4px solid currentColor;
    border-radius: 0;
    position: relative;
}
.demo-eye::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: currentColor;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.demo-eye.square { border-radius: 0; }
.demo-eye.square::after { border-radius: 0; }
.demo-eye.circle { border-radius: 50%; }
.demo-eye.circle::after { border-radius: 50%; }
.demo-eye.rounded { border-radius: 6px; }
.demo-eye.rounded::after { border-radius: 3px; }

/* Fake representations for Frames UI buttons */
.demo-frame {
    width: 24px;
    height: 24px;
    border: 2px solid currentColor;
    position: relative;
    box-sizing: border-box;
    border-radius: 2px;
}

.frame-bottom-demo {
    border-radius: 4px;
    border-bottom-width: 6px;
}
.frame-bottom-demo::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 4px 4px 0;
    border-style: solid;
    border-color: currentColor transparent transparent transparent;
}

.frame-top-demo {
    border-radius: 4px;
    border-top-width: 6px;
}
.frame-top-demo::after {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 4px 4px;
    border-style: solid;
    border-color: transparent transparent currentColor transparent;
}

.frame-border-demo {
    border-radius: 4px;
    border-width: 2px;
    border-top-width: 4px;
}

.frame-border-top-demo {
    border-radius: 4px;
    border-width: 1px;
    border-top-width: 6px;
}

.frame-focus-demo {
    border: none;
    background: 
        linear-gradient(to right, currentColor 2px, transparent 2px) 0 0,
        linear-gradient(to right, currentColor 2px, transparent 2px) 0 100%,
        linear-gradient(to left, currentColor 2px, transparent 2px) 100% 0,
        linear-gradient(to left, currentColor 2px, transparent 2px) 100% 100%,
        linear-gradient(to bottom, currentColor 2px, transparent 2px) 0 0,
        linear-gradient(to bottom, currentColor 2px, transparent 2px) 100% 0,
        linear-gradient(to top, currentColor 2px, transparent 2px) 0 100%,
        linear-gradient(to top, currentColor 2px, transparent 2px) 100% 100%;
    background-repeat: no-repeat;
    background-size: 6px 6px;
}

.frame-badge-demo {
    border-radius: 4px 4px 10px 10px;
    border-width: 2px;
    border-top-width: 4px;
}

.frame-ticket-demo {
    border-width: 2px;
    mask-image: radial-gradient(circle at 0 0, transparent 2px, black 3px),
                radial-gradient(circle at 100% 0, transparent 2px, black 3px),
                radial-gradient(circle at 0 100%, transparent 2px, black 3px),
                radial-gradient(circle at 100% 100%, transparent 2px, black 3px);
    mask-position: top left, top right, bottom left, bottom right;
    mask-size: 51% 51%;
    mask-repeat: no-repeat;
    -webkit-mask-image: radial-gradient(circle at 0 0, transparent 2px, black 3px),
                        radial-gradient(circle at 100% 0, transparent 2px, black 3px),
                        radial-gradient(circle at 0 100%, transparent 2px, black 3px),
                        radial-gradient(circle at 100% 100%, transparent 2px, black 3px);
    -webkit-mask-position: top left, top right, bottom left, bottom right;
    -webkit-mask-size: 51% 51%;
    -webkit-mask-repeat: no-repeat;
}

.frame-polaroid-demo {
    border-width: 1px;
    border-bottom-width: 8px;
    background-color: transparent;
}

.frame-bag-demo {
    border-width: 2px;
    border-top-width: 2px;
    border-radius: 0 0 2px 2px;
    margin-top: 3px;
}
.frame-bag-demo::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 3px;
    border: 1px solid currentColor;
    border-radius: 4px 4px 0 0;
    border-bottom: none;
}

.frame-phone-demo {
    border-radius: 6px;
    border-width: 1px;
    border-top-width: 4px;
    border-bottom-width: 4px;
}

.frame-pin-demo {
    border-radius: 50%;
    border-width: 2px;
}
.frame-pin-demo::after {
    content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%);
    border-width: 5px 3px 0; border-style: solid; border-color: currentColor transparent transparent transparent;
}

.frame-tag-demo {
    border-radius: 6px 6px 2px 2px;
    border-width: 2px;
    border-top-width: 6px;
}
.frame-tag-demo::before {
    content: ''; position: absolute; top: -4px; left: 50%; transform: translateX(-50%);
    width: 2px; height: 2px; background: white; border-radius: 50%;
}

.frame-double-demo {
    border-width: 3px; border-style: double; border-radius: 2px;
}

.frame-stamp-demo {
    border-width: 2px; border-style: dashed; border-radius: 2px;
}

.frame-folder-demo {
    border-width: 2px; border-radius: 0 4px 4px 4px; border-top-width: 4px;
}
.frame-folder-demo::before {
    content: ''; position: absolute; top: -6px; left: -2px; width: 10px; height: 4px;
    border: 2px solid currentColor; border-bottom: none; border-radius: 4px 4px 0 0;
}

.frame-monitor-demo {
    border-radius: 2px; border-width: 2px; border-bottom-width: 4px; margin-top: -2px;
}
.frame-monitor-demo::after {
    content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%);
    width: 8px; height: 2px; background: currentColor;
}

.frame-brackets-demo {
    border: none; border-left: 3px solid currentColor; border-right: 3px solid currentColor; border-radius: 2px;
}
.frame-brackets-demo::before, .frame-brackets-demo::after {
    content: ''; position: absolute; width: 4px; height: 2px; background: currentColor; left: 0;
    box-shadow: 16px 0 currentColor;
}
.frame-brackets-demo::before { top: -2px; }
.frame-brackets-demo::after { bottom: -2px; }


/* Right Side: Preview */
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

.preview-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border);
    position: sticky;
    top: 2rem;
}

.preview-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-main);
}

.qr-container-wrapper {
    background: var(--surface);
    padding: 1rem;
    border-radius: var(--radius-lg);
    box-shadow: inset 0 0 0 1px var(--border);
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 280px;
    height: 280px;
    position: relative; /* Base for Absolute Texts */
    transition: all 0.3s ease;
}

/* Frame Base */
.qr-frame-text {
    display: none;
    position: absolute;
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    width: 100%;
    color: white;
    letter-spacing: 1px;
    z-index: 2;
    font-family: Arial, sans-serif;
    text-transform: uppercase;
}
.frame-active {
    box-shadow: none !important;
    border-radius: 0;
    background: transparent;
}
.frame-active #qrCodeContainer {
    background: white; /* Ensure QR code isn't transparent inside filled frames */
    border-radius: 8px; /* Smooth inner border */
}

/* 1. Bottom Bubble */
.frame-bottom {
    padding: 15px 15px 45px 15px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-bottom::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 15px 15px 0;
    border-style: solid;
    border-color: var(--frame-color, #0f172a) transparent transparent transparent;
}
.frame-bottom .frame-text-bottom { display: block; bottom: 12px; }

/* 2. Top Bubble */
.frame-top {
    padding: 45px 15px 15px 15px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-top::after {
    content: '';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 15px 15px;
    border-style: solid;
    border-color: transparent transparent var(--frame-color, #0f172a) transparent;
}
.frame-top .frame-text-top { display: block; top: 12px; }

/* 3. Border Simple */
.frame-border {
    padding: 45px 15px 15px 15px;
    border: 5px solid var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-border .frame-text-top { display: block; top: 12px; color: var(--frame-color, #0f172a); }

/* 4. Solid Top Border */
.frame-border-top {
    padding: 45px 15px 15px 15px;
    border: 5px solid var(--frame-color, #0f172a);
    border-top: 45px solid var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-border-top .frame-text-top { display: block; top: 12px; color: white; }

/* 5. Focus/Camera Bracket */
.frame-focus {
    padding: 45px 20px 20px 20px;
    background: 
        linear-gradient(to right, var(--frame-color, #0f172a) 4px, transparent 4px) 0 0,
        linear-gradient(to right, var(--frame-color, #0f172a) 4px, transparent 4px) 0 100%,
        linear-gradient(to left, var(--frame-color, #0f172a) 4px, transparent 4px) 100% 0,
        linear-gradient(to left, var(--frame-color, #0f172a) 4px, transparent 4px) 100% 100%,
        linear-gradient(to bottom, var(--frame-color, #0f172a) 4px, transparent 4px) 0 0,
        linear-gradient(to bottom, var(--frame-color, #0f172a) 4px, transparent 4px) 100% 0,
        linear-gradient(to top, var(--frame-color, #0f172a) 4px, transparent 4px) 0 100%,
        linear-gradient(to top, var(--frame-color, #0f172a) 4px, transparent 4px) 100% 100%;
    background-repeat: no-repeat;
    background-size: 30px 30px;
}
.frame-focus .frame-text-top { display: block; top: 12px; color: var(--frame-color, #0f172a); }

/* 6. Badge/Shield */
.frame-badge {
    padding: 45px 20px 30px 20px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 20px 20px 60px 60px;
}
.frame-badge .frame-text-top { display: block; top: 12px; }

/* 7. Ticket */
.frame-ticket {
    padding: 45px 20px 20px 20px;
    background-color: var(--frame-color, #0f172a);
    mask-image: radial-gradient(circle at 0 0, transparent 15px, black 16px),
                radial-gradient(circle at 100% 0, transparent 15px, black 16px),
                radial-gradient(circle at 0 100%, transparent 15px, black 16px),
                radial-gradient(circle at 100% 100%, transparent 15px, black 16px);
    mask-position: top left, top right, bottom left, bottom right;
    mask-size: 51% 51%;
    mask-repeat: no-repeat;
    -webkit-mask-image: radial-gradient(circle at 0 0, transparent 15px, black 16px),
                        radial-gradient(circle at 100% 0, transparent 15px, black 16px),
                        radial-gradient(circle at 0 100%, transparent 15px, black 16px),
                        radial-gradient(circle at 100% 100%, transparent 15px, black 16px);
    -webkit-mask-position: top left, top right, bottom left, bottom right;
    -webkit-mask-size: 51% 51%;
    -webkit-mask-repeat: no-repeat;
}
.frame-ticket .frame-text-top { display: block; top: 12px; }

/* 8. Polaroid */
.frame-polaroid {
    padding: 15px 15px 50px 15px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.frame-polaroid .frame-text-bottom { display: block; bottom: 15px; color: var(--frame-color, #0f172a); }

/* 9. Bag/Shopping Bag */
.frame-bag {
    padding: 30px 15px 15px 15px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 0 0 12px 12px;
    margin-top: 25px; 
}
.frame-bag::before {
    content: '';
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 35px;
    border: 8px solid var(--frame-color, #0f172a);
    border-radius: 40px 40px 0 0;
    border-bottom: none;
}
.frame-bag .frame-text-top { display: block; top: 8px; font-size: 0.9rem; }

/* 10. Phone */
.frame-phone {
    padding: 50px 15px 50px 15px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 35px;
}
.frame-phone::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 5px;
    background: rgba(255,255,255,0.4);
    border-radius: 3px;
}
.frame-phone::after {
    content: '';
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 50%;
}
.frame-phone .frame-text-top { display: block; top: 30px; font-size: 0.85rem; color: rgba(255,255,255,0.9); }

/* 11. Pin/Map Pin */
.frame-pin {
    padding: 30px 20px 50px 20px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 40px;
}
.frame-pin::after {
    content: ''; position: absolute; bottom: -18px; left: 50%; transform: translateX(-50%);
    border-width: 20px 20px 0; border-style: solid; border-color: var(--frame-color, #0f172a) transparent transparent transparent;
}
.frame-pin .frame-text-bottom { display: block; bottom: 15px; }

/* 12. Tag */
.frame-tag {
    padding: 60px 20px 20px 20px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 30px 30px 10px 10px;
}
.frame-tag::before {
    content: ''; position: absolute; top: 15px; left: 50%; transform: translateX(-50%);
    width: 15px; height: 15px; background: var(--surface); border-radius: 50%;
}
.frame-tag .frame-text-top { display: block; top: 35px; }

/* 13. Double Border */
.frame-double {
    padding: 45px 15px 15px 15px;
    border: 8px double var(--frame-color, #0f172a);
    border-radius: 16px;
}
.frame-double .frame-text-top { display: block; top: 12px; color: var(--frame-color, #0f172a); }

/* 14. Stamp */
.frame-stamp {
    padding: 45px 15px 15px 15px;
    background-color: var(--frame-color, #0f172a);
    mask-image: radial-gradient(circle, transparent 4px, black 5px);
    mask-size: 15px 15px;
    mask-position: -5px -5px;
    -webkit-mask-image: radial-gradient(circle, transparent 4px, black 5px);
    -webkit-mask-size: 15px 15px;
    -webkit-mask-position: -5px -5px;
}
.frame-stamp .frame-text-top { display: block; top: 15px; }

/* 15. Folder */
.frame-folder {
    padding: 40px 15px 15px 15px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 0 10px 10px 10px;
    margin-top: 20px;
}
.frame-folder::before {
    content: ''; position: absolute; top: -19px; left: 0; width: 45%; height: 20px;
    background-color: var(--frame-color, #0f172a); border-radius: 10px 10px 0 0;
}
.frame-folder .frame-text-top { display: block; top: 10px; text-align: right; width: 90%; }

/* 16. Monitor */
.frame-monitor {
    padding: 20px 20px 60px 20px;
    background-color: var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-monitor::after {
    content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%);
    width: 60px; height: 15px; background-color: var(--frame-color, #0f172a);
    clip-path: polygon(10% 0, 90% 0, 100% 100%, 0 100%);
}
.frame-monitor .frame-text-bottom { display: block; bottom: 20px; }

/* 17. Brackets */
.frame-brackets {
    padding: 45px 20px 20px 20px;
    border-left: 8px solid var(--frame-color, #0f172a);
    border-right: 8px solid var(--frame-color, #0f172a);
    border-radius: 12px;
}
.frame-brackets::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 8px;
    background: linear-gradient(to right, var(--frame-color, #0f172a) 30px, transparent 30px, transparent calc(100% - 30px), var(--frame-color, #0f172a) calc(100% - 30px));
}
.frame-brackets::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 8px;
    background: linear-gradient(to right, var(--frame-color, #0f172a) 30px, transparent 30px, transparent calc(100% - 30px), var(--frame-color, #0f172a) calc(100% - 30px));
}
.frame-brackets .frame-text-top { display: block; top: 15px; color: var(--frame-color, #0f172a); }

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

/* Fix SVG sizing generated by library */
#qrCodeContainer svg,
#qrCodeContainer canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
    border-radius: 8px;
}

/* Buttons */
.download-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-family: inherit;
}

.btn i {
    font-size: 1.25rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary {
    background: white;
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-main);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-outline:hover {
    color: var(--danger);
    border-color: var(--danger);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon.danger {
    color: var(--danger);
    margin-left: auto;
}

.btn-icon.danger:hover {
    background: #fef2f2;
    border-color: #fca5a5;
}

/* Responsiveness */
@media (max-width: 968px) {
    .app-main {
        flex-direction: column-reverse;
        height: auto;
        padding: 1rem;
        gap: 2rem;
    }

    .controls-panel {
        max-width: 100%;
        overflow-y: visible;
        padding-right: 0;
    }

    .preview-card {
        position: static;
        max-width: 100%;
        padding: 1.5rem;
    }
    
    .type-btn {
        min-width: calc(33.333% - 0.5rem);
    }
}

@media (max-width: 480px) {
    .type-btn {
        min-width: calc(50% - 0.5rem);
    }
    
    .multi-field {
        grid-template-columns: 1fr;
    }
    .multi-field .full-width {
        grid-column: span 1;
    }
}