/* Base styles - ensure proper foundation */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* CSS Variables */
:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --tertiary-bg: #2a2a2a;
    --card-bg: rgba(26, 26, 26, 0.95);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    --accent-color: #00f0ff;
    --accent-secondary: #ff6b6b;
    --accent-tertiary: #ffd43b;
    --accent-success: #51cf66;
    --accent-warning: #ffa500;
    --accent-error: #ff4757;
    --accent-glow: rgba(0, 240, 255, 0.3);
    --accent-glow-strong: rgba(0, 240, 255, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-active: rgba(0, 240, 255, 0.5);
    --border-hover: rgba(255, 255, 255, 0.2);
    --success-color: #00ff88;
    --warning-color: #ffa500;
    --danger-color: #ff4757;
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px var(--accent-glow);
    --shadow-glow-strong: 0 0 50px var(--accent-glow-strong);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 6px;
    width: 100%;
}

/* Navigation responsive fixes */
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-top: 6px;
}

/* Theme Variations */
.light-theme {
    --primary-bg: #ffffff;
    --secondary-bg: #f8f9fa;
    --tertiary-bg: #e9ecef;
    --card-bg: rgba(255, 255, 255, 0.95);
    --glass-bg: rgba(0, 0, 0, 0.05);
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
}

.blue-theme {
    --accent-color: #007bff;
    --accent-secondary: #6610f2;
    --accent-glow: rgba(0, 123, 255, 0.3);
    --accent-glow-strong: rgba(0, 123, 255, 0.6);
}

.purple-theme {
    --accent-color: #6f42c1;
    --accent-secondary: #e83e8c;
    --accent-glow: rgba(111, 66, 193, 0.3);
    --accent-glow-strong: rgba(111, 66, 193, 0.6);
}

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

body {
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Particles Background */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-gradient {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    z-index: 2;
    position: relative;
}

.logo-pulse {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    opacity: 0.2;
    border-radius: inherit;
    animation: logoGlow 2s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.05); }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

.logo-accent {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-divider {
    width: 1px;
    height: 32px;
    background: var(--border-color);
}

.nav-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
}

.breadcrumb-link:hover {
    color: var(--accent-color);
    background: var(--glass-bg);
}

.breadcrumb-separator {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.tool-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tool-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.tool-title-wrapper {
    text-align: center;
}

.tool-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title-icon {
    color: var(--accent-color);
    font-size: 1.25rem;
}

.tool-category {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.nav-right {
    display: flex;
    align-items: center;
}

.nav-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-primary);
}

.action-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
}

.btn-text {
    display: none;
}

.nav-progress {
    height: 2px;
    background: var(--secondary-bg);
    overflow: hidden;
}

.progress-line {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-secondary));
    width: 0%;
    transition: width 0.3s ease;
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 2;
    margin-top: 80px;
    min-height: calc(100vh - 80px);
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Page Header */
.page-header {
    position: relative;
    text-align: center;
    margin-bottom: 4rem;
    padding: 4rem 0;
    overflow: hidden;
}

.header-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.header-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 107, 107, 0.1) 0%, transparent 50%);
    animation: patternFloat 20s ease-in-out infinite;
}

@keyframes patternFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-10px, -10px) rotate(1deg); }
    66% { transform: translate(10px, -5px) rotate(-1deg); }
}

.header-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    animation: headerGlow 3s ease-in-out infinite;
}

@keyframes headerGlow {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
}

.header-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.icon-wrapper {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: var(--border-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    overflow: hidden;
}

.icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    border-radius: inherit;
}

.icon-wrapper i {
    position: relative;
    z-index: 2;
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.icon-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.icon-particles span {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: particleFloat 4s linear infinite;
}

.icon-particles span:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.icon-particles span:nth-child(2) {
    top: 20%;
    right: 20%;
    animation-delay: 1s;
}

.icon-particles span:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 2s;
}

.icon-particles span:nth-child(4) {
    bottom: 20%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes particleFloat {
    0%, 100% { opacity: 0; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-10px); }
}

.header-text {
    text-align: left;
    max-width: 600px;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.title-main {
    color: var(--text-primary);
    display: block;
}

.title-accent {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.page-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.header-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.stat-item i {
    color: var(--accent-color);
    font-size: 1rem;
}

/* Tool Interface */
.tool-interface {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 0.5rem;
}

/* Section Styles */
.input-section,
.output-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

/* Barcode Container and Preview */
.barcode-container {
    position: relative;
    width: 100%;
}

.barcode-preview {
    background: var(--secondary-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.barcode-preview:hover {
    border-color: var(--accent-color);
    background: rgba(0, 240, 255, 0.05);
}

.barcode-canvas {
    max-width: 100%;
    max-height: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-md);
    background: white;
    display: none;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.placeholder-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
    text-align: center;
    user-select: none;
}

.placeholder-text i {
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.7;
    animation: placeholderPulse 2s ease-in-out infinite;
}

.placeholder-text p {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
    color: var(--text-secondary);
}

.placeholder-text span {
    font-size: 0.9rem;
    opacity: 0.8;
}

@keyframes placeholderPulse {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.barcode-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.section-header {
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title i {
    color: var(--accent-color);
}

/* Input Styles */
.input-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-label i {
    color: var(--accent-color);
    font-size: 0.8rem;
}

.input-field {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    font-family: var(--font-primary);
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.select-field {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2300f0ff' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
    appearance: none;
}

.input-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Enhanced Input Styles */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-actions {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 4px;
    z-index: 10;
}

.input-action {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--glass-bg);
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.input-action:hover {
    background: var(--accent-color);
    color: white;
    transform: scale(1.1);
}

.label-badge {
    background: var(--accent-color);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 0.5rem;
    font-weight: 600;
}

.label-info {
    color: var(--text-muted);
    cursor: help;
    margin-left: 0.5rem;
}

.label-info:hover {
    color: var(--accent-color);
}

/* Range Slider Styles */
.range-wrapper {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0.75rem;
    align-items: center;
}

.range-slider {
    appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--secondary-bg);
    outline: none;
    cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(0, 240, 255, 0.2);
}

.range-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.range-input {
    width: 80px;
    text-align: center;
}

.range-unit {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Advanced Options */
.advanced-options {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
}

.options-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    cursor: pointer;
    user-select: none;
}

.options-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    padding: 0.25rem;
    border-radius: 4px;
}

.options-toggle:hover {
    color: var(--accent-color);
    background: var(--glass-bg);
}

.options-toggle.active {
    transform: rotate(180deg);
}

.options-content {
    overflow: hidden;
    transition: var(--transition-slow);
}

.options-content.collapsed {
    max-height: 0;
    opacity: 0;
}

.option-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.option-row:last-child {
    margin-bottom: 0;
}

/* Color Picker Styles */
.color-wrapper {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.color-input {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    background: none;
    overflow: hidden;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
}

.color-text {
    flex: 1;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

/* Enhanced Button Styles */
.primary-btn {
    position: relative;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    font-size: 1.1rem;
    padding: 1.25rem 2.5rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    overflow: hidden;
}

.btn-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-ripple {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    transform: scale(0);
    border-radius: 50%;
    transition: transform 0.6s ease;
}

.primary-btn:active .btn-ripple {
    transform: scale(4);
}

/* Download Section */
.download-section {
    margin-bottom: 2rem;
}

.download-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-title i {
    color: var(--accent-color);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.download-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-secondary);
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
}

.download-btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.download-btn:hover:before {
    left: 100%;
}

.download-btn:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.download-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.download-btn i {
    font-size: 1.5rem;
    transition: var(--transition);
}

.png-btn:hover i { color: #ff6b6b; }
.jpg-btn:hover i { color: #ffd43b; }
.svg-btn:hover i { color: #51cf66; }
.pdf-btn:hover i { color: #74c0fc; }

.btn-info {
    text-align: center;
}

.btn-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    display: block;
}

.btn-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Theme Preview Grid and Enhanced Modal Styling */
.theme-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.theme-card {
    cursor: pointer;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 2px solid var(--border-color);
    background: var(--glass-bg);
    padding: 12px;
}

.theme-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.theme-card.active {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-glow);
}

.theme-preview {
    width: 100%;
    height: 60px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 8px;
    overflow: hidden;
    position: relative;
}

.theme-preview .preview-header {
    height: 15px;
    width: 100%;
}

.theme-preview .preview-content {
    padding: 5px;
    display: flex;
    gap: 3px;
    height: calc(100% - 15px);
}

.theme-preview .preview-box {
    flex: 1;
    border-radius: 2px;
    opacity: 0.7;
}

/* Dark Theme Preview */
.dark-preview {
    background: #0a0a0a;
}

.dark-preview .preview-header {
    background: #1a1a1a;
}

.dark-preview .preview-box {
    background: #00f0ff;
}

/* Light Theme Preview */
.light-preview {
    background: #ffffff;
    border: 1px solid #e0e0e0;
}

.light-preview .preview-header {
    background: #f8f9fa;
}

.light-preview .preview-box {
    background: #007bff;
}

/* Blue Theme Preview */
.blue-preview {
    background: #0a0a0a;
}

.blue-preview .preview-header {
    background: #1a1a1a;
}

.blue-preview .preview-box {
    background: #007bff;
}

/* Purple Theme Preview */
.purple-preview {
    background: #0a0a0a;
}

.purple-preview .preview-header {
    background: #1a1a1a;
}

.purple-preview .preview-box {
    background: #6f42c1;
}

.theme-name {
    text-align: center;
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Error Message */
.error-message {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--danger-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--danger-color);
}

.error-message i {
    font-size: 1.2rem;
}

/* Features Section */
.features-section {
    margin-top: 4rem;
    text-align: center;
}

.features-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    position: relative;
    z-index: 2;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
}

.modal-close:hover {
    color: var(--accent-color);
    background: rgba(0, 240, 255, 0.1);
}

.modal-body {
    padding: 2rem;
}

.help-section {
    margin-bottom: 2rem;
}

.help-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.help-section h4 i {
    color: var(--accent-color);
}

.help-section ol,
.help-section ul {
    padding-left: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.help-section li {
    margin-bottom: 0.5rem;
}

.help-section strong {
    color: var(--text-primary);
}

/* Additional Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    transition: var(--transition);
    opacity: 1;
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.notification.success {
    background: linear-gradient(135deg, var(--accent-success), #45a049);
    border-color: rgba(81, 207, 102, 0.3);
}

.notification.info {
    background: linear-gradient(135deg, var(--accent-color), #0080cc);
    border-color: rgba(0, 240, 255, 0.3);
}

.notification.warning {
    background: linear-gradient(135deg, var(--accent-warning), #e68900);
    border-color: rgba(255, 165, 0, 0.3);
}

.notification.error {
    background: linear-gradient(135deg, var(--accent-error), #e60000);
    border-color: rgba(255, 71, 87, 0.3);
}

.notification i {
    font-size: 1.1rem;
    opacity: 0.9;
}

.notification:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Enhanced Modal Tabs */
.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.modal-tab {
    padding: 12px 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    font-weight: 500;
}

.modal-tab:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
}

.modal-tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: var(--glass-bg);
}

.modal-tab-content {
    display: none;
}

.modal-tab-content.active {
    display: block;
    animation: fadeInUp 0.3s ease;
}

/* Enhanced Settings Styles */
.settings-group {
    margin-bottom: 25px;
}

.settings-group h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.settings-group h4 i {
    color: var(--accent-color);
    font-size: 1rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-label {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

.setting-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.setting-control {
    min-width: 120px;
    text-align: right;
}

.setting-control select {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.setting-control select:hover {
    border-color: var(--border-hover);
}

.setting-control select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
    background: var(--tertiary-bg);
    border-radius: 13px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 2px;
}

.toggle-switch input {
    opacity: 0;
    position: absolute;
    pointer-events: none;
}

.toggle-switch::before {
    content: '';
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    z-index: 1;
}

.toggle-switch.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.toggle-switch.active::before {
    transform: translateX(24px);
    background: white;
}

/* Enhanced Help Content */
.help-section {
    margin-bottom: 30px;
}

.help-section h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-list {
    list-style: none;
    padding: 0;
}

.help-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.help-list li:last-child {
    border-bottom: none;
}

.help-list li i {
    color: var(--accent-color);
    width: 20px;
    text-align: center;
}

.shortcut-key {
    background: var(--tertiary-bg);
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-color);
    border: 1px solid var(--border-color);
    margin-left: auto;
}

/* Enhanced Action Buttons */
.action-buttons {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.action-btn.secondary-btn {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    text-decoration: none;
    backdrop-filter: blur(10px);
}

.action-btn.secondary-btn:hover:not(:disabled) {
    background: var(--accent-color);
    color: var(--primary-bg);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-btn.secondary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.action-btn.secondary-btn i {
    font-size: 0.9rem;
}

/* Enhanced Range Sliders */
.range-container {
    position: relative;
    margin: 15px 0;
}

.range-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--tertiary-bg);
    outline: none;
    opacity: 0.7;
    transition: opacity 0.2s;
    -webkit-appearance: none;
    appearance: none;
}

.range-slider:hover {
    opacity: 1;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: 2px solid var(--primary-bg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.range-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: 2px solid var(--primary-bg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.range-value {
    position: absolute;
    top: -30px;
    right: 0;
    background: var(--accent-color);
    color: var(--primary-bg);
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 40px;
    text-align: center;
}

.range-value::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--accent-color);
}

/* Color Picker Enhancement */
.color-picker-container {
    position: relative;
    display: inline-block;
}

.color-picker {
    width: 60px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    -webkit-appearance: none;
    appearance: none;
    background: none;
}

.color-picker:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
    border: none;
    border-radius: var(--border-radius-sm);
}

.color-picker::-webkit-color-swatch {
    border: none;
    border-radius: var(--border-radius-sm);
}

/* Status Indicator Enhancement */
.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: pulse 2s infinite;
}

.status-indicator.success {
    background: var(--accent-success);
}

.status-indicator.error {
    background: var(--accent-error);
}

.status-indicator.processing {
    background: var(--accent-warning);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

/* Enhanced Responsive Design */
@media (max-width: 1400px) {
    .main-content {
        gap: 4px;
    }
    
    .tool-interface {
        gap: 4px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 12px;
    }
    
    .main-content {
        gap: 4px;
    }
    
    .tool-interface {
        grid-template-columns: 1fr;
        gap: 4px;
    }
    
    .nav-center .tool-title {
        font-size: 1.2rem;
    }
    
    .nav-right .action-buttons {
        gap: 8px;
    }
    
    .input-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .barcode-preview {
        min-height: 180px;
        padding: 0.75rem;
    }
}

@media (max-width: 992px) {
    .nav-container {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .nav-left {
        order: 1;
        flex: 1;
    }
    
    .nav-center {
        order: 3;
        width: 100%;
        margin-top: 10px;
    }
    
    .nav-right {
        order: 2;
    }
    
    .page-header {
        padding: 25px 0;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .header-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
      .main-content {
        gap: 4px;
        margin-top: 8px;
    }
    
    .input-section,
    .output-section {
        padding: 8px;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .barcode-preview {
        min-height: 160px;
        padding: 8px;
    }
    
    .tool-interface {
        gap: 4px;
        margin-bottom: 1rem;
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 10px 15px;
    }
    
    .nav-logo .logo-text {
        font-size: 1.1rem;
    }
    
    .nav-breadcrumb {
        display: none;
    }
    
    .nav-right .action-btn {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    .page-header {
        padding: 15px 0;
    }
    
    .header-content h1 {
        font-size: 1.8rem;
    }
    
    .header-content .subtitle {
        font-size: 1rem;
    }
    
    .header-stats {
        grid-template-columns: 1fr;
        gap: 8px;
    }
      .container {
        padding: 0 6px;
    }
    
    .main-content {
        gap: 4px;
        margin-top: 6px;
    }
    
    .input-section,
    .output-section {
        padding: 6px;
        margin-bottom: 4px;
    }
    
    .section-title {
        font-size: 1.2rem;
    }
    
    .input-group {
        margin-bottom: 15px;
    }
    
    .input-group label {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }
    
    .form-input,
    .form-select,
    .input-field {
        padding: 12px 15px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
      .barcode-preview {
        min-height: 140px;
        padding: 6px;
        margin-bottom: 8px;
    }
    
    .barcode-canvas {
        max-width: 100%;
        height: auto;
    }
    
    .placeholder-text i {
        font-size: 2.5rem;
    }
    
    .placeholder-text p {
        font-size: 1rem;
    }
    
    .placeholder-text span {
        font-size: 0.85rem;
    }
    
    .download-section h4 {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .download-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .download-btn {
        padding: 12px 8px;
        min-height: 70px;
    }
    
    .download-btn i {
        font-size: 1.2rem;
    }
    
    .btn-label {
        font-size: 0.8rem;
    }
    
    .btn-desc {
        font-size: 0.7rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .action-btn.secondary-btn {
        justify-content: center;
        padding: 12px 20px;
        width: 100%;
    }
    
    /* Modal adjustments */
    .modal-content {
        margin: 20px 10px;
        max-height: calc(100vh - 40px);
        width: calc(100% - 20px);
    }
    
    .modal-header h3 {
        font-size: 1.1rem;
    }
    
    .modal-tabs {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .modal-tab {
        flex: 1;
        min-width: 100px;
        padding: 8px 10px;
        font-size: 0.85rem;
    }
    
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 10px 0;
    }
    
    .setting-control {
        width: 100%;
        text-align: left;
    }
    
    .setting-control select {
        width: 100%;
        padding: 10px 12px;
    }
    
    /* Range sliders mobile */
    .range-wrapper {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .range-container {
        margin: 10px 0;
    }
    
    .range-value {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 5px;
        display: inline-block;
    }
    
    .range-value::after {
        display: none;
    }
    
    /* Color picker mobile */
    .color-wrapper {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }
    
    .color-input {
        width: 60px;
        height: 40px;
        align-self: center;
    }
    
    /* Notification mobile */
    .notification {
        left: 10px;
        right: 10px;
        top: 10px;
        font-size: 0.9rem;
        padding: 10px 15px;
    }
    
    /* Input row responsive */
    .input-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .option-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .nav-logo .logo-text .logo-main,
    .nav-logo .logo-text .logo-accent {
        font-size: 1rem;
    }
    
    .nav-right .action-btn {
        padding: 6px 8px;
    }
    
    .nav-right .action-btn span {
        display: none;
    }
    
    .header-content h1 {
        font-size: 1.5rem;
    }
      .container {
        padding: 0 4px;
    }
    
    .main-content {
        gap: 4px;
        margin-top: 4px;
    }
    
    .input-section,
    .output-section {
        padding: 6px;
        margin-bottom: 4px;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    
    .download-btn {
        padding: 12px 8px;
        min-height: 60px;
    }
    
    .modal-content {
        margin: 10px;
        max-height: calc(100vh - 20px);
    }
    
    .modal-tab {
        min-width: 80px;
        padding: 6px 8px;
        font-size: 0.8rem;
    }
    
    .theme-preview-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .theme-card {
        padding: 8px;
    }
    
    .theme-preview {
        height: 40px;
    }
    
    /* Touch-friendly inputs */
    .toggle-switch {
        width: 44px;
        height: 24px;
    }
    
    .toggle-switch::before {
        width: 18px;
        height: 18px;
        top: 2px;
        left: 2px;
    }
    
    .toggle-switch.active::before {
        transform: translateX(20px);
    }
}

/* Landscape phone */
@media (max-width: 896px) and (orientation: landscape) {
    .page-header {
        padding: 10px 0;
    }
    
    .header-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .main-content {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .input-section,
    .output-section {
        padding: 12px;
    }
    
    .modal-content {
        max-height: calc(100vh - 30px);
        overflow-y: auto;
    }
}

/* New breakpoint for large tablets */
@media (max-width: 1024px) and (min-width: 769px) {
    .main-content {
        gap: 14px;
    }
    
    .tool-interface {
        gap: 1rem;
    }
    
    .input-section,
    .output-section {
        padding: 16px;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .barcode-canvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark mode preference */
@media (prefers-color-scheme: dark) {
    :root:not(.light-theme):not(.blue-theme):not(.purple-theme) {
        --primary-bg: #0a0a0a;
        --secondary-bg: #1a1a1a;
        --text-primary: #ffffff;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .particles-js {
        display: none;
    }
}

/* Extra small mobile devices (360px and below) */
@media (max-width: 360px) {    .container {
        padding: 0 4px;
    }
    
    .main-content {
        gap: 4px;
        margin-top: 4px;
    }
    
    .nav-container {
        padding: 6px 8px;
    }
    
    .input-section,
    .output-section {
        padding: 4px;
        margin-bottom: 4px;
    }
    
    .section-title {
        font-size: 1rem;
        margin-bottom: 6px;
    }
    
    .header-content h1 {
        font-size: 1.3rem;
    }
    
    .page-header {
        padding: 6px 0;
    }
    
    .barcode-preview {
        min-height: 120px;
        padding: 4px;
    }
    
    .input-group {
        margin-bottom: 6px;
    }
    
    .form-input,
    .form-select,
    .input-field {
        padding: 8px 10px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .tool-interface {
        margin-bottom: 0.5rem;
        gap: 4px;
    }
}

/* Optimize general spacing across all screen sizes */
@media (max-width: 768px) {
    .tool-interface {
        gap: 8px;
        margin-bottom: 1.5rem;

    }
}
@media (max-width: 480px) {    .tool-interface {
        gap: 4px;
        margin-bottom: 0.5rem;
    }
    
    .input-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .option-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}