/* ==========================================================================
   DOCUMENT CONVERTER SUITE - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

:root {
    --bg-dark: #0b0f19;
    --bg-card: rgba(23, 32, 54, 0.65);
    --bg-card-hover: rgba(30, 41, 69, 0.85);
    --card-item-bg: rgba(15, 23, 42, 0.6);
    --card-item-hover: rgba(30, 41, 69, 0.9);
    --icon-box-bg: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(59, 130, 246, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --navbar-bg: rgba(11, 15, 25, 0.85);
    --navbar-link-bg: rgba(255, 255, 255, 0.04);
    --navbar-link-hover: rgba(255, 255, 255, 0.1);
    --dropdown-bg: #0f172a;
    --input-bg: rgba(11, 15, 25, 0.8);
    --input-text: #ffffff;
    --options-panel-bg: rgba(15, 23, 42, 0.6);
    --dropzone-bg: rgba(15, 23, 42, 0.4);
    --dropzone-border: rgba(255, 255, 255, 0.15);
    --footer-bg: rgba(7, 10, 18, 0.95);
    
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-green: #10b981;
    --accent-amber: #f59e0b;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --card-item-bg: #f8fafc;
    --card-item-hover: #ffffff;
    --icon-box-bg: rgba(0, 0, 0, 0.05);
    --border-color: #e2e8f0;
    --border-glow: rgba(59, 130, 246, 0.35);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --navbar-bg: rgba(255, 255, 255, 0.92);
    --navbar-link-bg: rgba(0, 0, 0, 0.04);
    --navbar-link-hover: rgba(59, 130, 246, 0.12);
    --dropdown-bg: #ffffff;
    --input-bg: #ffffff;
    --input-text: #0f172a;
    --options-panel-bg: #f8fafc;
    --dropzone-bg: #f8fafc;
    --dropzone-border: #cbd5e1;
    --footer-bg: #e2e8f0;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    padding-top: 80px;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

/* Background Canvas Container */
.video-bg-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: -3;
    pointer-events: none;
}

.bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.9;
    z-index: -2;
}

.video-overlay {
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: -1;
}

/* Background Glowing Orbs */
.bg-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: -1;
    opacity: 0.25;
}

.orb-1 {
    top: -10%;
    left: 20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #3b82f6 0%, #8b5cf6 100%);
}

.orb-2 {
    bottom: 10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #06b6d4 0%, #3b82f6 100%);
}

.orb-3 {
    top: 40%;
    left: -10%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #ec4899 0%, #8b5cf6 100%);
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.max-w-4xl {
    max-width: 900px;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s ease, border-color 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
}

.navbar.nav-hidden {
    transform: translateY(-100%);
}

.navbar.is-scrolled {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-right-group {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

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

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.logo-icon.sm {
    width: 32px;
    height: 32px;
    font-size: 15px;
    border-radius: var(--radius-sm);
}

.brand-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.highlight {
    color: var(--accent-blue);
}

.brand-badge {
    background: linear-gradient(135deg, var(--accent-amber), #ef4444);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--navbar-link-bg);
    padding: 4px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.nav-link {
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    background: var(--navbar-link-hover);
}

/* Navigation Dropdown Menu System */
.nav-dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.nav-dropdown-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.nav-arrow {
    font-size: 10px;
    margin-left: 2px;
    transition: transform 0.25s ease;
}

.nav-dropdown-wrapper:hover .nav-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: 290px;
    background: var(--dropdown-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: 0 16px 45px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 250;
}

.nav-dropdown-wrapper:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-header {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 6px 10px 8px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 6px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-decoration: none;
}

.dropdown-item:hover {
    background: var(--icon-box-bg);
    transform: translateX(4px);
}

.dropdown-item i {
    font-size: 16px;
    width: 24px;
    text-align: center;
}

.dropdown-item-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.dropdown-item-sub {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.text-amber { color: #f59e0b; }
.text-blue { color: #3b82f6; }
.text-orange { color: #ff7a45; }
.text-green { color: #10b981; }
.text-yellow { color: #eab308; }
.text-cyan { color: #06b6d4; }
.text-purple { color: #a855f7; }

/* ==========================================================================
   HANGING LIGHT BULB THEME SWITCHER (PULL-CORD PHYSICS & GLOW)
   ========================================================================== */
.hanging-bulb-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    z-index: 110;
    margin-left: 8px;
    padding-top: 0px;
}

.ceiling-cap {
    width: 16px;
    height: 6px;
    background: #64748b;
    border-radius: 4px 4px 0 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.pull-cord {
    display: flex;
    flex-direction: column;
    align-items: center;
    transform-origin: top center;
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cord-line {
    width: 2px;
    height: 24px;
    background: linear-gradient(to bottom, #64748b, #94a3b8);
    transition: height 0.2s ease;
}

.bulb-socket {
    width: 14px;
    height: 8px;
    background: linear-gradient(135deg, #d97706, #b45309);
    border-radius: 2px 2px 4px 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.bulb-body {
    position: relative;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -2px;
}

.bulb-filament {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #94a3b8;
    z-index: 2;
    transition: all 0.3s ease;
}

.bulb-icon {
    font-size: 26px;
    color: #64748b;
    transition: all 0.35s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
    z-index: 1;
}

/* Light Mode Bulb Glow */
[data-theme="light"] .bulb-icon {
    color: #facc15;
    filter: drop-shadow(0 0 10px #facc15) drop-shadow(0 0 22px #eab308);
    transform: scale(1.12);
}

[data-theme="light"] .bulb-filament {
    background: #ffffff;
    box-shadow: 0 0 8px #ffffff;
}

.bulb-rays {
    position: absolute;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(250, 204, 21, 0.4) 0%, rgba(234, 179, 8, 0.15) 50%, transparent 70%);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

[data-theme="light"] .bulb-rays {
    opacity: 1;
    animation: bulbPulse 2s infinite alternate;
}

.cord-handle {
    width: 14px;
    height: 10px;
    background: #475569;
    border-radius: 2px 2px 6px 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    color: #cbd5e1;
    margin-top: 2px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    transition: background 0.3s, color 0.3s;
}

[data-theme="light"] .cord-handle {
    background: #eab308;
    color: #0f172a;
}

.bulb-tooltip {
    position: absolute;
    top: 100%;
    right: 0;
    white-space: nowrap;
    background: rgba(15, 23, 42, 0.95);
    color: #f8fafc;
    font-size: 11px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: all 0.25s ease;
    pointer-events: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.12);
}

[data-theme="light"] .bulb-tooltip {
    background: #ffffff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.hanging-bulb-wrapper:hover .bulb-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(12px);
}

/* Elastic Cord Physics Animations */
.hanging-bulb-wrapper.is-pulling .pull-cord {
    transform: translateY(22px) scaleY(1.15);
}

.hanging-bulb-wrapper.is-snapping .pull-cord {
    animation: springSnap 0.5s cubic-bezier(0.36, 0, 0.66, -0.56);
}

@keyframes springSnap {
    0% { transform: translateY(22px); }
    30% { transform: translateY(-10px); }
    50% { transform: translateY(6px); }
    70% { transform: translateY(-3px); }
    100% { transform: translateY(0); }
}

@keyframes bulbPulse {
    0% { transform: scale(0.92); opacity: 0.6; }
    100% { transform: scale(1.15); opacity: 1; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: #fff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

.btn-accent {
    background: var(--btn-bg, var(--accent-purple));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.btn-accent:hover:not(:disabled) {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.btn-accent:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

/* Hero Section */
.hero-section {
    padding: 60px 0 30px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 28px;
}

/* Highlighted CONVERT NOW CTA Button */
.convert-now-wrapper {
    margin: 0 auto 28px;
    display: flex;
    justify-content: center;
}

.btn-convert-now {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 38px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    background-size: 200% 200%;
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.8px;
    border-radius: var(--radius-full);
    border: 2px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.45), 0 0 20px rgba(139, 92, 246, 0.3);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    animation: btnGlowGradient 4s ease infinite alternate;
}

.btn-convert-now:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 14px 40px rgba(59, 130, 246, 0.65), 0 0 30px rgba(236, 72, 153, 0.5);
}

.btn-convert-now i:first-child {
    font-size: 20px;
    color: #facc15;
    filter: drop-shadow(0 0 8px #facc15);
}

.btn-convert-now i:last-child {
    font-size: 14px;
    animation: bounceDownArrow 1.5s infinite;
}

@keyframes bounceDownArrow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

@keyframes btnGlowGradient {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* Search Box */
.search-box-wrapper {
    max-width: 540px;
    margin: 0 auto 28px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 20px;
    color: var(--text-muted);
    font-size: 18px;
}

.search-box input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--input-text);
    font-size: 15px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.search-box input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px var(--border-glow);
    outline: none;
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 22px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover, .tab-btn.active {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
}

/* Converters Section & Dual Column Grid */
.converters-section {
    padding: 40px 0 80px;
}

.dual-column-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
}

.converter-column {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.column-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.column-title-badge {
    display: flex;
    align-items: center;
    gap: 12px;
}

.column-title-badge i {
    font-size: 24px;
}

.column-title-badge h2 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.to-pdf-badge i, .to-pdf-badge h2 {
    color: #60a5fa;
}

.from-pdf-badge i, .from-pdf-badge h2 {
    color: #c084fc;
}

/* Tool Cards List */
.tool-cards-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tool-card-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    background: var(--card-item-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.tool-card-item:hover {
    background: var(--card-item-hover);
    border-color: var(--icon-color, var(--accent-blue));
    transform: translateX(4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.tool-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--icon-box-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--icon-color, var(--accent-blue));
    flex-shrink: 0;
    transition: var(--transition);
}

.tool-card-item:hover .tool-icon-wrapper {
    background: var(--icon-color, var(--accent-blue));
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tool-info {
    flex: 1;
}

.tool-title {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.tool-desc {
    font-size: 13px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-action-arrow {
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.tool-card-item:hover .tool-action-arrow {
    color: var(--icon-color, var(--accent-blue));
    transform: translateX(4px);
}

/* Workbench Tool Page */
.tool-workbench-section {
    padding: 40px 0 80px;
}

.workbench-header {
    margin-bottom: 30px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--accent-blue);
    transform: translateX(-4px);
}

.tool-badge-header {
    display: flex;
    align-items: center;
    gap: 20px;
}

.tool-icon-large {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--icon-color, var(--accent-blue));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.tool-main-title {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 800;
}

.tool-sub-desc {
    color: var(--text-secondary);
    font-size: 15px;
}

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    backdrop-filter: blur(16px);
}

/* Dropzone */
.dropzone-area {
    border: 2px dashed var(--dropzone-border);
    border-radius: var(--radius-lg);
    padding: 50px 30px;
    text-align: center;
    background: var(--dropzone-bg);
    transition: var(--transition);
    cursor: pointer;
}

.dropzone-area:hover, .dropzone-area.drag-over {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.08);
}

.dropzone-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--icon-box-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--icon-color, var(--accent-blue));
    margin: 0 auto 20px;
    transition: var(--transition);
}

.dropzone-area:hover .dropzone-icon {
    transform: scale(1.1);
    background: var(--icon-color, var(--accent-blue));
    color: #fff;
}

.dropzone-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.dropzone-subtitle {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
}

.or-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 24px 0;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
}

.or-divider::before, .or-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.or-divider span {
    padding: 0 16px;
}

.html-textarea {
    width: 100%;
    height: 160px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    color: var(--input-text);
    font-family: monospace;
    font-size: 14px;
    outline: none;
}

.html-textarea:focus {
    border-color: var(--accent-blue);
}

/* File Preview List */
.file-preview-list {
    margin-top: 30px;
}

.preview-heading {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
}

.files-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-item-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: var(--card-item-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.file-item-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.file-item-name {
    font-weight: 600;
    font-size: 14px;
}

.file-item-size {
    color: var(--text-muted);
    font-size: 12px;
}

.remove-file-btn {
    background: none;
    color: #ef4444;
    font-size: 16px;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.remove-file-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.workbench-actions {
    margin-top: 30px;
    display: flex;
    justify-content: center;
}

/* Progress Bar */
.progress-wrapper {
    margin-top: 30px;
}

.progress-bar-container {
    width: 100%;
    height: 10px;
    background: var(--icon-box-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    transition: width 0.3s ease;
}

.progress-status-text {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 10px;
}

/* Result Box & Converted File Card */
.result-success-box {
    text-align: center;
    padding: 36px 24px;
    margin-top: 30px;
    background: var(--bg-card);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.15);
    animation: fadeInResult 0.4s ease-out;
}

@keyframes fadeInResult {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.success-icon-wrapper {
    margin-bottom: 14px;
}

.success-icon {
    font-size: 56px;
    color: var(--accent-green);
    display: inline-block;
    filter: drop-shadow(0 0 12px rgba(16, 185, 129, 0.5));
    animation: bounceSuccess 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes bounceSuccess {
    0% { transform: scale(0.4); }
    70% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.result-title {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.result-subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 22px;
}

/* Converted File Card */
.converted-file-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--card-item-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    max-width: 480px;
    margin: 0 auto 24px;
    color: var(--text-primary);
}
    margin: 0 auto 28px;
    text-align: left;
}

.file-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.file-card-details {
    flex: 1;
    min-width: 0;
}

.converted-filename {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.file-status-sub {
    font-size: 12px;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 2px;
}

/* Download Action Group */
.download-action-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.download-main-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    font-size: 16px;
    font-weight: 700;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.download-main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.6);
}

.download-main-btn i {
    font-size: 18px;
}

.convert-another-btn {
    padding: 14px 24px;
    font-size: 15px;
}

/* Mini Tools Grid */
.other-tools-section {
    margin-top: 60px;
}

.other-tools-section h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.mini-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}

.mini-tool-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 13px;
    transition: var(--transition);
}

.mini-tool-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    background: var(--bg-card-hover);
}

/* Features Section */
.features-section {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.feature-icon {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
}

.feature-card h4 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ==========================================================================
   ORGANIZED & PROFESSIONAL FOOTER SYSTEM
   ========================================================================== */
.footer {
    margin-top: auto;
    background: var(--footer-bg);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.footer-top-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col-brand .footer-logo {
    margin-bottom: 14px;
}

.footer-bio {
    color: var(--text-secondary);
    font-size: 13.5px;
    line-height: 1.6;
    margin-bottom: 18px;
    max-width: 320px;
}

.footer-trust-badges {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.trust-badge {
    background: var(--icon-box-bg);
    color: var(--accent-blue);
    border: 1px solid var(--border-color);
    font-size: 11.5px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.2px;
}

.footer-heading i {
    color: var(--accent-blue);
    font-size: 13px;
}

.footer-link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-link-list a {
    color: var(--text-secondary);
    font-size: 13.5px;
    transition: var(--transition);
    display: inline-block;
}

.footer-link-list a:hover {
    color: var(--accent-blue);
    transform: translateX(4px);
}

.format-pills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.format-pill {
    background: var(--icon-box-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.format-pill:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.format-note {
    color: var(--text-muted);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.format-note i {
    color: var(--accent-green);
}

.footer-bottom-bar {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.copyright-text {
    color: var(--text-muted);
    font-size: 13px;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-sub-link {
    color: var(--text-muted);
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Toast Alerts */
.toast-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    animation: toastIn 0.3s ease;
}

.toast-error {
    border-color: rgba(239, 68, 68, 0.4);
    background: rgba(239, 68, 68, 0.15);
}

.toast-info {
    border-color: rgba(59, 130, 246, 0.4);
    background: var(--bg-card);
    color: var(--text-primary);
}

.toast-info i {
    color: var(--accent-blue);
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .dual-column-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 34px;
    }
}

/* Universal Header Theme Button & Badge */
.header-theme-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header-theme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: var(--icon-box-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    outline: none;
    flex-shrink: 0;
}

.header-theme-btn:hover {
    transform: translateY(-2px) scale(1.05);
    border-color: var(--accent-blue);
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
}

.header-theme-btn:active {
    transform: scale(0.92);
}

/* Icon visibility based on theme */
[data-theme="dark"] .header-theme-btn .icon-moon { display: none !important; }
[data-theme="dark"] .header-theme-btn .icon-sun { display: inline-block !important; color: #ffc53d; }
[data-theme="light"] .header-theme-btn .icon-sun { display: none !important; }
[data-theme="light"] .header-theme-btn .icon-moon { display: inline-block !important; color: #1677ff; }

/* Sub-Badge directly below Theme Toggle Button */
.theme-badge-hint {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 11px;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
    z-index: 100;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.theme-badge-hint.fade-out {
    opacity: 0 !important;
    transform: translateY(-4px) !important;
    pointer-events: none !important;
}

.hanging-bulb-wrapper {
    display: none !important;
}

@media (max-width: 768px) {
    html, body {
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden !important;
        padding-top: 72px;
    }

    .container {
        width: 100% !important;
        max-width: 100% !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
        box-sizing: border-box !important;
    }

    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        padding: 12px 0;
        height: 72px;
        overflow: visible;
        width: 100%;
        max-width: 100vw;
        box-sizing: border-box;
    }

    .nav-container {
        padding: 0 16px;
        width: 100%;
        max-width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        box-sizing: border-box;
    }

    .brand-logo {
        gap: 10px;
    }

    .logo-icon {
        width: 42px;
        height: 42px;
        font-size: 19px;
    }

    .brand-name {
        font-size: 20px;
        font-weight: 800;
    }

    .brand-badge {
        font-size: 10px;
        padding: 2px 7px;
    }

    .nav-right-group {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-left: auto;
        position: relative;
    }

    .nav-links {
        display: none !important;
    }

    .header-theme-btn {
        width: 44px;
        height: 44px;
        font-size: 19px;
    }

    .theme-badge-hint {
        font-size: 10.5px;
        padding: 3px 8px;
    }

    /* Hero Section Mobile Width & Alignment Fixes */
    .hero-section {
        padding: 28px 0 20px;
        width: 100%;
        max-width: 100vw;
        box-sizing: border-box;
        overflow: hidden;
    }

    .hero-title {
        font-size: 24px;
        padding: 0 8px;
        line-height: 1.25;
        text-align: center;
    }

    .hero-subtitle {
        font-size: 13.5px;
        padding: 0 8px;
        margin-bottom: 20px;
        text-align: center;
    }

    .convert-now-wrapper {
        width: 100%;
        padding: 0 16px;
        box-sizing: border-box;
        margin-bottom: 20px;
    }

    .btn-convert-now {
        width: 100%;
        max-width: 100%;
        padding: 13px 20px;
        font-size: 15px;
        justify-content: center;
        gap: 10px;
        box-sizing: border-box;
    }

    .search-box-wrapper {
        width: 100%;
        padding: 0 16px;
        box-sizing: border-box;
        margin-bottom: 20px;
    }

    .search-box input {
        padding: 12px 16px 12px 44px;
        font-size: 13.5px;
        width: 100%;
        box-sizing: border-box;
    }

    .search-icon {
        left: 16px;
        font-size: 15px;
    }

    .filter-tabs {
        width: 100%;
        max-width: 100vw;
        padding: 4px 16px 12px;
        box-sizing: border-box;
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

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

    .tab-btn {
        flex-shrink: 0;
        font-size: 13px;
        padding: 8px 16px;
    }

    .category-sections-wrapper {
        gap: 20px;
        width: 100%;
        box-sizing: border-box;
    }

    .category-block {
        padding: 16px 14px;
        width: 100%;
        box-sizing: border-box;
    }

    .category-name {
        font-size: 17px;
    }

    .category-count-pill {
        font-size: 11px;
        padding: 2px 8px;
    }

    .category-tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        width: 100%;
    }

    .tool-card-item {
        width: 100%;
        padding: 14px 14px;
        gap: 12px;
        box-sizing: border-box;
    }

    .tool-icon-wrapper {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .tool-title {
        font-size: 15px;
    }

    .tool-desc {
        font-size: 12px;
    }

    .glass-card {
        padding: 20px 14px;
    }

    .dropzone-area {
        padding: 28px 14px;
    }

    .select-file-btn {
        width: 100%;
        min-height: 48px;
    }

    .tool-badge-header {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .tool-main-title {
        font-size: 22px;
    }

    .tool-sub-desc {
        font-size: 13px;
    }

    /* Result Box Mobile Optimization */
    .result-success-box {
        padding: 20px 14px;
        margin-top: 20px;
    }

    .result-title {
        font-size: 20px;
    }

    .result-subtitle {
        font-size: 13.5px;
        margin-bottom: 16px;
    }

    .converted-file-card {
        padding: 12px 14px;
        gap: 12px;
        margin-bottom: 18px;
    }

    .file-card-icon {
        width: 38px;
        height: 38px;
        font-size: 18px;
    }

    .converted-filename {
        font-size: 13.5px;
    }

    .download-action-group {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

    .download-action-group .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
        font-size: 15px;
        min-height: 48px;
        border-radius: var(--radius-md);
    }

    /* Footer Mobile Alignment Fixes (Stack 4 columns into 1 clean column) */
    .footer {
        padding: 36px 0 24px;
        width: 100%;
        box-sizing: border-box;
    }

    .footer-top-grid {
        grid-template-columns: 1fr !important;
        gap: 28px !important;
        margin-bottom: 30px !important;
    }

    .footer-bio {
        max-width: 100% !important;
    }

    .footer-bottom-bar {
        flex-direction: column !important;
        text-align: center !important;
        gap: 14px !important;
        align-items: center !important;
        justify-content: center !important;
    }

    .footer-bottom-links {
        justify-content: center !important;
        flex-wrap: wrap !important;
        gap: 12px !important;
    }

    .toast-container {
        bottom: 16px !important;
        left: 16px !important;
        right: 16px !important;
        width: auto !important;
    }

    .toast {
        width: 100% !important;
        box-sizing: border-box !important;
    }
}

/* Spacious Clean Category Sections Layout */
.category-sections-wrapper {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.category-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: var(--transition);
}

.category-block-header {
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

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

.category-accent-bar {
    width: 4px;
    height: 22px;
    border-radius: 2px;
    background: var(--accent-blue);
}

.organize-badge .category-accent-bar { background: #ff4d4f; }
.optimize-badge .category-accent-bar { background: #52c41a; }
.to_pdf-badge .category-accent-bar { background: #ffc53d; }
.from_pdf-badge .category-accent-bar { background: #1677ff; }
.edit-badge .category-accent-bar { background: #9254de; }
.security-badge .category-accent-bar { background: #1890ff; }
.intelligence-badge .category-accent-bar { background: #eb2f96; }

.category-name {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.category-count-pill {
    background: var(--icon-box-bg);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    margin-left: auto;
}

.category-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 16px;
}

@media (max-width: 768px) {
    .category-block {
        padding: 18px 16px;
    }
    .category-tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

.organize-badge h2 { color: #ff4d4f; }
.optimize-badge h2 { color: #52c41a; }
.to_pdf-badge h2 { color: #ffc53d; }
.from_pdf-badge h2 { color: #1677ff; }
.edit-badge h2 { color: #9254de; }
.security-badge h2 { color: #1890ff; }
.intelligence-badge h2 { color: #eb2f96; }

/* Tool Options Panel */
.tool-options-panel {
    margin: 24px 0;
    padding: 20px;
    background: var(--options-panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

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

.option-field-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--input-text);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--border-glow);
}

.form-select option {
    background: var(--input-bg);
    color: var(--input-text);
}

.field-help {
    font-size: 12px;
    color: var(--text-muted);
}

/* Hide Install App button on Desktop screens */
@media (min-width: 769px) {
    #pwaInstallBtn, .pwa-btn {
        display: none !important;
    }
}