/* ==========================================================================
   IMGCON - ULTRA-MODERN, ADVANCED & FAST APP STYLING
   ========================================================================== */

:root {
    --primary-color: #6366f1; 
    --primary-hover: #4f46e5; 
    --bg-main: #f8fafc; 
    --bg-subtle: #f1f5f9; 
    --card-bg: #ffffff; 
    --card-border: #e5e7eb; 
    --text-dark: #1e293b; 
    --text-light: #475569; 
    --success: #10b981; 
    --danger: #ef4444; 
    --shadow-color: rgba(99, 102, 241, 0.1); 
    --shadow-lg-color: rgba(99, 102, 241, 0.2);
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="dark"] {
    --primary-color: #818cf8; 
    --primary-hover: #a78bfa; 
    --bg-main: #0f172a; 
    --bg-subtle: #1e293b; 
    --card-bg: #111827; 
    --card-border: #374151; 
    --text-dark: #f3f4f6; 
    --text-light: #cbd5e1; 
    --shadow-color: rgba(0, 0, 0, 0.3); 
    --shadow-lg-color: rgba(0, 0, 0, 0.4);
}

/* SMART GPU HARDWARE ACCELERATION & COMPOSITING RULES */
.app-container, .screen, .tool-container, .before-after-container, .toast, .modal-content, .tool-choice-card, .format-card-modern {
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    perspective: 1000px;
    will-change: transform, opacity;
}

/* --- HARDWARE ACCELERATED KEYFRAMES --- */
@keyframes hardwareGradientFlow {
    0% { transform: translate3d(0, 0, 0) rotate(0deg); }
    50% { transform: translate3d(-3%, -3%, 0) rotate(1.5deg); }
    100% { transform: translate3d(3%, 3%, 0) rotate(-1.5deg); }
}

@keyframes shine {
    100% { left: 125%; }
}

@keyframes progressStripes {
    0% { background-position: 0 0; }
    100% { background-position: 40px 0; }
}

@keyframes fadeInUpCustom {
    from {
        opacity: 0;
        transform: translate3d(0, 12px, 0) scale(0.995);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
}

@keyframes heartbeat {
    0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.35); }
    70% { box-shadow: 0 0 0 10px rgba(99, 102, 241, 0); }
    100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

@keyframes textGradientFlow {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* Ultra-Smooth Ambient Gradient Layer */
body::before {
    content: ''; 
    position: fixed; 
    top: -10%; 
    left: -10%; 
    right: -10%; 
    bottom: -10%; 
    z-index: -1;
    background: linear-gradient(-45deg, #e0e7ff, #c7d2fe, #a5b4fc, #818cf8);
    transform: translate3d(0, 0, 0);
    animation: hardwareGradientFlow 22s ease-in-out infinite alternate;
    transition: opacity 0.5s ease;
    will-change: transform;
}

[data-theme="dark"] body::before {
    background: linear-gradient(-45deg, #1e293b, #334155, #0f172a, #312e81);
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; 
    background-color: var(--bg-main); 
    color: var(--text-dark); 
    transition: background-color 0.25s ease, color 0.25s ease; 
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

.app-container { 
    background-color: var(--card-bg); 
    box-shadow: 0 20px 40px -15px var(--shadow-color); 
    border-radius: 1.5rem; 
    border: 1px solid var(--card-border); 
    overflow: hidden; 
    transition: min-height 0.28s cubic-bezier(0.25, 1, 0.5, 1), background-color 0.25s, border-color 0.25s;
}

.screen { 
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.screen:not(.hidden) {
    animation: fadeInUpCustom 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.screen.hidden { 
    position: absolute; 
    top: 0; 
    left: 0; 
    right: 0; 
    opacity: 0; 
    pointer-events: none; 
    transform: translate3d(0, 10px, 0) scale(0.995); 
}

/* ==========================================================================
   BUTTONS & ACTION ELEMENTS
   ========================================================================== */

.upload-button { 
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover)); 
    color: white; 
    padding: 0.85rem 1.75rem; 
    border-radius: 9999px; 
    font-weight: 600; 
    display: inline-flex; 
    align-items: center; 
    gap: 0.5rem; 
    box-shadow: 0 4px 15px -3px var(--shadow-color); 
    transition: var(--transition-smooth);
    overflow: hidden;
    transform: translate3d(0, 0, 0);
}

.upload-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 30%;
    height: 100%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transform: skewX(-25deg);
}

.upload-button:hover::after {
    animation: shine 0.8s ease-in-out;
}

.upload-button:hover { 
    transform: translate3d(0, -2px, 0); 
    box-shadow: 0 8px 25px -5px var(--shadow-lg-color); 
}

.start-btn {
    animation: heartbeat 2.2s infinite;
}

.download-btn { 
    background: linear-gradient(135deg, var(--success), #14b8a6); 
    box-shadow: 0 4px 20px -3px rgba(16, 185, 129, 0.3); 
}

.secondary-btn { 
    background-color: var(--bg-subtle); 
    border: 1px solid var(--card-border); 
    color: var(--text-dark); 
    transition: var(--transition-smooth);
}

.secondary-btn:hover {
    background-color: var(--card-border);
    transform: translate3d(0, -1px, 0);
}

.logo-image {
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}
header a:hover .logo-image {
    transform: scale(1.05) rotate(3deg);
}

#themeToggleBtn i {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
#themeToggleBtn:hover i {
    transform: scale(1.1) rotate(15deg);
}

.quality-value {
    display: inline-block;
    font-variant-numeric: tabular-nums;
    transition: transform 0.1s ease;
}

.drop-zone {
    transition: var(--transition-smooth);
}
.drop-zone:hover {
    border-color: var(--primary-color) !important;
    background-color: rgba(99, 102, 241, 0.02) !important;
}

/* ==========================================================================
   ADVANCED TOOL CHOICE CARDS UI (HOME SCREEN)
   ========================================================================== */

.tool-choice-card { 
    position: relative;
    background-color: var(--card-bg); 
    border: 1px solid var(--card-border); 
    border-radius: 1.5rem; 
    display: block; 
    overflow: hidden;
    z-index: 1;
    transform: translate3d(0, 0, 0);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
                border-color 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
                box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1); 
    will-change: transform, box-shadow, border-color;
    box-shadow: 0 4px 20px -5px rgba(0, 0, 0, 0.05);
}

/* 1. Ambient Glassmorphic Background Glow on Hover */
.tool-choice-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        500px circle at var(--mouse-x, 50%) var(--mouse-y, 0%), 
        rgba(99, 102, 241, 0.08), 
        transparent 60%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: -1;
}

/* 2. Dynamic Top Active Accent Line (3D Reveal) */
.tool-choice-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #a855f7, #06b6d4);
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

/* Card Hover States */
.tool-choice-card:hover { 
    transform: translate3d(0, -6px, 0); 
    border-color: rgba(99, 102, 241, 0.4); 
    box-shadow: 0 20px 35px -10px var(--shadow-lg-color),
                0 0 15px -3px rgba(99, 102, 241, 0.15); 
}

.tool-choice-card:hover::before {
    opacity: 1;
}

.tool-choice-card:hover::after {
    opacity: 1;
    transform: scaleX(1);
}

/* Icon Container Spring Animation */
.tool-icon-box {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                background-color 0.3s ease,
                box-shadow 0.3s ease;
    will-change: transform;
}

.tool-choice-card:hover .tool-icon-box {
    transform: scale(1.12) rotate(6deg);
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.25);
}

/* Badge Glow Micro Interaction */
.tool-badge {
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.tool-choice-card:hover .tool-badge {
    transform: scale(1.05);
}

/* Arrow Slide Animation */
.tool-action-link i {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tool-choice-card:hover .tool-action-link i {
    transform: translate3d(4px, 0, 0);
}

/* ==========================================================================
   ADVANCED IMAGE CONVERTER SCREEN STYLING
   ========================================================================== */

.converter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.format-selector-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}

@media (min-width: 640px) {
    .format-selector-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.format-card-modern {
    position: relative;
    background-color: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: 1.25rem;
    padding: 1rem 0.85rem;
    text-align: center;
    cursor: pointer;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                border-color 0.3s ease,
                box-shadow 0.3s ease,
                background-color 0.3s ease;
    will-change: transform, box-shadow;
    user-select: none;
}

.format-card-modern:hover {
    transform: translate3d(0, -3px, 0);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 10px 20px -5px var(--shadow-color);
}

.format-card-modern.selected {
    border-color: var(--primary-color) !important;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(168, 85, 247, 0.08));
    box-shadow: 0 0 25px -3px rgba(99, 102, 241, 0.25),
                inset 0 0 0 1px var(--primary-color);
    transform: scale(1.02);
}

.format-card-modern .selected-check {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    opacity: 0;
    transform: scale(0.5) rotate(-45deg);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
}

.format-card-modern.selected .selected-check {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.format-card-modern i {
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.format-card-modern:hover i,
.format-card-modern.selected i {
    transform: scale(1.15);
}

/* Preset Buttons */
.preset-btn {
    padding: 0.35rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    border: 1px solid var(--card-border);
    background-color: var(--bg-main);
    color: var(--text-light);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.preset-btn:hover,
.preset-btn.active {
    background-color: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* Format Intelligence Box */
.format-intel-box {
    background: linear-gradient(135deg, var(--bg-subtle), var(--card-bg));
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 0.85rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    transition: var(--transition-smooth);
}

/* Custom Modern Range Slider Track & Thumb */
input[type="range"].quality-slider {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    border-radius: 999px;
    background: var(--bg-main);
    outline: none;
}

input[type="range"].quality-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 3px solid #ffffff;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

input[type="range"].quality-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 6px 16px var(--shadow-lg-color);
}

/* ==========================================================================
   TOAST POPUP & PROGRESS BAR
   ========================================================================== */

.toast { 
    position: fixed; 
    bottom: 2rem; 
    left: 50%; 
    transform: translate3d(-50%, 120px, 0); 
    background-color: var(--card-bg); 
    color: var(--text-dark); 
    padding: 0.85rem 1.5rem; 
    border-radius: 2rem; 
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15); 
    z-index: 1000; 
    border: 1px solid var(--card-border); 
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275); 
    opacity: 0; 
}

.toast.show { 
    transform: translate3d(-50%, 0, 0); 
    opacity: 1; 
}

.progress-bar-container { 
    width: 100%; 
    height: 10px; 
    background-color: var(--bg-subtle); 
    border-radius: 999px; 
    overflow: hidden; 
}

.progress-bar-fill { 
    height: 100%; 
    border-radius: 999px; 
    background: linear-gradient(
        45deg, 
        var(--primary-color) 25%, 
        var(--primary-hover) 25%, 
        var(--primary-hover) 50%, 
        var(--primary-color) 50%, 
        var(--primary-color) 75%, 
        var(--primary-hover) 75%
    ); 
    background-size: 40px 40px;
    animation: progressStripes 1.5s linear infinite;
    transition: width 0.3s ease-out; 
}

[data-theme="dark"] .fa-sun { display: none; }
body:not([data-theme="dark"]) .fa-moon { display: none; }

/* ==========================================================================
   BEFORE-AFTER COMPARISON MODAL & SLIDER SYSTEM
   ========================================================================== */

.before-after-container { 
    position: relative; 
    width: 100%; 
    height: 100%; 
    margin: auto; 
    aspect-ratio: var(--aspect-ratio, 1/1); 
    overflow: hidden; 
    border-radius: 0.75rem; 
    user-select: none; 
    box-shadow: 0 10px 25px -5px var(--shadow-color);
    cursor: grab;
    background-color: #000;
}

.before-after-container:active {
    cursor: grabbing;
}

.comparison-viewport {
    width: 100%;
    height: 100%;
    position: relative;
    transform-origin: center center;
    transition: transform 0.05s ease-out;
}

.comparison-viewport img { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    object-fit: contain; 
    pointer-events: none; 
}

.before-image-clipper { 
    position: absolute; 
    inset: 0; 
    clip-path: inset(0 50% 0 0); 
    transition: clip-path 0.05s ease-out;
}

.before-after-slider { 
    position: absolute; 
    background: #ffffff; 
    z-index: 10; 
    box-shadow: 0 0 8px rgba(0,0,0,0.4);
    transition: left 0.05s ease-out, top 0.05s ease-out;
}

.before-after-container.horizontal-split .before-after-slider {
    top: 0; 
    left: 50%; 
    transform: translate3d(-50%, 0, 0); 
    width: 3px; 
    height: 100%; 
    cursor: ew-resize; 
}

.before-after-container.horizontal-split .before-after-slider::before { 
    content: ''; position: absolute; top: 50%; left: 50%; transform: translate3d(-50%, -50%, 0); 
    width: 36px; height: 36px; border: 2.5px solid white; border-radius: 50%; 
    background: rgba(15, 23, 42, 0.7); backdrop-filter: blur(4px); 
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.before-after-container.horizontal-split .before-after-slider::after { 
    content: '\f337'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: white; 
    position: absolute; top: 50%; left: 50%; transform: translate3d(-50%, -50%, 0); font-size: 14px;
}

.before-after-container.vertical-split .before-image-clipper {
    clip-path: inset(0 0 50% 0);
}

.before-after-container.vertical-split .before-after-slider {
    top: 50%; 
    left: 0; 
    transform: translate3d(0, -50%, 0); 
    width: 100%; 
    height: 3px; 
    cursor: ns-resize; 
}

.before-after-container.vertical-split .before-after-slider::before { 
    content: ''; position: absolute; top: 50%; left: 50%; transform: translate3d(-50%, -50%, 0); 
    width: 36px; height: 36px; border: 2.5px solid white; border-radius: 50%; 
    background: rgba(15, 23, 42, 0.7); backdrop-filter: blur(4px); 
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.before-after-container.vertical-split .before-after-slider::after { 
    content: '\f338'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: white; 
    position: absolute; top: 50%; left: 50%; transform: translate3d(-50%, -50%, 0); font-size: 14px;
}

.results-summary { 
    background-color: var(--bg-subtle); border: 1px solid var(--card-border); padding: 1rem; border-radius: 0.75rem; margin-bottom: 1rem; 
}

.result-card { 
    background-color: var(--card-bg); border: 1px solid var(--card-border); border-radius: 1rem; padding: 1rem; 
    box-shadow: 0 4px 15px -5px var(--shadow-color); transition: var(--transition-smooth); 
}

.result-card:hover { 
    box-shadow: 0 12px 25px -5px var(--shadow-lg-color); transform: translate3d(0, -2px, 0); 
}

/* Modals & Content Pages */
.preview-modal { 
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0,0,0,0.6); 
    backdrop-filter: blur(8px); z-index: 1001; display: flex; align-items: center; justify-content: center; 
    opacity: 0; pointer-events: none; transition: opacity 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); 
}

.preview-modal.show { opacity: 1; pointer-events: auto; }

.modal-content { 
    background-color: var(--card-bg); padding: 1.5rem; border-radius: 1.5rem; max-width: 90vw; max-height: 90vh; 
    display: flex; flex-direction: column; gap: 1rem; transform: scale(0.95); transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); 
}

.preview-modal.show .modal-content { transform: scale(1); }

.content-page { max-width: 800px; margin: 0 auto; line-height: 1.8; }
.content-page h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; border-bottom: 2px solid var(--primary-color); padding-bottom: 0.5rem; }
.content-page h3 { font-size: 1.5rem; font-weight: 600; margin-top: 2rem; margin-bottom: 1rem; }
.content-page p { margin-bottom: 1rem; color: var(--text-light); }

#card-footer { display: none; text-align: center; padding: 1.5rem; margin-top: 2rem; border-top: 1px solid var(--card-border); }

/* ==========================================================================
   SCROLL-TRIGGERED REVEAL & CASCADE WAVE ANIMATION
   ========================================================================== */

.reveal-on-scroll {
    opacity: 0;
    transform: translate3d(0, 40px, 0) scale(0.98);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
    transition-delay: var(--reveal-delay, 0ms);
    backface-visibility: hidden;
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
}

.cascade-group > *:nth-child(1) { --reveal-delay: 50ms; }
.cascade-group > *:nth-child(2) { --reveal-delay: 130ms; }
.cascade-group > *:nth-child(3) { --reveal-delay: 210ms; }
.cascade-group > *:nth-child(4) { --reveal-delay: 290ms; }
.cascade-group > *:nth-child(5) { --reveal-delay: 370ms; }

/* ==========================================================================
   DYNAMIC ROTATING SUBTITLE & HERO TEXT
   ========================================================================== */

.subtitle-rotator-wrapper {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 2.2rem;
    min-width: 280px;
    overflow: hidden;
    vertical-align: middle;
}

.rotating-phrase {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    position: absolute;
    left: 50%;
    transform: translate3d(-50%, 30px, 0);
    opacity: 0;
    white-space: nowrap;
    transition: transform 0.55s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

.rotating-phrase.active {
    transform: translate3d(-50%, 0, 0);
    opacity: 1;
}

.rotating-phrase.exit {
    transform: translate3d(-50%, -30px, 0);
    opacity: 0;
}

.accent-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.55rem;
    border-radius: 9999px;
    font-weight: 800;
    font-size: 0.85em;
    letter-spacing: 0.02em;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.hero-gradient-text {
    background: linear-gradient(
        135deg,
        #4f46e5 0%,
        #9333ea 25%,
        #0d9488 50%,
        #9333ea 75%,
        #4f46e5 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGradientFlow 6s linear infinite;
    display: inline-block;
}

[data-theme="dark"] .hero-gradient-text {
    background: linear-gradient(
        135deg,
        #818cf8 0%,
        #c084fc 25%,
        #2dd4bf 50%,
        #c084fc 75%,
        #818cf8 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 12px rgba(129, 140, 248, 0.25));
}

/* ==========================================================================
   DEMO WIDGET & PWA INSTALL BANNER
   ========================================================================== */

.demo-format-btn {
    color: var(--text-light);
    background: transparent;
    border: none;
    cursor: pointer;
}

.demo-format-btn.active {
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    box-shadow: 0 4px 12px var(--shadow-color);
}

.demo-comparison-container {
    touch-action: none;
    user-select: none;
    cursor: ew-resize;
}

#pwaInstallBanner {
    backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px -10px var(--shadow-color);
}

#pwaInstallBanner.hidden {
    display: none !important;
}
/* ==========================================================================
   BLUE COLOR FOR ALL TOOL TITLES & LINKS
   ========================================================================== */

/* Home Screen Tool Cards Titles */
.tool-choice-card h3 {
    color: #2563eb !important; /* Vibrant Blue for Light Mode */
}

/* Dark Mode Adjustment for Card Titles */
[data-theme="dark"] .tool-choice-card h3 {
    color: #60a5fa !important; /* Soft Bright Blue for Dark Mode */
}

/* Footer Tool Links Blue Color */
#main-footer ul li a[href*="image-"],
#main-footer ul li a[href*="exif-"] {
    color: #2563eb !important;
    font-weight: 600;
}

[data-theme="dark"] #main-footer ul li a[href*="image-"],
[data-theme="dark"] #main-footer ul li a[href*="exif-"] {
    color: #60a5fa !important;
}
/* ==========================================================================
   ADVANCED DROP ZONE & STAGING AREA STYLING
   ========================================================================== */

.drop-zone-modern {
    position: relative;
    background-color: var(--bg-subtle);
    border: 2px dashed var(--card-border);
    border-radius: 2rem;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.35s ease,
                box-shadow 0.35s ease,
                background-color 0.35s ease;
    will-change: transform, border-color, box-shadow;
    transform: translate3d(0, 0, 0);
}

/* Hover & Drag Over Glow Effect */
.drop-zone-modern:hover,
.drop-zone-modern.drag-over {
    border-color: var(--primary-color) !important;
    background-color: rgba(99, 102, 241, 0.04) !important;
    transform: translate3d(0, -4px, 0) scale(1.005);
    box-shadow: 0 20px 40px -15px var(--shadow-color),
                0 0 25px -5px rgba(99, 102, 241, 0.2);
}

/* Ambient Radial Glow */
.drop-zone-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        400px circle at 50% 50%,
        rgba(99, 102, 241, 0.08),
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.drop-zone-modern:hover .drop-zone-glow,
.drop-zone-modern.drag-over .drop-zone-glow {
    opacity: 1;
}

/* Format Pills Strip */
.format-pill {
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-light);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.drop-zone-modern:hover .format-pill {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

/* Drop Icon Spring Animation */
.drop-icon-wrapper i {
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.drop-zone-modern:hover .drop-icon-wrapper i {
    transform: scale(1.15) translateY(-3px);
}

/* TOOL SEO GUIDE & FAQ STYLES */
.tool-seo-guide-container {
    margin-top: 3.5rem;
    padding-top: 2.5rem;
    border-top: 2px dashed var(--card-border);
    text-align: left;
}

.tool-seo-guide-container h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.tool-seo-guide-container h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.tool-seo-guide-container p, 
.tool-seo-guide-container li {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.7;
}

.tool-seo-guide-container ol, 
.tool-seo-guide-container ul {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.tool-seo-guide-container ol { list-style-type: decimal; }
.tool-seo-guide-container ul { list-style-type: disc; }

.tool-guide-badge-grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

@media (min-width: 640px) {
    .tool-guide-badge-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.tool-guide-feature-card {
    background-color: var(--bg-subtle);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.25rem;
    transition: transform 0.25s ease;
}

.tool-guide-feature-card:hover {
    transform: translateY(-2px);
}

.tool-faq-accordion {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    margin-bottom: 0.85rem;
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.tool-faq-accordion summary {
    padding: 1rem 1.25rem;
    font-size: 0.98rem;
    font-weight: 800;
    color: var(--text-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.tool-faq-accordion summary::-webkit-details-marker { display: none; }

.tool-faq-accordion summary::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.tool-faq-accordion[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

.tool-faq-accordion[open] {
    border-color: var(--primary-color);
    box-shadow: 0 6px 16px -4px rgba(99, 102, 241, 0.15);
}

.tool-faq-content {
    padding: 0 1.25rem 1.25rem 1.25rem;
    color: var(--text-light);
    font-size: 0.92rem;
    line-height: 1.65;
    border-top: 1px solid var(--bg-subtle);
    margin-top: 0.25rem;
    padding-top: 0.85rem;
}