/*
 * Emerald QR Studio — style.css
 * Developed by Haris Ahmad | HFK Corporation
 * (c) 2026 HFK Corporation. All rights reserved.
 */

:root {
    --bg-primary: #06060f;
    --bg-secondary: #0d0d23;
    --bg-card: rgba(15, 15, 40, 0.7);
    --border-card: rgba(255, 255, 255, 0.06);
    --text-primary: #f0f0f5;
    --text-secondary: #8888aa;
    --text-muted: #555577;
    --accent-1: #10b981;
    --accent-2: #34d399;
    --accent-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);
    --accent-glow: rgba(16, 185, 129, 0.3);
    --success: #00e676;
    --danger: #ff4466;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(16, 185, 129, 0.15);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ===== Background ambient glow and grid ===== */
body::before {
    content: '';
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ===== Top Nav ===== */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 12px 0;
    background: rgba(6, 6, 15, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-card);
}

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

.nav-logo {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-btn {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.auth-btn {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}

.auth-btn:hover {
    background: rgba(255, 255, 255, 0.12);
}

.upgrade-btn {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 3px 12px var(--accent-glow);
}

.upgrade-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.nav-btn-sm {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    background: rgba(255, 68, 68, 0.15);
    color: #ff6b6b;
    border: 1px solid rgba(255, 68, 68, 0.2);
    font-family: var(--font);
    transition: all 0.2s ease;
}

.nav-btn-sm:hover {
    background: rgba(255, 68, 68, 0.25);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 500;
}

.plan-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.8px;
}

.plan-badge.free {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.plan-badge.pro {
    background: var(--accent-gradient);
    color: #fff;
}

/* ===== Pro Tag Badge ===== */
.pro-tag {
    display: inline-block;
    padding: 1px 6px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    border-radius: 3px;
    letter-spacing: 0.5px;
    vertical-align: middle;
    margin-left: 6px;
}

/* ===== Feature Locks ===== */
.tab.locked,
.style-btn.locked,
.download-btn.locked {
    opacity: 0.45;
    position: relative;
    cursor: pointer;
}

.tab.locked::after,
.style-btn.locked::after {
    content: '\1F512';
    font-size: 0.6rem;
    position: absolute;
    top: -4px;
    right: -4px;
}

.locked-section {
    opacity: 0.4;
    pointer-events: none;
    position: relative;
}

/* ===== Auth Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    width: 100%;
    max-width: 400px;
    padding: 36px;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
}

.modal h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-form label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.auth-form input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.auth-form input:focus {
    border-color: var(--accent-1);
}

.auth-error {
    color: #ff4444;
    font-size: 0.82rem;
    min-height: 1.2em;
    text-align: center;
}

.auth-submit {
    width: 100%;
    padding: 13px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.auth-switch {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--accent-2);
    text-decoration: none;
    font-weight: 600;
}

/* ===== Pricing ===== */
.pricing-section {
    padding: 60px 20px 80px;
    text-align: center;
}

.pricing-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.pricing-subtitle {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 1rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.pricing-card {
    padding: 36px 28px;
    text-align: left;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--accent-1);
    box-shadow: 0 0 40px var(--accent-glow);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gradient);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.pricing-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-card li {
    padding: 5px 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.pricing-btn {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.pricing-btn.free {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}

.pricing-btn.pro {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.pricing-btn.pro:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

@media (max-width: 600px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .nav-inner {
        flex-wrap: wrap;
        gap: 8px;
    }
    .nav-logo {
        font-size: 1rem;
    }
}

/* ===== Hero ===== */
.hero {
    text-align: center;
    padding: 60px 20px 30px;
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(16,185,129,0.15) 0%, rgba(52,211,153,0.05) 50%, transparent 80%);
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-2);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    animation: fadeInDown 0.6s ease;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 12px;
    animation: fadeInUp 0.6s ease;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

/* ===== App Layout ===== */
.app-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    padding-bottom: 60px;
    align-items: start;
}

/* ===== Premium Glass Cards ===== */
.glass-card {
    background: linear-gradient(145deg, rgba(20, 20, 35, 0.6), rgba(10, 10, 25, 0.4));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 30px;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45), inset 0 2px 20px rgba(255, 255, 255, 0.02);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.glass-card:hover {
    border-color: rgba(16, 185, 129, 0.25);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5), inset 0 2px 20px rgba(16, 185, 129, 0.05);
    transform: translateY(-2px);
}

.panel-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 22px;
    color: var(--text-primary);
}

/* ===== Tabs ===== */
.tab-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.tab {
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    background: rgba(20, 20, 35, 0.5);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab:hover {
    border-color: var(--accent-1);
    color: var(--text-primary);
}

.tab.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ===== Inputs ===== */
.input-group {
    display: none;
    flex-direction: column;
    gap: 10px;
}

.input-group.active {
    display: flex;
}

.input-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.input-group input,
.input-group textarea,
.input-group select {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition);
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    background: rgba(255, 255, 255, 0.06);
}

.input-group textarea {
    resize: vertical;
    min-height: 80px;
}

.input-group select {
    cursor: pointer;
}

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

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

.section-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

/* ===== Colors ===== */
.color-row {
    display: flex;
    gap: 20px;
}

.contrast-warning {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(255, 193, 7, 0.12);
    border: 1px solid rgba(255, 193, 7, 0.3);
    color: #ffc107;
    animation: fadeInUp 0.3s ease;
}

.contrast-warning.critical {
    background: rgba(255, 68, 68, 0.12);
    border-color: rgba(255, 68, 68, 0.4);
    color: #ff4444;
}

.contrast-warning span {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.color-pick {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.color-pick label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.color-pick input[type="color"] {
    width: 100%;
    height: 44px;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
    padding: 3px;
    transition: border-color var(--transition);
}

.color-pick input[type="color"]:hover {
    border-color: var(--accent-1);
}

/* ===== Style Buttons ===== */
.style-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.style-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.style-btn:hover {
    border-color: var(--accent-1);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.style-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ===== Logo Upload ===== */
.logo-upload {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border: 2px dashed rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.9rem;
}

.upload-btn:hover {
    border-color: var(--accent-1);
    background: rgba(16, 185, 129, 0.05);
    color: var(--text-primary);
}

.upload-btn.has-logo {
    border-color: var(--success);
    color: var(--success);
    border-style: solid;
}

.upload-icon {
    font-size: 1.3rem;
}

.remove-logo-btn {
    padding: 8px 16px;
    border: 1px solid var(--danger);
    border-radius: var(--radius-sm);
    background: rgba(255, 68, 102, 0.1);
    color: var(--danger);
    font-family: var(--font);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
}

.remove-logo-btn:hover {
    background: rgba(255, 68, 102, 0.2);
}

/* ===== Size Slider ===== */
.size-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.08);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-gradient);
    cursor: pointer;
    box-shadow: 0 2px 10px var(--accent-glow);
    transition: transform 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.size-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-align: center;
    font-weight: 500;
}

/* ===== Preview Panel ===== */
.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 20px;
}

.qr-preview-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    padding: 30px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 4px 15px rgba(0, 0, 0, 0.3);
    animation: float 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.qr-loader {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 25, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 12px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.qr-loader span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-2);
    letter-spacing: 1px;
    animation: pulse 1.5s infinite;
}

.qr-preview-wrapper.is-loading .qr-loader {
    opacity: 1;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(16, 185, 129, 0.2);
    border-top-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

.qr-canvas {
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.qr-canvas canvas,
.qr-canvas svg {
    border-radius: var(--radius-sm);
    max-width: 100%;
    height: auto;
}

/* ===== Download Buttons ===== */
.download-buttons {
    display: flex;
    gap: 12px;
}

.download-btn {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition);
}

.download-btn.primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 6px 25px var(--accent-glow);
}

.download-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 35px var(--accent-glow);
}

.download-btn.primary:active {
    transform: translateY(0);
}

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

.download-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-1);
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 1.1rem;
}

/* ===== Features Callout ===== */
.features-callout {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 22px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.feature-icon {
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-item strong {
    font-size: 0.88rem;
    font-weight: 600;
    display: block;
    margin-bottom: 2px;
}

.feature-item p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 50px 20px 30px;
    border-top: 1px solid var(--border-card);
    color: var(--text-muted);
}

.footer-brand {
    margin-bottom: 18px;
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.footer-credits {
    margin-bottom: 16px;
}

.footer-credits p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-credits strong {
    color: var(--text-primary);
}

.footer-corp {
    font-size: 0.82rem !important;
    color: var(--accent-2) !important;
    letter-spacing: 0.5px;
}

.footer-bottom {
    padding-top: 16px;
    border-top: 1px solid var(--border-card);
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.3px;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .preview-panel {
        position: static;
    }

    .hero {
        padding: 40px 20px 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tab-group {
        gap: 4px;
    }

    .tab {
        padding: 6px 10px;
        font-size: 0.75rem;
    }

    .download-buttons {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .color-row {
        flex-direction: column;
    }

    .style-options {
        justify-content: center;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(16, 185, 129, 0.3);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(16, 185, 129, 0.5);
}

/* ===== Selection ===== */
::selection {
    background: rgba(16, 185, 129, 0.3);
    color: #fff;
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(20, 20, 35, 0.95);
    border-left: 4px solid var(--accent-1);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 16px;
    transform: translateX(120%);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    font-size: 1.5rem;
}

.toast-content strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.toast-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}