/* StoreNothing — QR Code Generator
   Shared stylesheet for en / hi / es pages (qr-code-generator*.html) */

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

        :root {
            --bg: #f9fafb;
            --surface: #ffffff;
            --surface-raised: #ffffff;
            --border: rgba(0,0,0,0.08);
            --border-strong: rgba(0,0,0,0.14);
            --text-primary: #0d1117;
            --text-secondary: #586069;
            --text-muted: #8b949e;
            --accent: #2563eb;
            --accent-hover: #1d4ed8;
            --accent-light: #eff6ff;
            --accent-light-border: #bfdbfe;
            --green: #059669;
            --green-light: #ecfdf5;
            --red: #dc2626;
            --red-light: #fef2f2;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 32px rgba(0,0,0,0.1), 0 2px 8px rgba(0,0,0,0.04);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
        }

        html.dark {
            --bg: #0d1117;
            --surface: #161b22;
            --surface-raised: #1c2128;
            --border: rgba(255,255,255,0.06);
            --border-strong: rgba(255,255,255,0.12);
            --text-primary: #e6edf3;
            --text-secondary: #8b949e;
            --text-muted: #6e7681;
            --accent: #3b82f6;
            --accent-hover: #60a5fa;
            --accent-light: rgba(59,130,246,0.08);
            --accent-light-border: rgba(59,130,246,0.2);
            --green: #10b981;
            --green-light: rgba(16,185,129,0.08);
            --red: #f87171;
            --red-light: rgba(248,113,113,0.08);
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.2);
            --shadow-lg: 0 10px 32px rgba(0,0,0,0.5), 0 2px 8px rgba(0,0,0,0.2);
        }

        html { scroll-behavior: smooth; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
            background: var(--bg);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            transition: background 0.2s, color 0.2s;
            -webkit-font-smoothing: antialiased;
            width: 100%;
            overflow-x: hidden;
        }

        header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(249,250,251,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
            border-bottom: 0px solid var(--border); transition: background 0.2s;
        }
        html.dark header { background: rgba(13,17,23,0.88); }

        .header-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; height: 65px; padding-top: 8px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }

        .logo { display: flex; align-items: center; gap: 5px; text-decoration: none; }
        .logo-mark { width: 30px; height: 34px; flex-shrink: 0; position: relative; display: flex; align-items: center; justify-content: center; }
        .logo-mark::before { content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: var(--accent); clip-path: polygon(0% 0%, calc(100% - 8px) 0%, 100% 8px, 100% 100%, 0% 100%); z-index: 1; }
        .logo-mark::after { content: ""; position: absolute; top: 0; right: 0; width: 8px; height: 8px; background: rgba(255, 255, 255, 0.4); border-bottom-left-radius: 3px; clip-path: polygon(0 0, 100% 100%, 0 100%); z-index: 2; }
        .logo-mark svg { display: block; z-index: 3;}
        .logo-dot { position: absolute; bottom: -2px; right: -2px; width: 10px; height: 10px; background-color: #3fb950; border-radius: 50%; border: 2px solid var(--surface); z-index: 4; transition: background-color 0.3s ease; }
        .logo-dot.is-offline { background-color: #f85149; }
        .logo-text { line-height: 1.2; }
        .logo-name { font-size: 30px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
        .logo-name span { color: var(--accent); font-weight: 700; }

        nav { display: flex; align-items: center; gap: 4px; }
        .hamburger-btn { margin-left: auto; display: none; width: 34px; height: 34px; border-radius: var(--radius-sm); border: none; background: transparent; color: var(--text-primary); cursor: pointer; align-items: center; justify-content: center; }
        .hamburger-btn:hover { background: var(--border); }
        .nav-scrim { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 199; opacity: 0; transition: opacity 0.25s ease; }
        .nav-scrim.open { opacity: 1; }
        .nav-drawer { display: none; }
        body.drawer-open { overflow: hidden; }

        .nav-link { font-size: 13px; font-weight: 500; color: var(--text-secondary); text-decoration: none; padding: 6px 12px; border-radius: var(--radius-sm); transition: color 0.15s, background 0.15s; }
        .nav-link:hover { color: var(--text-primary); background: var(--border); }

        .nav-dropdown { position: relative; }
        .nav-dropdown-btn { font-size: 13px; font-weight: 600; color: var(--text-secondary); padding: 8px 14px; border-radius: var(--radius-sm); border: none; background: none; cursor: pointer; display: flex; align-items: center; gap: 6px; transition: color 0.15s, background 0.15s; }
        .nav-dropdown-btn:hover { color: var(--text-primary); background: var(--border); }
        .nav-dropdown-btn svg { transition: transform 0.2s; }
        .nav-dropdown-btn.open svg,
        .nav-dropdown:hover .nav-dropdown-btn svg { transform: rotate(180deg); }

        .dropdown-menu {
            position: absolute; top: calc(100% + 10px); left: 50%; min-width: 460px; max-width: min(460px, 92vw);
            display: grid; grid-template-columns: 1fr 1fr; gap: 4px; background: var(--surface-raised);
            border: 1px solid var(--border-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
            padding: 10px; overflow: hidden; opacity: 0; visibility: hidden; pointer-events: none;
            transform: translate(-50%, -8px); transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s; z-index: 50;
        }
        .dropdown-menu.open { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }

        .dropdown-column { display: flex; flex-direction: column; gap: 2px; }
        .dropdown-column-title { font-size: 11px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-muted); padding: 6px 10px 8px; }
        .dropdown-item { display: flex; align-items: center; gap: 10px; padding: 9px 10px; text-decoration: none; font-size: 13px; font-weight: 500; color: var(--text-primary); border-radius: var(--radius-sm); transition: background 0.12s; }
        .dropdown-item:hover { background: var(--bg); }
        .dropdown-icon { width: 28px; height: 28px; border-radius: var(--radius-sm); background: var(--accent-light); display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }




        .theme-btn { width: 34px; height: 34px; border-radius: 50%; border: none; background: transparent; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 16px; transition: background 0.15s; }
        .theme-btn:hover { background: var(--border); }
        .nav-divider { width: 1px; height: 20px; background: var(--border-strong); margin: 0 4px; }

        @media (max-width: 600px) {
            .header-inner { padding: 0 12px; gap: 8px; }
            .logo-name { font-size: 20px; }
            nav { display: none; }
            .hamburger-btn { display: flex; margin-left: auto; }
            .nav-scrim { display: block; pointer-events: none; }
            .nav-scrim.open { pointer-events: auto; }
            .nav-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(82vw, 320px); max-width: 100vw; box-sizing: border-box; background: var(--surface); border-left: 1px solid var(--border); box-shadow: var(--shadow-lg); z-index: 200; display: flex; flex-direction: column; gap: 4px; padding: 20px 16px; transform: translateX(100%); transition: transform 0.3s ease; overflow-y: auto; overflow-x: hidden; }
            .nav-drawer.open { transform: translateX(0); }
            .nav-drawer-close { align-self: flex-end; width: 32px; height: 32px; border: none; background: transparent; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; margin-bottom: 8px; }
            .nav-drawer .nav-link, .nav-drawer .theme-btn-mobile { width: 100%; justify-content: flex-start; padding: 12px 10px; border-radius: var(--radius-sm); font-size: 14px; }
            .theme-btn-mobile { display: flex; align-items: center; gap: 10px; background: none; border: none; color: var(--text-secondary); cursor: pointer; text-align: left; }
            .nav-drawer .nav-dropdown-btn { width: 100%; justify-content: space-between; padding: 12px 10px; }
            .nav-drawer .dropdown-menu { position: static; left: auto; display: none; grid-template-columns: 1fr; min-width: 0; width: 100%; border: none; box-shadow: none; background: var(--bg); border-radius: var(--radius); opacity: 1; visibility: visible; pointer-events: auto; transform: none; padding: 8px; margin-top: 4px; }
            .nav-drawer .dropdown-menu.open { display: grid; }
        }

        main { max-width: 1100px; margin: 0 auto; padding: 80px 24px 80px; }

        .hero { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; margin-bottom: 100px; min-width: 0; }
        .hero > div { min-width: 0; }
        @media (max-width: 800px) { .hero { grid-template-columns: 1fr; gap: 48px; margin-bottom: 64px; } }

        .hero-eyebrow { display: inline-flex; align-items: center; gap: 6px; background: var(--accent-light); border: 1px solid var(--accent-light-border); border-radius: 20px; padding: 4px 12px; font-size: 11.5px; font-weight: 600; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 20px; }
        .hero-eyebrow::before { content: ''; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
        .hero-title { font-size: clamp(32px, 5vw, 52px); font-weight: 800; letter-spacing: -0.035em; line-height: 1.1; color: var(--text-primary); margin-bottom: 16px; }
        .hero-title em { font-style: normal; color: var(--accent); }
        .hero-desc { font-size: 15.5px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 32px; max-width: 420px; }
        .hero-features { display: flex; flex-direction: column; gap: 12px; }
        .hero-feature { display: flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 500; color: var(--text-secondary); }

        .check-icon { width: 20px; height: 20px; border-radius: 50%; background: var(--green-light); border: 1px solid rgba(5,150,105,0.2); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

        .upload-card { background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius-xl); padding: 24px; box-shadow: var(--shadow-md); position: relative; max-width: 400px; width: 100%; margin: 0 auto; min-width: 0; }

        .workspace-ctrl { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
        .workspace-title { font-size: 13.5px; font-weight: 700; color: var(--text-primary); }

        .btn-clear { font-size: 11px; font-weight: 600; padding: 4px 8px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong); background: var(--surface); color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; gap: 4px; transition: all 0.15s; }
        .btn-clear:hover { background: var(--red-light); border-color: var(--red); color: var(--red); }

        .type-tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 10px; margin-bottom: 16px; border-bottom: 1px solid var(--border); scrollbar-width: thin; }
        .type-tabs::-webkit-scrollbar { height: 4px; }
        .type-tabs::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
        .type-tab { background: var(--bg); border: 1px solid var(--border); color: var(--text-secondary); padding: 6px 12px; border-radius: var(--radius-sm); font-size: 12px; font-weight: 600; white-space: nowrap; cursor: pointer; transition: all 0.15s ease; }
        .type-tab:hover { border-color: var(--border-strong); color: var(--text-primary); }
        .type-tab.active { background: var(--accent); color: white; border-color: var(--accent); }

        .qr-inputs-container { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
        .qr-form-group { display: flex; flex-direction: column; gap: 6px; }
        .qr-form-group.full-width { grid-column: 1 / -1; }
        .qr-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
        @media (max-width: 480px) { .qr-form-row { grid-template-columns: 1fr; } }
        .qr-label { font-size: 11.5px; font-weight: 600; color: var(--text-secondary); }
        .qr-input, .qr-select, .qr-textarea { width: 100%; padding: 8px 12px; font-size: 13px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface-raised); color: var(--text-primary); font-family: inherit; transition: border-color 0.15s; }
        .qr-textarea { min-height: 70px; resize: vertical; }
        .qr-input:focus, .qr-select:focus, .qr-textarea:focus { outline: none; border-color: var(--accent); }

        .qr-options-details { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px; margin-bottom: 16px; background: var(--bg); }
        .qr-options-summary { font-size: 12px; font-weight: 600; color: var(--text-secondary); cursor: pointer; user-select: none; }
        .qr-options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
        @media (max-width: 480px) { .qr-options-grid { grid-template-columns: 1fr; } }

        .color-picker-wrapper { display: flex; align-items: center; gap: 8px; }
        .color-picker-wrapper input[type="color"] { -webkit-appearance: none; border: none; width: 32px; height: 32px; border-radius: var(--radius-sm); cursor: pointer; background: none; }
        .color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
        .color-picker-wrapper input[type="color"]::-webkit-color-swatch { border: 1px solid var(--border-strong); border-radius: var(--radius-sm); }
        .color-hex { font-size: 11.5px; font-family: monospace; color: var(--text-muted); }
        .qr-checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 500; cursor: pointer; color: var(--text-secondary); }

        .preview-box { text-align: center; border: 1px solid var(--border); padding: 20px; border-radius: var(--radius-sm); background: var(--bg); display: flex; justify-content: center; align-items: center; min-height: 200px; min-width: 0; overflow: hidden; }
        .qr-canvas-container { display: flex; justify-content: center; align-items: center; max-width: 100%; min-width: 0; }
        .qr-canvas-container canvas { max-width: 100%; height: auto !important; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }

        .output-wrapper { margin-top: 16px; }
        .output-actions-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
        @media (max-width: 480px) { .output-actions-grid { grid-template-columns: 1fr; } }
        .action-btn { font-size: 12px; font-weight: 600; padding: 10px 14px; border-radius: var(--radius-sm); cursor: pointer; border: none; transition: background 0.15s, transform 0.1s; text-align: center; }
        .action-btn.primary { background: var(--text-primary); color: var(--surface); }
        .action-btn.primary:hover { opacity: 0.88; }
        .action-btn.secondary { background: var(--bg); border: 1px solid var(--border-strong); color: var(--text-primary); }
        .action-btn.secondary:hover { background: var(--border); }
        .action-btn:active { transform: scale(0.98); }

        .scroll-cue { display: flex; flex-direction: column; align-items: center; gap: 8px; margin-top: 64px; }
        .scroll-cue-label { font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }
        .scroll-cue-arrow { color: var(--text-muted); animation: bounce 2s ease-in-out infinite; }
        @keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(4px); } }

        .features-section { border-top: 1px solid var(--border); padding-top: 80px; }
        .features-label { font-size: 11.5px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
        .features-title { font-size: clamp(22px, 3vw, 32px); font-weight: 800; letter-spacing: -0.03em; color: var(--text-primary); margin-bottom: 48px; }
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        @media (max-width: 700px) { .features-grid { grid-template-columns: 1fr; } }
        .feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; transition: border-color 0.2s, box-shadow 0.2s; }
        .feature-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
        .feature-icon { width: 38px; height: 38px; border-radius: var(--radius-sm); background: var(--accent-light); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
        .feature-h { font-size: 14.5px; font-weight: 700; letter-spacing: -0.01em; color: var(--text-primary); margin-bottom: 8px; }
        .feature-p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

        footer { border-top: 1px solid var(--border); background: var(--surface); padding: 28px 24px; margin-top: 80px; }
        .footer-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
        .footer-copy { font-size: 12.5px; color: var(--text-muted); }
        .footer-links { display: flex; align-items: center; gap: 20px; }
        .footer-link { font-size: 12.5px; font-weight: 500; color: var(--text-muted); text-decoration: none; transition: color 0.15s; }
        .footer-link:hover { color: var(--text-primary); }

        .lang-box { position: relative; display: inline-block; }
        .lang-trigger { font-size: 12px; font-weight: 500; color: var(--text-muted); background: none; border: 1px solid var(--border-strong); padding: 5px 10px; border-radius: var(--radius-sm); cursor: pointer; display: flex; align-items: center; gap: 4px; transition: color 0.2s, border-color 0.2s; }
        /* .lang-trigger.open { color: var(--accent); border-color: var(--accent); } */
        .lang-popover { position: absolute; bottom: calc(100% + 6px); right: 0; min-width: 130px; background: var(--surface-raised); border: 1px solid var(--border-strong); border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); overflow: hidden; opacity: 0; visibility: hidden; transform: translateY(4px); transition: all 0.15s; z-index: 150; }
        .lang-popover.open { opacity: 1; visibility: visible; transform: translateY(0); }
        .lang-option { width: 100%; background: none; border: none; display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; font-size: 12.5px; color: var(--text-primary); cursor: pointer; text-align: left; text-decoration: none; }
        .lang-option:hover { background: var(--bg); }
        .lang-option.selected { color: var(--accent); font-weight: 600; }


/* ================= Mobile compatibility refinements ================= */
@media (max-width: 600px) {
    main { padding: 32px 16px 56px; }
    .upload-card { padding: 18px; border-radius: var(--radius-lg); }
    .hero-title { line-height: 1.15; }
    .hero-desc { max-width: 100%; }
    .footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
    .footer-links { flex-wrap: wrap; gap: 14px; }
    .lang-box { align-self: flex-start; }
    .lang-popover { left: 0; right: auto; }
    .type-tab { padding: 8px 12px; font-size: 12.5px; }
    .output-actions-grid .action-btn { padding: 12px 14px; }
    .qr-canvas-container canvas { width: 100%; max-width: 280px; }
    .features-section { padding-top: 56px; }
    footer { padding: 24px 16px; margin-top: 56px; }
}

@media (max-width: 380px) {
    .header-inner { padding: 0 10px; }
    .logo-name { font-size: 18px; }
    .hero-title { font-size: 28px; }
    .dropdown-menu { min-width: 0; width: 94vw; }
}

/* Prevent iOS zoom-on-focus by keeping form controls at 16px on touch screens */
@media (max-width: 600px) {
    .qr-input, .qr-select, .qr-textarea { font-size: 16px; }
}

/* Larger tap targets on touch devices */
@media (pointer: coarse) {
    .action-btn, .type-tab, .nav-link, .lang-option, .dropdown-item { min-height: 40px; }
    .theme-btn, .theme-btn-mobile, .hamburger-btn { min-width: 40px; min-height: 40px; }
}