/* ============================================================
   XpressImgTools - site.css
   Reset + variables + components + responsive
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { font-family: 'DM Sans', 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: var(--text-primary); background: var(--bg-primary); line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, svg, video, canvas { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; margin: 0 0 .5em; color: var(--text-primary); }
p { margin: 0 0 1em; }

:root {
    --bg-primary: #FAFBFC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --accent: #6366F1;
    --accent-hover: #4F46E5;
    --accent-light: #EEF2FF;
    --border: #E5E7EB;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --drop-zone-bg: #F9FAFB;
    --drop-zone-border: #D1D5DB;
    --drop-zone-active: #6366F1;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

[data-theme="dark"] {
    --bg-primary: #0F1117;
    --bg-secondary: #1A1D27;
    --bg-tertiary: #252836;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --accent: #818CF8;
    --accent-hover: #A5B4FC;
    --accent-light: #1E1B4B;
    --border: #374151;
    --success: #34D399;
    --error: #F87171;
    --warning: #FBBF24;
    --drop-zone-bg: #1A1D27;
    --drop-zone-border: #374151;
    --drop-zone-active: #818CF8;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
}

/* Layout helpers */
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 760px; }
.skip-link { position: absolute; left: -10000px; top: auto; }
.skip-link:focus { left: 12px; top: 12px; background: var(--accent); color: #fff; padding: 8px 12px; border-radius: var(--radius-sm); z-index: 1000; }
.main-content { min-height: 60vh; }

/* Header */
.site-header { background: var(--bg-secondary); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; backdrop-filter: blur(8px); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--text-primary); }
.brand:hover { text-decoration: none; }
.brand-mark { font-size: 22px; }
.brand-name { letter-spacing: -0.01em; }
.brand-accent { color: var(--accent); }
.site-nav { display: flex; align-items: center; gap: 16px; }
.nav-link { color: var(--text-secondary); font-weight: 500; font-size: 14px; }
.nav-link:hover { color: var(--text-primary); text-decoration: none; }

/* Theme toggle */
.theme-toggle { width: 38px; height: 38px; border-radius: 999px; background: var(--bg-tertiary); display: inline-flex; align-items: center; justify-content: center; transition: background .15s; }
.theme-toggle:hover { background: var(--border); }
.theme-icon-dark, .theme-icon-light { font-size: 16px; line-height: 1; }
[data-theme="dark"] .theme-icon-light, :root:not([data-theme="dark"]) .theme-icon-dark { display: none; }

/* Tool nav dropdown */
.tool-nav { position: relative; }
.tool-nav-trigger { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 999px; background: var(--bg-tertiary); color: var(--text-primary); font-weight: 500; font-size: 14px; transition: background .15s; }
.tool-nav-trigger:hover { background: var(--border); }
.tool-nav-trigger .chev { font-size: 10px; }
.tool-nav-panel { position: absolute; right: 0; top: calc(100% + 8px); width: min(640px, 92vw); background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); padding: 16px; display: none; grid-template-columns: repeat(3, 1fr); gap: 16px; z-index: 60; }
.tool-nav-panel.open { display: grid; }
.tool-nav-group h4 { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-secondary); margin-bottom: 8px; }
.tool-nav-group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.tool-nav-group a { display: flex; align-items: center; gap: 8px; padding: 8px; border-radius: var(--radius-sm); color: var(--text-primary); font-size: 14px; }
.tool-nav-group a:hover { background: var(--bg-tertiary); text-decoration: none; }
.tool-nav-icon { font-size: 16px; }

@media (max-width: 720px) {
    .tool-nav-panel { grid-template-columns: 1fr; right: -10px; }
    .nav-link { display: none; }
}

/* Hero */
.hero { padding: 60px 0 40px; background: linear-gradient(180deg, var(--accent-light) 0%, var(--bg-primary) 100%); }
.hero-inner { text-align: center; max-width: 820px; margin: 0 auto; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.02em; margin-bottom: 16px; }
.hero-accent { color: var(--accent); }
.hero-subtitle { font-size: clamp(1rem, 2.2vw, 1.2rem); color: var(--text-secondary); max-width: 640px; margin: 0 auto 24px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 24px; }
.trust-pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 999px; font-size: 13px; color: var(--text-secondary); box-shadow: var(--shadow-sm); }
.hero-search { max-width: 480px; margin: 0 auto; }
.hero-search input { width: 100%; padding: 14px 20px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-secondary); font-size: 15px; box-shadow: var(--shadow-sm); }
.hero-search input:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Tool directory */
.tool-directory { padding: 40px 0 60px; }
.tool-group { margin-bottom: 36px; }
.tool-group-title { font-size: 1.25rem; margin-bottom: 16px; color: var(--text-secondary); font-weight: 600; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.tool-card { display: flex; flex-direction: column; padding: 20px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); color: var(--text-primary); transition: transform .15s, box-shadow .15s, border-color .15s; box-shadow: var(--shadow-sm); }
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--accent); text-decoration: none; }
.tool-card-icon { font-size: 32px; margin-bottom: 12px; }
.tool-card-name { font-size: 1.05rem; margin-bottom: 6px; }
.tool-card-desc { font-size: 14px; color: var(--text-secondary); margin: 0 0 12px; flex: 1; }
.tool-card-cta { font-size: 13px; color: var(--accent); font-weight: 500; }
.tool-empty { text-align: center; color: var(--text-secondary); padding: 40px 0; }

/* Home info */
.home-info { padding: 40px 0 80px; }
.home-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.home-info h2 { font-size: 1.15rem; }
.home-info p { color: var(--text-secondary); font-size: 14px; line-height: 1.6; margin: 0; }

/* Tool hero */
.tool-hero { padding: 40px 0 24px; background: linear-gradient(180deg, var(--accent-light) 0%, var(--bg-primary) 100%); }
.tool-hero-inner { text-align: center; max-width: 720px; margin: 0 auto; }
.tool-icon-large { font-size: 48px; display: inline-block; margin-bottom: 12px; }
.tool-hero h1 { font-size: clamp(1.6rem, 4vw, 2.5rem); letter-spacing: -0.02em; }
.tool-subtitle { color: var(--text-secondary); font-size: clamp(.95rem, 2vw, 1.05rem); margin-bottom: 18px; }
.tool-trust-row { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }

/* Workspace */
.tool-workspace { padding: 24px 0 40px; }

/* Drop zone */
.drop-zone { border: 2px dashed var(--drop-zone-border); background: var(--drop-zone-bg); border-radius: var(--radius-lg); padding: 60px 24px; text-align: center; transition: border-color .15s, background .15s; cursor: pointer; }
.drop-zone:hover, .drop-zone:focus-visible { border-color: var(--drop-zone-active); background: var(--accent-light); }
.drop-zone.is-active { border-color: var(--drop-zone-active); background: var(--accent-light); transform: scale(1.005); }
.drop-zone-icon { font-size: 48px; margin-bottom: 12px; }
.drop-zone h3 { font-size: 1.25rem; margin-bottom: 6px; }
.drop-zone p { color: var(--text-secondary); margin: 0 0 4px; }
.drop-zone-formats { font-size: 13px; margin-bottom: 18px; }
.drop-zone .btn { margin-top: 8px; }

/* Options bar */
.options-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; padding: 20px; margin-top: 20px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.option { display: flex; flex-direction: column; gap: 6px; }
.option label { font-size: 13px; font-weight: 500; color: var(--text-secondary); display: flex; justify-content: space-between; gap: 8px; }
.option-value { font-weight: 600; color: var(--text-primary); }
.option input[type="number"], .option input[type="text"], .option select, .option input[type="color"] { padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-primary); }
.option input[type="range"] { width: 100%; accent-color: var(--accent); }
.option input[type="color"] { padding: 2px; height: 40px; cursor: pointer; }
.option-row { display: flex; align-items: end; gap: 8px; }
.option-row > div { flex: 1; }
.lock-ratio { width: 38px; height: 38px; border-radius: var(--radius-sm); background: var(--bg-tertiary); display: inline-flex; align-items: center; justify-content: center; align-self: end; transition: background .15s, color .15s; }
.lock-ratio[aria-pressed="true"] { background: var(--accent); color: #fff; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; border-radius: var(--radius-sm); font-weight: 500; font-size: 14px; transition: background .15s, color .15s, transform .1s; min-height: 40px; min-width: 44px; }
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); }
.btn-secondary:hover { background: var(--border); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* Results */
.results-area { margin-top: 24px; }
.results-summary { padding: 16px 20px; background: var(--accent-light); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 16px; font-size: 14px; color: var(--text-primary); }
.results-summary strong { color: var(--accent); }
.results-list { display: flex; flex-direction: column; gap: 12px; }
.results-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

.result-card { display: flex; align-items: center; gap: 16px; padding: 14px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.result-thumbnail { position: relative; width: 84px; height: 84px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; background: var(--bg-tertiary); display: flex; align-items: center; justify-content: center; }
.result-thumbnail img, .result-thumbnail canvas { width: 100%; height: 100%; object-fit: cover; }
.format-badge { position: absolute; bottom: 4px; left: 4px; padding: 1px 6px; background: rgba(0,0,0,.6); color: #fff; font-size: 10px; font-weight: 600; border-radius: 4px; text-transform: uppercase; }
.result-info { flex: 1; min-width: 0; }
.result-filename { font-size: 14px; font-weight: 500; margin: 0 0 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-stats { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.stat-arrow { color: var(--text-secondary); }
.stat-savings { font-weight: 600; padding: 1px 6px; border-radius: 4px; }
.stat-savings.success { background: rgba(16,185,129,.15); color: var(--success); }
.stat-savings.warning { background: rgba(245,158,11,.15); color: var(--warning); }
.stat-savings.error { background: rgba(239,68,68,.15); color: var(--error); }
.result-progress { margin-top: 6px; height: 4px; background: var(--bg-tertiary); border-radius: 999px; overflow: hidden; }
.result-progress .progress-bar { height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.result-actions { display: flex; gap: 6px; flex-shrink: 0; }
.result-actions .btn { padding: 8px 12px; font-size: 13px; }

@media (max-width: 560px) {
    .result-card { flex-wrap: wrap; }
    .result-actions { width: 100%; justify-content: stretch; }
    .result-actions .btn { flex: 1; }
}

/* Base64 specific */
.base64-output { margin-top: 24px; display: grid; gap: 16px; }
.base64-block { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; }
.base64-block h3 { font-size: .9rem; margin-bottom: 8px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .05em; }
.base64-block textarea { width: 100%; min-height: 120px; padding: 10px; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-sm); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; resize: vertical; }
.base64-block-actions { display: flex; gap: 8px; margin-top: 10px; }

/* Crop tool */
.crop-canvas-wrap { position: relative; max-width: 100%; margin: 20px auto; user-select: none; touch-action: none; }
.crop-canvas-wrap canvas { display: block; max-width: 100%; height: auto; border-radius: var(--radius-md); }
.crop-overlay { position: absolute; inset: 0; pointer-events: none; }
.crop-box { position: absolute; border: 2px solid var(--accent); box-shadow: 0 0 0 9999px rgba(0,0,0,.5); pointer-events: auto; cursor: move; }
.crop-handle { position: absolute; width: 14px; height: 14px; background: #fff; border: 2px solid var(--accent); border-radius: 50%; pointer-events: auto; }
.crop-handle.nw { top: -8px; left: -8px; cursor: nwse-resize; }
.crop-handle.ne { top: -8px; right: -8px; cursor: nesw-resize; }
.crop-handle.sw { bottom: -8px; left: -8px; cursor: nesw-resize; }
.crop-handle.se { bottom: -8px; right: -8px; cursor: nwse-resize; }

/* Ad slot */
.ad-slot { padding: 24px 20px; background: var(--bg-secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin: 40px 0; }
.ad-slot-inner { max-width: 728px; margin: 0 auto; min-height: 90px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 12px; }
.ad-slot-label { letter-spacing: .1em; text-transform: uppercase; }
@media (max-width: 720px) { .ad-slot-inner { min-height: 100px; max-width: 320px; } }

/* SEO content */
.tool-seo { padding: 0 0 60px; }
.seo-article { max-width: 760px; margin: 0 auto 40px; }
.seo-article h2 { font-size: 1.4rem; margin-top: 24px; }
.seo-article h3 { font-size: 1.1rem; margin-top: 20px; }
.seo-article p, .seo-article ul, .seo-article ol { color: var(--text-secondary); line-height: 1.7; }
.seo-article li { margin-bottom: 4px; }
.seo-article code { background: var(--bg-tertiary); padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }

/* Related tools */
.related-tools { max-width: 1000px; margin: 0 auto; }
.related-tools h2 { font-size: 1.25rem; margin-bottom: 16px; }
.related-tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.related-tool-card { display: flex; flex-direction: column; padding: 14px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); color: var(--text-primary); transition: transform .15s, border-color .15s; }
.related-tool-card:hover { transform: translateY(-1px); border-color: var(--accent); text-decoration: none; }
.related-tool-icon { font-size: 22px; margin-bottom: 6px; }
.related-tool-name { font-weight: 600; font-size: 14px; margin-bottom: 2px; }
.related-tool-desc { font-size: 12px; color: var(--text-secondary); }

/* Footer */
.site-footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 40px 0 20px; margin-top: 40px; }
.site-footer-inner { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; }
.footer-brand-name { font-weight: 700; margin-left: 6px; }
.footer-tagline { color: var(--text-secondary); font-size: 14px; margin-top: 8px; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-secondary); margin-bottom: 10px; }
.footer-col a { display: block; font-size: 14px; color: var(--text-primary); padding: 4px 0; }
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.site-footer-bottom { padding-top: 24px; margin-top: 24px; border-top: 1px solid var(--border); color: var(--text-secondary); font-size: 13px; text-align: center; }

@media (max-width: 720px) {
    .site-footer-inner { grid-template-columns: 1fr; }
    .footer-nav { grid-template-columns: repeat(2, 1fr); }
}

/* Content pages */
.content-page { padding: 60px 0 80px; }
.content-page h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin-bottom: 16px; }
.content-page .lead { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 24px; }
.content-page h2 { font-size: 1.3rem; margin-top: 32px; }
.content-page p, .content-page ul, .content-page ol { line-height: 1.7; }
.content-page .muted { color: var(--text-secondary); font-size: 13px; }
.centered-page { padding: 80px 0; text-align: center; }

/* Toast */
.toast-container { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 8px; z-index: 1000; }
.toast { padding: 12px 18px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); color: var(--text-primary); font-size: 14px; opacity: 0; transform: translateY(20px); animation: toast-in .25s forwards; max-width: 320px; }
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }
.toast.warning { border-left: 4px solid var(--warning); }
@keyframes toast-in { to { opacity: 1; transform: translateY(0); } }