/* ── RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --ink:        #1a1a2e;
    --ink-mid:    #4a4a6a;
    --ink-soft:   #8888aa;
    --paper:      #fafaf7;
    --paper-alt:  #f2f0eb;
    --white:      #ffffff;
    --accent:     #ff6b35;
    --accent-dk:  #e5521c;
    --accent-lt:  #fff0ea;
    --teal:       #00b4aa;
    --purple:     #7c4dff;
    --purple-lt:  #ede8ff;
    --border:     #e5e3dc;
    --shadow-sm:  0 2px 8px rgba(26,26,46,0.08);
    --shadow-md:  0 8px 24px rgba(26,26,46,0.12);
    --radius-sm:  8px;
    --radius-md:  16px;
    --radius-lg:  24px;
    --radius-xl:  40px;
}

html { scroll-behavior: smooth; }
body {
    font-family: 'DM Sans', sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { font-family: 'Playfair Display', serif; line-height: 1.2; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.hidden { display: none !important; }

/* ── HEADER ────────────────────────────────────────────────── */
header {
    position: sticky; top: 0; z-index: 200;
    background: rgba(250,250,247,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 32px; height: 68px; }
.logo { display:flex; align-items:center; gap:8px; font-family:'Playfair Display',serif; font-size:22px; font-weight:700; flex-shrink:0; }
.logo-text em { color:var(--accent); font-style:normal; }
header nav { display:flex; gap:28px; margin-left:auto; }
header nav a { font-size:15px; font-weight:500; color:var(--ink-mid); transition:color 0.2s; }
header nav a:hover { color:var(--accent); }
.btn-nav {
    display:inline-flex; align-items:center; padding:8px 20px;
    background:var(--ink); color:var(--white); border-radius:var(--radius-xl);
    font-size:14px; font-weight:600; transition:background 0.2s,transform 0.15s; flex-shrink:0;
}
.btn-nav:hover { background:var(--accent); transform:translateY(-1px); }

/* ── HERO ──────────────────────────────────────────────────── */
.hero { position:relative; overflow:hidden; padding:100px 0 80px; text-align:center; }
.hero-bg-doodles { position:absolute; inset:0; pointer-events:none; }
.doodle { position:absolute; opacity:0.06; color:var(--accent); }
.d1 { width:180px; top:-40px; left:-30px; transform:rotate(-15deg); }
.d2 { width:140px; top:30px; right:40px; transform:rotate(20deg); }
.d3 { width:100px; bottom:20px; left:15%; transform:rotate(10deg); }
.d4 { width:200px; bottom:-30px; right:-20px; transform:rotate(-10deg); }
.d5 { width:120px; top:50%; left:60%; transform:rotate(30deg); }
.hero-content { position:relative; z-index:1; }
.hero-badge {
    display:inline-block; padding:6px 16px; background:var(--accent-lt); color:var(--accent-dk);
    border-radius:var(--radius-xl); font-size:13px; font-weight:600;
    letter-spacing:0.04em; margin-bottom:28px; text-transform:uppercase;
}
.hero h1 { font-size:clamp(40px,6vw,72px); font-weight:900; margin-bottom:24px; letter-spacing:-0.02em; }
.hero h1 .highlight { position:relative; display:inline-block; color:var(--accent); }
.hero h1 .highlight::after {
    content:''; position:absolute; bottom:2px; left:0; right:0; height:6px;
    background:var(--accent); opacity:0.18; border-radius:4px;
}
.hero-sub { font-size:18px; color:var(--ink-mid); max-width:560px; margin:0 auto 36px; }
.btn-hero {
    display:inline-flex; align-items:center; gap:10px; padding:16px 36px;
    background:var(--accent); color:var(--white); border-radius:var(--radius-xl);
    font-size:17px; font-weight:600; transition:all 0.2s;
    box-shadow:0 8px 32px rgba(255,107,53,0.35); margin-bottom:20px;
}
.btn-hero:hover { background:var(--accent-dk); transform:translateY(-3px); box-shadow:0 14px 40px rgba(255,107,53,0.45); }
.hero-note { font-size:13px; color:var(--ink-soft); }

/* ── AD SLOT ───────────────────────────────────────────────── */
.ad-slot {
    display:flex; align-items:center; justify-content:center;
    min-height:90px; margin:32px auto;
    background:var(--paper-alt); border:1px dashed var(--border);
    border-radius:var(--radius-sm); color:var(--ink-soft); font-size:13px; max-width:900px;
}

/* ── APP SECTION ───────────────────────────────────────────── */
.app-section { padding:20px 0 60px; }

.drop-zone {
    border:2.5px dashed var(--border); border-radius:var(--radius-lg);
    padding:72px 40px; text-align:center; background:var(--white);
    transition:border-color 0.25s,background 0.25s; cursor:pointer;
}
.drop-zone:hover,.drop-zone.dragover { border-color:var(--accent); background:var(--accent-lt); }
.drop-icon {
    width:80px; height:80px; background:var(--accent-lt); border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    margin:0 auto 20px; color:var(--accent); transition:transform 0.2s;
}
.drop-zone:hover .drop-icon { transform:scale(1.05); }
.drop-zone h2 { font-size:26px; margin-bottom:8px; }
.drop-zone > p { color:var(--ink-soft); margin-bottom:28px; }
.upload-actions { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-bottom:16px; }
.btn-upload {
    display:inline-flex; align-items:center; gap:8px; padding:13px 28px;
    background:var(--accent); color:var(--white); border:none; border-radius:var(--radius-xl);
    font-size:15px; font-weight:600; cursor:pointer; font-family:'DM Sans',sans-serif; transition:all 0.2s;
}
.btn-upload:hover { background:var(--accent-dk); transform:translateY(-2px); }
.btn-sample {
    display:inline-flex; align-items:center; gap:8px; padding:13px 28px;
    background:var(--white); color:var(--ink); border:1.5px solid var(--border);
    border-radius:var(--radius-xl); font-size:15px; font-weight:600;
    cursor:pointer; font-family:'DM Sans',sans-serif; transition:all 0.2s;
}
.btn-sample:hover { border-color:var(--ink); }
.file-hint { font-size:12px; color:var(--ink-soft); }

/* Loading */
.loading-panel { text-align:center; padding:80px 40px; background:var(--white); border-radius:var(--radius-lg); }
.crayon-loader { display:flex; justify-content:center; gap:10px; margin-bottom:28px; }
.crayon { width:14px; height:56px; border-radius:4px 4px 2px 2px; animation:crayonBounce 1s ease-in-out infinite; }
.c1 { background:var(--accent); animation-delay:0s; }
.c2 { background:var(--teal); animation-delay:0.15s; }
.c3 { background:var(--purple); animation-delay:0.3s; }
@keyframes crayonBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-20px)} }
.loading-panel h3 { font-size:24px; margin-bottom:8px; }
.loading-panel p { color:var(--ink-mid); margin-bottom:24px; }
.progress-bar { width:280px; height:6px; background:var(--paper-alt); border-radius:10px; margin:0 auto; overflow:hidden; }
.progress-fill { height:100%; width:0%; background:linear-gradient(90deg,var(--accent),var(--teal)); border-radius:10px; transition:width 0.4s ease; }

/* Result */
.original-row {
    display:flex; flex-direction:column; gap:12px; background:var(--white);
    border-radius:var(--radius-md); padding:24px; margin-bottom:40px; border:1px solid var(--border);
}
.original-info { display:flex; justify-content:space-between; align-items:center; }
.original-info h3 { font-size:18px; }
#original-img { max-width:100%; max-height:360px; object-fit:contain; border-radius:var(--radius-sm); display:block; }
.btn-reset {
    padding:8px 18px; background:var(--paper-alt); color:var(--ink-mid);
    border:1px solid var(--border); border-radius:var(--radius-xl);
    font-size:14px; font-weight:500; cursor:pointer; font-family:'DM Sans',sans-serif; transition:all 0.2s;
}
.btn-reset:hover { border-color:var(--ink); color:var(--ink); }
.output-heading { text-align:center; font-size:34px; margin-bottom:32px; }

/* Cards */
.cards-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-bottom:40px; }
.result-card {
    background:var(--white); border-radius:var(--radius-md); border:1.5px solid var(--border);
    padding:24px; position:relative; transition:box-shadow 0.2s,transform 0.2s;
}
.result-card:hover { box-shadow:var(--shadow-md); transform:translateY(-3px); }
.result-card.featured { border-color:var(--accent); box-shadow:0 0 0 1px var(--accent),var(--shadow-sm); }
.featured-ribbon {
    position:absolute; top:-1px; left:50%; transform:translateX(-50%);
    background:var(--accent); color:var(--white); font-size:12px; font-weight:700;
    padding:4px 14px; border-radius:0 0 10px 10px; letter-spacing:0.04em; text-transform:uppercase;
}
.card-top { margin-bottom:16px; }
.card-label { display:flex; align-items:center; gap:10px; margin-bottom:6px; }
.card-label h4 { font-size:20px; }
.card-desc { font-size:13px; color:var(--ink-mid); }
.tag { font-size:11px; font-weight:700; padding:3px 10px; border-radius:20px; text-transform:uppercase; letter-spacing:0.04em; }
.tag-green  { background:#dcfce7; color:#166534; }
.tag-blue   { background:#dbeafe; color:#1e40af; }
.tag-purple { background:var(--purple-lt); color:var(--purple); }
.canvas-wrap { background:var(--white); border:1px solid var(--border); border-radius:var(--radius-sm); overflow:hidden; margin-bottom:16px; }
canvas { display:block; width:100%; height:auto; }
.card-btns { display:flex; gap:8px; flex-wrap:wrap; }
.cbtn {
    flex:1; min-width:60px; padding:8px 10px; background:var(--paper-alt); color:var(--ink);
    border:1px solid var(--border); border-radius:var(--radius-sm); font-size:13px; font-weight:500;
    cursor:pointer; font-family:'DM Sans',sans-serif; transition:all 0.15s; text-align:center;
}
.cbtn:hover { background:var(--ink); color:var(--white); border-color:var(--ink); }
.download-all-row { text-align:center; padding:32px 0 8px; border-top:1px solid var(--border); }
.btn-download-all {
    display:inline-flex; align-items:center; gap:10px; padding:16px 40px;
    background:var(--ink); color:var(--white); border:none; border-radius:var(--radius-xl);
    font-size:16px; font-weight:600; cursor:pointer; font-family:'DM Sans',sans-serif; transition:all 0.2s;
}
.btn-download-all:hover { background:var(--accent); transform:translateY(-2px); }

/* ── INFO SECTIONS ─────────────────────────────────────────── */
.info-section { padding:80px 0; }
.info-section.alt-bg { background:var(--paper-alt); }
.section-label { display:inline-block; font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:0.1em; color:var(--accent); margin-bottom:12px; }
.info-section h2 { font-size:clamp(28px,4vw,42px); margin-bottom:32px; }
.info-section p { font-size:16px; color:var(--ink-mid); margin-bottom:18px; line-height:1.8; }

.steps-row { display:flex; align-items:flex-start; gap:16px; margin-top:16px; flex-wrap:wrap; }
.step { flex:1; min-width:200px; padding:28px; background:var(--white); border-radius:var(--radius-md); border:1px solid var(--border); }
.step-num { font-family:'Playfair Display',serif; font-size:42px; font-weight:900; color:var(--accent); opacity:0.25; line-height:1; margin-bottom:12px; }
.step h4 { font-size:18px; margin-bottom:8px; }
.step p { font-size:14px; color:var(--ink-mid); }
.step-arrow { font-size:24px; color:var(--ink-soft); padding-top:40px; flex-shrink:0; }

.features-section { padding:80px 0; background:var(--white); }
.features-section h2 { margin-bottom:40px; }
.features-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.feature-card { padding:28px; background:var(--paper); border-radius:var(--radius-md); border:1px solid var(--border); transition:box-shadow 0.2s; }
.feature-card:hover { box-shadow:var(--shadow-sm); }
.feat-icon { font-size:28px; margin-bottom:14px; }
.feature-card h4 { font-size:17px; margin-bottom:8px; }
.feature-card p { font-size:14px; color:var(--ink-mid); }

.use-cases { display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.use-cases span { padding:8px 16px; background:var(--white); border:1px solid var(--border); border-radius:var(--radius-xl); font-size:14px; font-weight:500; }

.faq-list { display:flex; flex-direction:column; gap:12px; }
.faq-item { border:1.5px solid var(--border); border-radius:var(--radius-md); background:var(--white); overflow:hidden; }
.faq-q { display:flex; justify-content:space-between; align-items:center; width:100%; padding:20px 24px; background:none; border:none; font-size:16px; font-weight:600; font-family:'DM Sans',sans-serif; color:var(--ink); cursor:pointer; text-align:left; }
.faq-arrow { font-size:18px; transition:transform 0.25s; flex-shrink:0; }
.faq-q.open .faq-arrow { transform:rotate(180deg); }
.faq-a { display:none; padding:0 24px 20px; }
.faq-a p { font-size:15px; color:var(--ink-mid); margin:0; }
.faq-a.open { display:block; }

/* ── FOOTER ────────────────────────────────────────────────── */
footer { background:var(--ink); color:#aab0cc; padding:56px 0 32px; }
.footer-inner { display:flex; flex-direction:column; gap:24px; }
.footer-brand .logo-text { color:var(--white); font-size:20px; }
.footer-brand .logo-text em { color:var(--accent); font-style:normal; }
.footer-brand p { font-size:14px; color:#7780a0; margin-top:6px; }
.footer-nav { display:flex; flex-wrap:wrap; gap:12px 24px; }
.footer-nav a { font-size:14px; color:#7780a0; transition:color 0.2s; }
.footer-nav a:hover { color:var(--white); }
.copyright { font-size:13px; color:#4a5060; margin-top:8px; }

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media(max-width:900px){
    .cards-grid { grid-template-columns:1fr; max-width:480px; margin-inline:auto; }
    .features-grid { grid-template-columns:repeat(2,1fr); }
    .steps-row { flex-direction:column; }
    .step-arrow { display:none; }
}
@media(max-width:640px){
    header nav { display:none; }
    .hero { padding:64px 0 48px; }
    .features-grid { grid-template-columns:1fr; }
    .btn-nav { padding:7px 14px; font-size:13px; }
    .drop-zone { padding:48px 20px; }
}