/* Image Tools — shared stylesheet
   Mobile-first, light theme, no dependencies. Original design for this site. */

:root {
  --bg: #ffffff;
  --bg-soft: #eef4fb;
  --text: #16283c;
  --muted: #54708c;
  --accent: #b45309;
  --accent-bright: #f59e0b;
  --navy: #0f2a4a;
  --navy-dark: #0a1e36;
  --accent-soft: #fdf3e0;
  --border: #d7e2ee;
  --card: #ffffff;
  --ok: #15803d;
  --ok-soft: #f0fdf4;
  --error: #b91c1c;
  --error-soft: #fef2f2;
  --radius: 12px;
  --max-width: 940px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1rem;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 3px solid var(--accent-bright);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}

.brand {
  font-weight: 800;
  font-size: 1.15rem;
  color: #ffffff;
  text-decoration: none;
}
.brand span { color: var(--accent-bright); }

.nav-toggle {
  display: inline-block;
  background: none;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 8px;
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  color: #ffffff;
}

.site-nav { display: none; }
.site-nav.open { display: block; }

.site-nav a {
  display: block;
  padding: 0.55rem 0;
  color: #dce9f7;
  text-decoration: none;
  font-weight: 600;
}
.site-nav a:hover { color: #ffffff; text-decoration: underline; }

@media (min-width: 760px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; gap: 1.4rem; }
  .site-nav a { padding: 0; }
}

/* ---------- Hero ---------- */
.hero {
  background: var(--bg-soft);
  padding: 2.4rem 0 1.6rem;
  border-bottom: 1px solid var(--border);
}
.hero h1 { margin: 0 0 .5rem; font-size: 1.9rem; line-height: 1.25; color: var(--navy-dark); }
.hero p { margin: 0; color: var(--muted); font-size: 1.05rem; max-width: 42rem; }

.privacy-badge {
  display: inline-block;
  margin-top: 1rem;
  background: var(--ok-soft);
  border: 1px solid #bbf7d0;
  color: var(--ok);
  font-weight: 700;
  font-size: .9rem;
  border-radius: 999px;
  padding: .35rem .9rem;
}

/* ---------- Ad slot ---------- */
.ad-slot {
  margin: 1.1rem auto;
  min-height: 90px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: #fbfcfe;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.2rem 0 0.4rem;
}
@media (min-width: 600px) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  text-decoration: none;
  color: var(--text);
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--accent-bright); transform: translateY(-2px); }
.card h3 { margin: 0 0 .35rem; font-size: 1.05rem; color: var(--navy); }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---------- Articles / content ---------- */
.article { padding: 1.4rem 0 0.6rem; }
.article h2 { color: var(--navy-dark); margin: 1.4rem 0 .5rem; font-size: 1.35rem; }
.article h3 { color: var(--navy); margin: 1.1rem 0 .4rem; font-size: 1.1rem; }
.article p { margin: .55rem 0; }
.article ul, .article ol { margin: .5rem 0 .8rem; padding-left: 1.4rem; }
.article li { margin: .3rem 0; }
.lead { font-size: 1.05rem; color: var(--text); }
.article-meta { color: var(--muted); font-size: .9rem; }

/* ---------- Tool box ---------- */
.tool-box {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 1.1rem 0;
}

.drop-zone {
  border: 2px dashed var(--muted);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 1.6rem 1rem;
  text-align: center;
  cursor: pointer;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--accent-bright); background: var(--accent-soft); }
.drop-zone p { margin: .3rem 0; }
.drop-zone .big { font-size: 1.05rem; font-weight: 700; color: var(--navy); }
.drop-zone input[type="file"] { display: none; }

.field { margin: 0.9rem 0; }
.field label { display: block; font-weight: 600; margin-bottom: .3rem; }
.field input[type="number"], .field input[type="text"], .field select {
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  background: #fff;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }

input[type="range"] { width: 100%; accent-color: var(--accent-bright); }

.btn {
  display: inline-block;
  background: var(--accent-bright);
  color: #231600;
  border: none;
  border-radius: 8px;
  padding: .7rem 1.4rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--accent); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-secondary {
  background: #ffffff;
  border: 1px solid var(--navy);
  color: var(--navy);
}
.btn-secondary:hover { background: var(--navy); color: #fff; }

.preset-row { display: flex; flex-wrap: wrap; gap: .5rem; margin: .5rem 0; }
.preset-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: .35rem .85rem;
  font-size: .9rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
}
.preset-btn:hover, .preset-btn.active { border-color: var(--accent-bright); background: var(--accent-soft); }

.checkline { display: flex; align-items: center; gap: .5rem; font-weight: 600; }
.checkline input { width: 1.1rem; height: 1.1rem; accent-color: var(--accent-bright); }

.preview-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-top: 1rem; }
@media (min-width: 640px) { .preview-grid { grid-template-columns: 1fr 1fr; } }
.preview-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: .8rem; text-align: center; }
.preview-box h4 { margin: 0 0 .5rem; font-size: .95rem; color: var(--navy); }
.preview-box img { max-width: 100%; max-height: 260px; border-radius: 6px; }
.preview-box .size-line { font-size: .9rem; color: var(--muted); margin-top: .4rem; }

.result-line {
  background: var(--ok-soft);
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: .7rem 1rem;
  margin-top: 1rem;
  display: none;
}
.result-line.show { display: block; }

.error-msg {
  display: none;
  background: var(--error-soft);
  border: 1px solid #fecaca;
  color: var(--error);
  border-radius: 8px;
  padding: .6rem .9rem;
  margin-top: .8rem;
  font-size: .95rem;
}
.error-msg.show { display: block; }

.note { font-size: .9rem; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .8rem 1rem;
  margin: .6rem 0;
  background: #fff;
}
.faq summary { font-weight: 700; cursor: pointer; color: var(--navy); }
.faq details p { margin: .5rem 0 0; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 2.5rem;
  background: var(--navy-dark);
  color: #c9dcee;
  padding: 2rem 0 1.2rem;
}
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 1.4rem; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr; } }
.site-footer h3 { color: #fff; margin: 0 0 .6rem; font-size: 1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: .35rem 0; }
.site-footer a { color: #c9dcee; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-sisters { margin-top: 1.5rem; font-size: 0.9rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.18); margin-top: 1.4rem; padding-top: 1rem; font-size: .88rem; }

/* ---------- forms (contact) ---------- */
.form-field { margin: .9rem 0; }
.form-field label { display: block; font-weight: 600; margin-bottom: .3rem; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: .6rem .7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font);
}