/* ============================================================
   iPravo — IP 상표 검출 SaaS landing
   Modern global-SaaS aesthetic (Toss / fintech dashboard vibe)
   White + dark navy base · tech blue / smart purple accents
   ============================================================ */

:root {
  --white:    #FFFFFF;
  --bg:       #FFFFFF;
  --bg-soft:  #F8FAFC;   /* slate-50  */
  --bg-soft2: #F1F5F9;   /* slate-100 */
  --navy:     #0F172A;   /* slate-900 */
  --navy-2:   #1E293B;   /* slate-800 */
  --text:     #0F172A;
  --muted:    #64748B;   /* slate-500 */
  --muted-2:  #94A3B8;   /* slate-400 */
  --border:   #E2E8F0;   /* slate-200 */
  --blue:     #2563EB;
  --blue-dark:#1D4ED8;
  --blue-soft:#EFF4FF;
  --purple:   #7C3AED;
  --grad:     linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);

  --r-sm: 8px;
  --r:    12px;
  --r-lg: 20px;
  --r-xl: 28px;

  --sh-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.05);
  --sh-md: 0 4px 12px rgba(15,23,42,.06), 0 12px 28px -12px rgba(15,23,42,.12);
  --sh-lg: 0 12px 40px -8px rgba(37,99,235,.18), 0 8px 20px -10px rgba(15,23,42,.12);
  --sh-blue: 0 8px 22px -6px rgba(37,99,235,.45);

  --font: "Pretendard", "Inter", system-ui, -apple-system, sans-serif;
  --maxw: 1120px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.011em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
::selection { background: rgba(37,99,235,.16); }

/* soft gradient glow behind hero */
.bg-glow {
  position: absolute; top: -220px; left: 50%; transform: translateX(-50%);
  width: 1100px; height: 720px; z-index: 0; pointer-events: none;
  background:
    radial-gradient(closest-side, rgba(37,99,235,.16), transparent 70%) -180px 40px / 620px 520px no-repeat,
    radial-gradient(closest-side, rgba(124,58,237,.14), transparent 70%) 240px -20px / 620px 520px no-repeat;
  filter: blur(8px);
}

.nav, main, .footer { position: relative; z-index: 1; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto;
  padding: 1.3rem clamp(1.2rem, 4vw, 2rem);
}
.brand { display: flex; align-items: center; gap: .55rem; }
.brand-mark { display: grid; place-items: center; }
.brand-name { font-weight: 700; font-size: 1.2rem; letter-spacing: -.02em; }
.nav-links { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 1.8rem); }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--muted); transition: color .18s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: .6rem 1.1rem; border-radius: var(--r-sm);
  background: var(--navy); color: #fff !important; font-weight: 600;
  transition: transform .18s var(--ease), background .18s;
}
.nav-cta:hover { background: var(--navy-2); transform: translateY(-1px); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  font-family: inherit; font-weight: 600; font-size: 1rem; cursor: pointer;
  border: none; border-radius: var(--r);
  padding: .9rem 1.5rem;
  transition: transform .18s var(--ease), box-shadow .2s, background .2s, filter .2s;
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: var(--sh-blue); }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 12px 28px -6px rgba(37,99,235,.5); }
.btn-primary:active { transform: translateY(0); }
.btn-block { width: 100%; padding: 1rem; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  max-width: 880px; margin: 0 auto;
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.2rem, 4vw, 2rem) clamp(3rem, 6vw, 4.5rem);
  text-align: center;
}
.badge {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .82rem; font-weight: 600; color: var(--blue);
  background: var(--blue-soft); border: 1px solid #DBE6FF;
  padding: .45rem .9rem; border-radius: 999px; margin-bottom: 1.8rem;
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--blue);
  box-shadow: 0 0 0 0 rgba(37,99,235,.5); animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(37,99,235,.45); }
  70% { box-shadow: 0 0 0 7px rgba(37,99,235,0); }
  100% { box-shadow: 0 0 0 0 rgba(37,99,235,0); }
}

.hero-title {
  font-size: clamp(2.3rem, 6vw, 4rem);
  font-weight: 800; line-height: 1.12; letter-spacing: -.035em;
  margin-bottom: 1.4rem;
}
.grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: var(--muted);
  max-width: 38ch; margin: 0 auto 2.4rem; line-height: 1.65;
}

/* ---------- search bar (single, clean) ---------- */
.search {
  display: flex; align-items: center; gap: .5rem;
  max-width: 600px; margin: 0 auto;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: .5rem .5rem .5rem 1.1rem;
  box-shadow: var(--sh-md);
  transition: box-shadow .25s, border-color .25s, transform .25s;
}
.search:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12), var(--sh-lg);
  transform: translateY(-2px);
}
.search-icon { color: var(--muted-2); display: grid; place-items: center; flex-shrink: 0; }
.search input {
  flex: 1; min-width: 0; border: none; outline: none; background: transparent;
  font-family: inherit; font-size: 1.02rem; color: var(--text); padding: .6rem 0;
}
.search input::placeholder { color: var(--muted-2); }
.search-btn { flex-shrink: 0; border-radius: var(--r); padding: .85rem 1.3rem; }

.search-hint { font-size: .85rem; color: var(--muted-2); margin: 1rem 0 0; }

/* ---------- trust strip ---------- */
.trust {
  display: inline-flex; align-items: center; gap: clamp(1rem, 3vw, 2rem);
  margin-top: 2.8rem; padding: 1rem 1.6rem;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--r);
}
.trust-item { display: flex; flex-direction: column; text-align: center; }
.trust-item strong { font-weight: 700; font-size: 1.05rem; color: var(--text); }
.trust-item span { font-size: .82rem; color: var(--muted); }
.trust-divider { width: 1px; height: 28px; background: var(--border); }

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(4rem, 9vw, 7rem) clamp(1.2rem, 4vw, 2rem);
}
.section-head { margin-bottom: clamp(2.4rem, 5vw, 3.4rem); }
.section-head.center { text-align: center; max-width: 30ch; margin-left: auto; margin-right: auto; }
.eyebrow {
  font-size: .8rem; font-weight: 700; letter-spacing: .14em;
  color: var(--blue); text-transform: uppercase; margin-bottom: .9rem;
}
.eyebrow.light { color: #93B4FF; }
.section-title {
  font-size: clamp(1.7rem, 3.8vw, 2.6rem); font-weight: 800;
  line-height: 1.18; letter-spacing: -.03em;
}
.section-title.light { color: #fff; }

/* ---------- feature cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 2rem 1.8rem; box-shadow: var(--sh-sm);
  transition: transform .25s var(--ease), box-shadow .25s, border-color .25s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); border-color: #CBD5E1; }
.card-icon {
  display: grid; place-items: center; width: 48px; height: 48px;
  border-radius: var(--r); margin-bottom: 1.3rem;
}
.i-blue { background: var(--blue-soft); color: var(--blue); }
.i-purple { background: #F3EDFF; color: var(--purple); }
.card h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: .6rem; }
.card p { color: var(--muted); font-size: .97rem; }

/* ---------- how it works (dark) ---------- */
.how {
  max-width: none; padding-left: 0; padding-right: 0;
  background: var(--navy);
  border-radius: var(--r-xl);
  margin: 0 clamp(.8rem, 3vw, 2rem);
}
.how-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 5.5rem) clamp(1.4rem, 4vw, 3rem);
  display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.how .section-head { margin-bottom: 0; }
.steps { display: grid; gap: 1rem; }
.step {
  display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; align-items: center;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r); padding: 1.3rem 1.5rem;
  transition: background .2s, transform .2s var(--ease);
}
.step:hover { background: rgba(255,255,255,.07); transform: translateX(4px); }
.step-no {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px;
  background: var(--grad); color: #fff; font-weight: 800; font-size: 1rem;
  font-family: "Inter", sans-serif;
}
.step h3 { color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: .2rem; }
.step p { color: #94A3B8; font-size: .92rem; }

/* ============================================================
   APPLY / FORM
   ============================================================ */
.apply { }
.apply-card {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: clamp(2rem, 5vw, 3.6rem);
}
.apply-desc { color: var(--muted); margin: 1.2rem 0 1.6rem; font-size: 1.05rem; max-width: 40ch; }
.apply-desc strong { color: var(--text); font-weight: 600; }
.apply-notes { display: grid; gap: .6rem; }
.apply-notes li {
  position: relative; padding-left: 1.6rem; font-size: .9rem; color: var(--muted);
}
.apply-notes li::before {
  content: ""; position: absolute; left: 0; top: .15rem;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 11px no-repeat;
}

.apply-form-wrap { position: relative; }
.apply-form {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: clamp(1.6rem, 4vw, 2.2rem); box-shadow: var(--sh-md);
}
.field { display: block; margin-bottom: 1.1rem; }
.field-label { display: block; font-size: .88rem; font-weight: 600; color: var(--navy-2); margin-bottom: .5rem; }
.field input {
  width: 100%; font-family: inherit; font-size: 1rem; color: var(--text);
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--r);
  padding: .85rem 1rem; transition: border-color .18s, box-shadow .18s, background .18s;
}
.field input::placeholder { color: var(--muted-2); }
.field input:focus {
  outline: none; background: #fff; border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
.consent {
  display: flex; gap: .6rem; align-items: flex-start;
  font-size: .9rem; color: var(--muted); margin: 1.2rem 0 1.4rem; cursor: pointer;
}
.consent input { margin-top: .15rem; width: 1.1rem; height: 1.1rem; accent-color: var(--blue); flex-shrink: 0; }
.form-error { color: #DC2626; font-size: .88rem; font-weight: 500; text-align: center; margin-top: .8rem; min-height: 1.2em; }

/* success */
.form-success {
  position: absolute; inset: 0;
  display: grid; place-content: center; justify-items: center; text-align: center; gap: .4rem;
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  box-shadow: var(--sh-md); padding: 2rem;
  animation: fade-in .4s var(--ease);
}
.form-success[hidden] { display: none; }
.success-check {
  display: grid; place-items: center; width: 64px; height: 64px; border-radius: 50%;
  background: var(--blue-soft); color: var(--blue); margin-bottom: .8rem;
  animation: pop .45s var(--ease) both;
}
@keyframes pop { 0% { transform: scale(.4); opacity: 0; } 60% { transform: scale(1.08); } 100% { transform: scale(1); opacity: 1; } }
.form-success h3 { font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; }
.form-success p { color: var(--muted); max-width: 28ch; }
.success-fine { font-size: .82rem; color: var(--muted-2) !important; margin-top: .3rem; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  max-width: var(--maxw); margin: 0 auto;
  padding: 3rem clamp(1.2rem, 4vw, 2rem) 4rem;
  border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
}
.footer-brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; }
.footer-copy, .footer-links { font-size: .88rem; color: var(--muted-2); }
.footer-links a { color: var(--muted); transition: color .18s; }
.footer-links a:hover { color: var(--blue); }
.dot { margin: 0 .4em; color: var(--muted-2); }

/* ============================================================
   REVEAL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.hero .reveal:nth-child(1) { transition-delay: .02s; }
.hero .reveal:nth-child(2) { transition-delay: .08s; }
.hero .reveal:nth-child(3) { transition-delay: .16s; }
.hero .reveal:nth-child(4) { transition-delay: .24s; }
.hero .reveal:nth-child(5) { transition-delay: .3s; }
.hero .reveal:nth-child(6) { transition-delay: .38s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 880px) {
  .cards { grid-template-columns: 1fr; }
  .how-inner { grid-template-columns: 1fr; }
  .apply-card { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-cta) { display: none; }
}
@media (max-width: 560px) {
  .search { flex-wrap: wrap; padding: 1rem; gap: .8rem; }
  .search input { flex-basis: 100%; padding: .2rem 0; }
  .search-btn { width: 100%; }
  .search-icon { display: none; }
  .trust { flex-wrap: wrap; justify-content: center; gap: 1rem 1.4rem; }
  .trust-divider { display: none; }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}
:focus-visible { outline: 2.5px solid var(--blue); outline-offset: 2px; border-radius: 4px; }