/* ============================================================
   SOLUTIONS PRODIGY — /pro (enterprise-safe, Apple-clean)
   ============================================================ */

:root {
  color-scheme: light;
  --bg:         #ffffff;
  --bg-soft:    #f5f5f7;
  --bg-card:    #ffffff;
  --fg:         #1d1d1f;
  --fg-soft:    #515154;
  --fg-mute:    #86868b;
  --border:     #d2d2d7;
  --accent:     #0071e3;
  --accent-hi:  #0077ed;
  --ok:         #037c3a;
  --err:        #b3261e;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Inter", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); text-decoration: underline; }

h1, h2, h3, h4 {
  color: var(--fg);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}

/* ---------- Topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  color: var(--fg);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--fg); text-decoration: none; }
.topbar nav { display: flex; gap: 28px; }
.topbar nav a {
  color: var(--fg-soft);
  font-size: 15px;
}
.topbar nav a:hover { color: var(--fg); text-decoration: none; }

/* ---------- Hero ---------- */

.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 100px 24px 80px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(36px, 5.5vw, 64px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: var(--fg);
}
.hero-sub {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--fg-soft);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.45;
  text-wrap: pretty;
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.btn.primary {
  background: var(--accent);
  color: #fff;
}
.btn.primary:hover {
  background: var(--accent-hi);
  color: #fff;
  text-decoration: none;
}
.btn.ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn.ghost:hover {
  background: rgba(0,113,227,0.06);
  color: var(--accent);
  text-decoration: none;
}

/* ---------- Sections ---------- */

section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
}
section h2 {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.02em;
  margin-bottom: 36px;
  text-align: center;
}

/* ---------- Services ---------- */

.services {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 780px) {
  .cards { grid-template-columns: 1fr; }
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}
.card p {
  color: var(--fg-soft);
  margin: 0 0 16px;
}
.card ul {
  padding-left: 20px;
  margin: 0;
  color: var(--fg-soft);
}
.card li { margin: 6px 0; }

/* ---------- Why ---------- */

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 60px;
}
@media (max-width: 780px) {
  .why-grid { grid-template-columns: 1fr; gap: 32px; }
}
.why-grid h3 {
  font-size: 20px;
  margin-bottom: 8px;
  letter-spacing: -0.015em;
}
.why-grid p {
  color: var(--fg-soft);
  margin: 0;
}
.why-grid em {
  font-style: italic;
  color: var(--fg);
}

/* ---------- Contact ---------- */

.contact {
  background: var(--bg-soft);
  border-radius: 24px;
  margin-top: 40px;
  margin-bottom: 40px;
  max-width: 780px;
}
.contact h2 { text-align: left; margin-bottom: 12px; }
.contact-sub {
  color: var(--fg-soft);
  margin: 0 0 28px;
}

.contact-form { display: block; }
.contact-form label {
  display: block;
  margin-bottom: 18px;
}
.contact-form label > span {
  display: block;
  font-size: 14px;
  color: var(--fg-soft);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.contact-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 600px) {
  .contact-form .row { grid-template-columns: 1fr; }
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--fg);
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
}
.contact-form textarea { resize: vertical; }
.contact-form button {
  margin-top: 8px;
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.flash {
  padding: 12px 16px;
  border-radius: 10px;
  margin: 0 0 20px;
  font-size: 15px;
}
.flash-ok  { background: #eafaf0; color: var(--ok);  border: 1px solid #b9e6c8; }
.flash-err { background: #fdebe9; color: var(--err); border: 1px solid #f5c7c2; }

/* ---------- Footer ---------- */

.foot {
  text-align: center;
  color: var(--fg-mute);
  font-size: 14px;
  padding: 40px 24px 60px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
.foot p { margin: 0; }