/* ==========================================================================
   Inno AI — shared stylesheet
   Colors, fonts, and spacing are placeholders (v1 structure pass).
   ========================================================================== */

:root {
  /* Placeholder palette — revisit with real branding */
  --color-primary: #4f46e5;
  --color-primary-dark: #3730a3;
  --color-accent: #f97316;
  --color-ink: #1e1b2e;
  --color-body: #4b4560;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f5fb;
  --color-border: #e4e1f0;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --max-width: 1120px;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(30, 27, 46, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  color: var(--color-ink);
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.btn {
  display: inline-block;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover { background: var(--color-primary-dark); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover { background: var(--color-bg-alt); }

/* ---------- Header / Nav ---------- */

.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  z-index: 50;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span { color: var(--color-primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-bar .nav-links li {
  display: flex;
  align-items: center;
}

.nav-links a {
  color: var(--color-body);
  font-weight: 500;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links .btn-primary,
.nav-links .btn-primary:hover,
.nav-links .btn-primary.active {
  color: #fff;
}

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

.hero {
  padding: 80px 0 64px;
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  text-align: center;
}

.hero .eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(79, 70, 229, 0.1);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 { max-width: 720px; margin-left: auto; margin-right: auto; }

.hero .lede {
  max-width: 620px;
  margin: 0 auto 28px;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

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

section {
  padding: 64px 0;
}

.section-alt { background: var(--color-bg-alt); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

/* ---------- Cards / Offerings ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card .icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.card a.card-link {
  margin-top: auto;
  font-weight: 600;
}

/* ---------- Placeholder page blocks ---------- */

.placeholder-block {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  background: var(--color-bg-alt);
  text-align: center;
  color: var(--color-body);
}

.placeholder-block strong { color: var(--color-ink); }

/* ---------- Philosophy / Why us ---------- */

.philosophy {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

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

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  max-width: 560px;
  margin: 0 auto;
}

.form-field {
  margin-bottom: 20px;
  text-align: left;
}

.form-field label {
  display: block;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

#form-success {
  display: none;
  text-align: center;
  padding: 40px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}

#form-success.visible { display: block; }

#contact-form.hidden { display: none; }

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

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--color-body);
}

.footer-inner a { color: var(--color-body); }

/* ---------- Responsive nav ---------- */

@media (max-width: 760px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }

  .nav-links.open { display: flex; }
}