/* =============================================
   IKB Engineering — Main Stylesheet
   Brand: Teal #009292 | Grey #595a5a
   ============================================= */

:root {
  --teal: #009292;
  --teal-dark: #007070;
  --teal-light: #e6f5f5;
  --grey: #595a5a;
  --grey-dark: #333333;
  --grey-light: #f4f4f4;
  --white: #ffffff;
  --border: #dde4e4;
  --font-sans: 'Inter', 'Segoe UI', sans-serif;
  --max-w: 1140px;
  --radius: 4px;
  --shadow: 0 2px 16px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); color: var(--grey-dark); background: var(--white); line-height: 1.6; }
img, svg { display: block; max-width: 100%; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-dark); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- Typography ---- */
h1, h2, h3, h4 { line-height: 1.2; color: var(--grey-dark); font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }
p { color: var(--grey); }
.lead { font-size: 1.15rem; line-height: 1.7; }

/* ---- Utilities ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--teal { background: var(--teal); }
.section--light { background: var(--grey-light); }
.section--dark { background: var(--grey-dark); }
.text-center { text-align: center; }
.text-teal { color: var(--teal); }
.eyebrow { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--teal); margin-bottom: 12px; display: block; }

/* ---- Buttons ---- */
.btn { display: inline-block; padding: 13px 30px; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em; transition: background var(--transition), color var(--transition), transform var(--transition); }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--teal); color: var(--white); }
.btn--primary:hover { background: var(--teal-dark); color: var(--white); }
.btn--outline { background: transparent; color: var(--teal); border: 2px solid var(--teal); }
.btn--outline:hover { background: var(--teal); color: var(--white); }
.btn--white { background: var(--white); color: var(--teal); }
.btn--white:hover { background: var(--teal-light); color: var(--teal-dark); }
.btn--outline-white { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.6); }
.btn--outline-white:hover { background: rgba(255,255,255,0.1); color: var(--white); }

/* ---- Section Headers ---- */
.section-header { margin-bottom: 56px; }
.section-header h2 { margin-bottom: 16px; }
.section-header p { max-width: 640px; margin: 0 auto; }
.divider { width: 48px; height: 3px; background: var(--teal); margin: 16px 0 0; }
.divider--center { margin: 16px auto 0; }

/* =============================================
   NAVIGATION
   ============================================= */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.97); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); transition: box-shadow var(--transition); }
.nav.scrolled { box-shadow: var(--shadow); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.nav__logo { height: 38px; width: auto; }
.nav__links { display: flex; align-items: center; gap: 32px; }
.nav__links a { font-size: 0.9rem; font-weight: 500; color: var(--grey-dark); transition: color var(--transition); }
.nav__links a:hover, .nav__links a.active { color: var(--teal); }
.nav__cta { margin-left: 16px; }
.nav__hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.nav__hamburger span { display: block; width: 24px; height: 2px; background: var(--grey-dark); transition: var(--transition); border-radius: 2px; }

/* Mobile nav */
@media (max-width: 900px) {
  .nav__links { display: none; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--white); border-bottom: 1px solid var(--border); padding: 8px 0 16px; box-shadow: var(--shadow); }
  .nav__links.open { display: flex; }
  .nav__links a { padding: 12px 24px; width: 100%; }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
}

/* =============================================
   HERO
   ============================================= */
.hero { padding-top: 70px; min-height: 100vh; display: flex; align-items: center; background: var(--grey-dark); position: relative; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; background: linear-gradient(135deg, #1a2a2a 0%, #0d1f1f 40%, #003434 100%); }
.hero__accent { position: absolute; right: -80px; top: 50%; transform: translateY(-50%); width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(0,146,146,0.15) 0%, transparent 70%); pointer-events: none; }
.hero__content { position: relative; z-index: 1; max-width: 700px; }
.hero__tag { display: inline-block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--teal); background: rgba(0,146,146,0.12); border: 1px solid rgba(0,146,146,0.3); padding: 6px 14px; border-radius: 40px; margin-bottom: 28px; }
.hero h1 { color: var(--white); margin-bottom: 20px; }
.hero h1 span { color: var(--teal); }
.hero p { color: rgba(255,255,255,0.7); font-size: 1.15rem; margin-bottom: 36px; max-width: 560px; }
.hero__sub { color: var(--teal) !important; font-size: clamp(1rem, 2.5vw, 1.6rem) !important; font-weight: 600; letter-spacing: 0.06em; margin-bottom: 28px !important; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__tagline { margin-top: 60px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); }
.hero__tagline p { color: rgba(255,255,255,0.4); font-size: 0.8rem; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 10px; }
.hero__tagline h3 { color: var(--white); font-size: 1.4rem; font-weight: 300; letter-spacing: 0.05em; }
.hero__tagline h3 span { color: var(--teal); font-weight: 700; }

/* =============================================
   HOME – SERVICES OVERVIEW
   ============================================= */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.service-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; transition: box-shadow var(--transition), border-color var(--transition); }
.service-card:hover { box-shadow: var(--shadow); border-color: var(--teal); }
.service-card__icon { width: 48px; height: 48px; background: var(--teal-light); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.service-card__icon svg { width: 24px; height: 24px; stroke: var(--teal); fill: none; stroke-width: 1.5; }
.service-card h3 { margin-bottom: 10px; font-size: 1.05rem; }
.service-card p { font-size: 0.9rem; }

/* =============================================
   HOME – ABOUT STRIP
   ============================================= */
.about-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-strip__text h2 { margin-bottom: 20px; }
.about-strip__text p { margin-bottom: 16px; }
.about-strip__text .btn { margin-top: 8px; }
.about-strip__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.stat { text-align: center; padding: 28px 20px; border: 1px solid var(--border); border-radius: var(--radius); }
.stat__num { font-size: 2.5rem; font-weight: 700; color: var(--teal); line-height: 1; }
.stat__label { font-size: 0.85rem; color: var(--grey); margin-top: 6px; }

@media (max-width: 768px) {
  .about-strip { grid-template-columns: 1fr; gap: 40px; }
  .about-strip__stats { grid-template-columns: 1fr 1fr; }
}

/* =============================================
   HOME – CTA BANNER
   ============================================= */
.cta-banner { background: var(--teal); padding: 72px 0; text-align: center; }
.cta-banner h2 { color: var(--white); margin-bottom: 16px; }
.cta-banner p { color: rgba(255,255,255,0.8); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }

/* =============================================
   HOME – INNOVATIONS TEASER
   ============================================= */
.innovations-teaser { background: var(--grey-dark); padding: 72px 0; }
.innovations-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.innovations-inner h2 { color: var(--white); margin-bottom: 16px; }
.innovations-inner p { color: rgba(255,255,255,0.65); margin-bottom: 24px; }
.ptx-badge { display: inline-flex; align-items: center; gap: 10px; background: rgba(0,146,146,0.15); border: 1px solid rgba(0,146,146,0.3); border-radius: 6px; padding: 16px 24px; }
.ptx-badge__label { font-size: 1.4rem; font-weight: 700; color: var(--teal); }
.ptx-badge__desc { font-size: 0.85rem; color: rgba(255,255,255,0.6); }
@media (max-width: 768px) {
  .innovations-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* =============================================
   CAPABILITIES PAGE
   ============================================= */
.page-hero { padding-top: 70px; background: var(--grey-dark); padding-bottom: 64px; padding-left: 0; padding-right: 0; }
.page-hero .container { padding-top: 64px; }
.page-hero h1 { color: var(--white); margin-bottom: 16px; }
.page-hero p { color: rgba(255,255,255,0.65); max-width: 580px; }

.capabilities-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.capability-item { padding: 36px 32px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--white); transition: box-shadow var(--transition), border-color var(--transition); }
.capability-item:hover { box-shadow: var(--shadow); border-color: var(--teal); }
.capability-item__num { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; color: var(--teal); margin-bottom: 12px; }
.capability-item h3 { margin-bottom: 12px; }
.capability-item p { font-size: 0.92rem; }

/* =============================================
   ABOUT PAGE
   ============================================= */
.founder-block { display: grid; grid-template-columns: 340px 1fr; gap: 72px; align-items: start; }
.founder-card { background: var(--grey-light); border-radius: var(--radius); padding: 40px; text-align: center; }
.founder-card__avatar { width: 100px; height: 100px; border-radius: 50%; background: var(--teal); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 2rem; font-weight: 700; color: var(--white); }
.founder-card h3 { margin-bottom: 4px; }
.founder-card__creds { font-size: 0.82rem; color: var(--teal); font-weight: 600; margin-bottom: 8px; }
.founder-card__role { font-size: 0.9rem; margin-bottom: 20px; }
.founder-card__linkedin { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--teal); }
.founder-content h2 { margin-bottom: 20px; }
.founder-content p { margin-bottom: 16px; }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; margin-top: 48px; }
.value-item { padding: 28px 24px; background: var(--teal-light); border-left: 3px solid var(--teal); border-radius: var(--radius); }
.value-item h4 { color: var(--grey-dark); margin-bottom: 8px; }
.value-item p { font-size: 0.88rem; }
@media (max-width: 860px) {
  .founder-block { grid-template-columns: 1fr; gap: 40px; }
  .founder-card { max-width: 360px; }
}

/* =============================================
   PROJECTS PAGE
   ============================================= */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.project-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: box-shadow var(--transition), transform var(--transition); }
.project-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.project-card__image { height: 200px; background: var(--grey-light); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.project-card__image-placeholder { background: linear-gradient(135deg, var(--teal-light), var(--border)); width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.project-card__image-placeholder svg { width: 48px; height: 48px; stroke: var(--teal); fill: none; stroke-width: 1; opacity: 0.5; }
.project-card__type { position: absolute; top: 16px; left: 16px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; background: var(--teal); color: var(--white); padding: 4px 10px; border-radius: 40px; }
.project-card__body { padding: 28px 24px; }
.project-card__body h3 { margin-bottom: 8px; }
.project-card__body p { font-size: 0.9rem; }
.project-card__meta { display: flex; gap: 16px; margin-top: 16px; font-size: 0.8rem; color: var(--grey); }
.project-card__meta span { display: flex; align-items: center; gap: 4px; }

/* =============================================
   CONTACT PAGE
   ============================================= */
.contact-layout { display: grid; grid-template-columns: 1fr 420px; gap: 72px; align-items: start; }
.contact-form { background: var(--white); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--grey-dark); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius); font-family: inherit; font-size: 0.95rem; color: var(--grey-dark); background: var(--white); transition: border-color var(--transition), box-shadow var(--transition); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,146,146,0.1); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-item__icon { width: 44px; height: 44px; background: var(--teal-light); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-item__icon svg { width: 20px; height: 20px; stroke: var(--teal); fill: none; stroke-width: 1.5; }
.contact-info-item h4 { font-size: 0.85rem; margin-bottom: 4px; }
.contact-info-item p, .contact-info-item a { font-size: 0.92rem; color: var(--grey); }
@media (max-width: 860px) {
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

/* =============================================
   INNOVATIONS PAGE
   ============================================= */
.innovations-hero { background: var(--grey-dark); }
.ptx-section { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.ptx-visual { background: linear-gradient(135deg, #0d2222, #003434); border-radius: 8px; padding: 48px; display: flex; align-items: center; justify-content: center; min-height: 280px; }
.ptx-logo-text { font-size: 4rem; font-weight: 900; color: var(--teal); letter-spacing: 0.05em; }
.ptx-logo-sub { font-size: 0.85rem; color: rgba(255,255,255,0.4); letter-spacing: 0.2em; text-transform: uppercase; margin-top: 8px; }
.ptx-features { margin-top: 32px; display: flex; flex-direction: column; gap: 14px; }
.ptx-feature { display: flex; gap: 12px; align-items: flex-start; }
.ptx-feature__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); flex-shrink: 0; margin-top: 7px; }
.ptx-feature p { font-size: 0.92rem; }
@media (max-width: 768px) {
  .ptx-section { grid-template-columns: 1fr; gap: 40px; }
}

/* =============================================
   FOOTER
   ============================================= */
.footer { background: #111a1a; color: rgba(255,255,255,0.55); }
.footer__main { padding: 64px 0 48px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer__brand .footer__logo { height: 36px; margin-bottom: 20px; }
.footer__brand p { font-size: 0.88rem; max-width: 280px; }
.footer__tagline { font-size: 0.8rem; margin-top: 16px; color: rgba(255,255,255,0.3); letter-spacing: 0.1em; }
.footer__col h5 { color: var(--white); font-size: 0.85rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.05em; }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul li a { font-size: 0.88rem; color: rgba(255,255,255,0.5); transition: color var(--transition); }
.footer__col ul li a:hover { color: var(--teal); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.07); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; }
.footer__bottom a { color: rgba(255,255,255,0.5); }
.footer__bottom a:hover { color: var(--teal); }
@media (max-width: 860px) {
  .footer__main { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer__main { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
}