/* ============================================================
   Phase 2 – Software Development Consulting
   style.css
   ============================================================ */

/* ── Custom properties ──────────────────────────────────────── */
:root {
  --color-primary:       #2c5aa0;
  --color-primary-dark:  #1e3f73;
  --color-primary-light: #e8f0fb;
  --color-accent:        #e8a020;
  --color-bg-alt:        #f7f9fc;
  --color-text:          #1a2333;
  --color-text-muted:    #5a6a7e;
  --color-border:        #dde4ef;
  --color-white:         #ffffff;

  --font-body:    'Inter', sans-serif;
  --font-display: 'Playfair Display', serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-card: 0 2px 12px rgba(44, 90, 160, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(44, 90, 160, 0.16);
  --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.10);

  --nav-height: 68px;
  --transition: 0.25s ease;
}

/* ── Reset / Base ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

/* ── Layout primitives ──────────────────────────────────────── */
.container {
  max-width: 1120px;
  width: 100%;
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: 96px;
  background: var(--color-white);
}

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

.section__header {
  text-align: center;
  margin-bottom: 56px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  line-height: 1.2;
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.6;
}

/* ── Grid helpers ───────────────────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr));
  gap: 32px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 24px;
}

/* ── Card components ────────────────────────────────────────── */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card--hover:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.card--accent-top {
  border-top: 4px solid var(--color-primary);
}

.card--accent-top:nth-child(2) { border-top-color: var(--color-accent); }
.card--accent-top:nth-child(3) { border-top-color: #2aab78; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(44, 90, 160, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.25);
}

.btn--nav {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  padding: 10px 20px;
  font-size: 0.875rem;
}

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

/* ── Pill / tag chip ────────────────────────────────────────── */
.pill {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 5px 13px;
  border-radius: 999px;
  line-height: 1.4;
}

/* ── Stat number badge ──────────────────────────────────────── */
.stat-number {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 4px;
}

/* ── Scroll-reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
  /* Start transparent over hero */
  background: transparent;
}

.nav--scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-nav);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__wordmark {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.3px;
  transition: color var(--transition);
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__logo-icon {
  width: 50px;
  height: 50px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav--scrolled .nav__wordmark {
  color: var(--color-primary-dark);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.12);
}

.nav--scrolled .nav__link {
  color: var(--color-text);
}

.nav--scrolled .nav__link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav__hamburger:hover { background: rgba(255,255,255,0.12); }
.nav--scrolled .nav__hamburger:hover { background: var(--color-primary-light); }

.nav__hamburger-bar {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
  display: block;
}

.nav--scrolled .nav__hamburger-bar { background: var(--color-primary-dark); }

.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-nav);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid var(--color-border);
}

.nav__mobile-menu.is-open { display: flex; }

.nav__mobile-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
}

.nav__mobile-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav__mobile-cta {
  margin-top: 8px;
  text-align: center;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-primary-dark);
}

/* Diagonal blue/white split */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 55%, #d6e4f7 55%);
  z-index: 0;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  padding-top: var(--nav-height);
  width: 100%;
}

.hero__content {
  max-width: 580px;
}

.hero__photo-wrap {
  flex-shrink: 0;
}

.hero__photo {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.35);
  display: block;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero__headline2 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1.5vw, 2.75rem);
  font-weight: 200;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}


.hero__sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
  margin-bottom: 36px;
  padding-top: 0px;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero__microcopy {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
}

/* ── Services ───────────────────────────────────────────────── */
.service-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.service-card__icon svg {
  width: 26px;
  height: 26px;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.service-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ── Work / Case Studies ────────────────────────────────────── */
.work-card {
  display: flex;
  flex-direction: column;
}

.work-card__stat {
  margin-bottom: 16px;
}

.work-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
  line-height: 1.3;
}

.work-card__body {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 20px;
}

/* ── Skills ─────────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 28px;
}

.skill-category__title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.skill-category__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── About ──────────────────────────────────────────────────── */
.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about__heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 24px;
  line-height: 1.25;
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about__body p {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.about__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.about__photo-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about__photo {
  width: 300px;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card-hover);
  border: 3px solid var(--color-border);
  display: block;
}

/* Decorative CSS art for about section */
.about__art {
  position: relative;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__art-circle {
  position: absolute;
  border-radius: 50%;
  border: 2px solid var(--color-primary-light);
}

.about__art-circle:nth-child(1) {
  width: 280px;
  height: 280px;
  border-color: var(--color-primary-light);
}

.about__art-circle:nth-child(2) {
  width: 200px;
  height: 200px;
  border-color: rgba(44, 90, 160, 0.2);
  border-style: dashed;
  animation: spin 18s linear infinite;
}

.about__art-circle:nth-child(3) {
  width: 120px;
  height: 120px;
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
}

.about__art-center {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  line-height: 1;
}

.about__art-center span {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.about__art-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
}

.about__art-dot:nth-child(1) { top: 10px; left: 50%; transform: translateX(-50%); }
.about__art-dot:nth-child(2) { bottom: 10px; right: 80px; }
.about__art-dot:nth-child(3) { top: 50%; left: 5px; transform: translateY(-50%); background: var(--color-primary); }

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ── Contact ─────────────────────────────────────────────────── */
.contact {
  background: var(--color-primary-dark);
  padding-block: 96px;
  text-align: center;
  color: var(--color-white);
}

.contact__headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.contact__sub {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  max-width: 520px;
  margin-inline: auto;
  line-height: 1.6;
}

.contact__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.contact__secondary {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
}

.contact__secondary a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: #111927;
  padding-block: 20px;
  text-align: center;
}

.footer__copy {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about__layout {
    grid-template-columns: 1fr;
  }

  .about__art {
    height: 240px;
  }

  .about__art-circle:nth-child(1) { width: 200px; height: 200px; }
  .about__art-circle:nth-child(2) { width: 145px; height: 145px; }
  .about__art-circle:nth-child(3) { width: 88px; height: 88px; }
}

@media (max-width: 768px) {
  .section {
    padding-block: 64px;
  }

  .section__header {
    margin-bottom: 40px;
  }

  /* Hero: drop the clip-path split, full solid blue */
  .hero::before {
    background: var(--color-primary-dark);
    clip-path: none;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__photo {
    width: 200px;
    height: 200px;
    order: -1;
  }

  .about__photo {
    width: 220px;
    height: 220px;
  }

  /* Nav: hide links, show hamburger */
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .section {
    padding-block: 48px;
  }

  .card {
    padding: 24px;
  }

  .hero__headline {
    font-size: 2rem;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  .contact {
    padding-block: 64px;
  }
}