/* =============================================
   RoboWave Technologies — styles.css
   Brand: Dark Navy #0D1B2A | Medium Blue #4E85F4 | Amber #F5A623
   ============================================= */

:root {
  --navy:       #0D1B2A;
  --card-dark:  #1E2D3D;
  --card-darker:#0E1E35;
  --blue:       #4E85F4;
  --deep-blue:  #004ADF;
  --cornflower: #82ABFF;
  --amber:      #F5A623;
  --white:      #FFFFFF;
  --body-gray:  #E0E0E0;
  --pale-blue:  #C4D5FA;
}

/* ========== RESET ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--navy);
  color: var(--body-gray);
  line-height: 1.7;
  font-size: 16px;
}

/* ========== TYPOGRAPHY ========== */
h1 { color: var(--white);      font-size: 2.75rem; font-weight: 700; line-height: 1.2; }
h2 { color: var(--white);      font-size: 2rem;    font-weight: 600; line-height: 1.3; }
h3 { color: var(--cornflower); font-size: 1.2rem;  font-weight: 600; line-height: 1.4; }
p  { color: var(--body-gray);  line-height: 1.75; }
a  { color: var(--blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--cornflower); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== NAVIGATION ========== */
nav {
  background: var(--navy);
  border-bottom: 1px solid rgba(78,133,244,0.18);
  position: sticky;
  top: 0;
  z-index: 200;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  position: relative;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo-text .brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.nav-logo-text .brand-sub {
  font-size: 0.6rem;
  color: var(--pale-blue);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--body-gray);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--white); border-bottom-color: var(--amber); }

.nav-cta { flex-shrink: 0; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: 0.3s;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: opacity 0.2s, transform 0.15s, background 0.2s, color 0.2s;
  letter-spacing: 0.02em;
  text-align: center;
  font-family: inherit;
}

.btn:hover { opacity: 0.9; transform: translateY(-1px); }

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

.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
}

.btn-secondary:hover {
  border-color: var(--white);
  color: var(--white);
  opacity: 1;
}

/* ========== SECTION LABEL ========== */
.section-label {
  display: inline-block;
  color: var(--amber);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* ========== HERO (Home) ========== */
.hero {
  background: var(--navy);
  padding: 100px 24px 88px;
  text-align: center;
}

.hero .inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 { margin-bottom: 20px; }

.hero-subline {
  font-size: 1.08rem;
  color: var(--body-gray);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== PAGE HERO (inner pages) ========== */
.page-hero {
  background: var(--card-darker);
  border-bottom: 1px solid rgba(78,133,244,0.15);
  padding: 72px 24px 60px;
  text-align: center;
}

.page-hero .inner { max-width: 720px; margin: 0 auto; }
.page-hero h1 { margin-bottom: 16px; }
.page-hero .hero-subline { margin-bottom: 0; }

/* ========== STATS BAR ========== */
.stats-bar {
  background: var(--card-dark);
  border-top: 1px solid rgba(78,133,244,0.15);
  border-bottom: 1px solid rgba(78,133,244,0.15);
  padding: 28px 24px;
}

.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
}

.stat-item { text-align: center; }

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--pale-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ========== SECTIONS ========== */
.section     { background: var(--navy);      padding: 80px 24px; }
.section-alt { background: var(--card-dark); padding: 80px 24px; }

.section-header { margin-bottom: 44px; }
.section-header.centered { text-align: center; }
.section-header h2 { margin-bottom: 14px; }
.section-header p  { font-size: 1.05rem; max-width: 640px; }
.section-header.centered p { margin: 0 auto; }

/* ========== SERVICE CARDS (Home) ========== */
.service-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--card-dark);
  border: 1px solid rgba(78,133,244,0.14);
  border-radius: 10px;
  padding: 36px 28px;
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.service-card h3 {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.service-card p  { margin-bottom: 20px; font-size: 0.95rem; }

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  background: rgba(78,133,244,0.12);
  color: var(--cornflower);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.cta-link {
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 600;
}
.cta-link:hover { color: var(--cornflower); }

/* ========== VALUE PROPS (Home) ========== */
.value-props {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.value-prop {
  background: var(--card-darker);
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
  padding: 26px 22px;
}

.value-prop h3 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 9px;
}

.value-prop p { font-size: 0.92rem; }

/* ========== MISSION / VISION (About) ========== */
.mission-vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.mission-block {
  background: var(--card-darker);
  border: 1px solid rgba(78,133,244,0.18);
  border-top: 3px solid var(--blue);
  border-radius: 0 0 10px 10px;
  padding: 30px 26px;
}

.mission-block .block-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}

.mission-block p { font-size: 1rem; line-height: 1.8; }

/* ========== DIFFERENTIATORS (About) ========== */
.differentiators {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.diff-card {
  background: var(--card-darker);
  border: 1px solid rgba(78,133,244,0.13);
  border-radius: 8px;
  padding: 26px 22px;
  transition: border-color 0.2s;
}

.diff-card:hover { border-color: rgba(78,133,244,0.4); }

.diff-card h3 { color: var(--cornflower); font-size: 0.98rem; margin-bottom: 9px; }
.diff-card p  { font-size: 0.9rem; }

/* ========== ABOUT BODY TEXT ========== */
.about-body { max-width: 720px; }
.about-body p { margin-bottom: 18px; font-size: 1rem; }
.about-body p:last-child { margin-bottom: 0; }

/* ========== FEATURE LIST (Services) ========== */
.feature-list {
  list-style: none;
  margin: 18px 0 24px;
}

.feature-list li {
  padding: 9px 0 9px 26px;
  position: relative;
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(78,133,244,0.07);
}

.feature-list li:last-child { border-bottom: none; }

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
}

/* ========== SERVICE SECTION CONTENT (Services page) ========== */
.service-content { max-width: 760px; }
.service-content h2 { margin-bottom: 18px; }

.service-sub {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid rgba(78,133,244,0.13);
}

.service-sub h3 {
  color: var(--cornflower);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.service-sub p { margin-bottom: 22px; font-size: 0.95rem; }

/* ========== TEAM GRID ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.team-card {
  background: var(--card-darker);
  border: 1px solid rgba(78,133,244,0.14);
  border-radius: 10px;
  padding: 36px 26px;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

.team-card:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
}

.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.team-card h3 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.team-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 18px;
}

.team-card p {
  font-size: 0.9rem;
  line-height: 1.75;
  text-align: left;
}

/* ========== CONTACT FORM ========== */
.form-container {
  max-width: 640px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pale-blue);
  margin-bottom: 7px;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--card-dark);
  border: 1px solid rgba(78,133,244,0.22);
  border-radius: 6px;
  color: var(--white);
  font-size: 0.95rem;
  padding: 11px 14px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' viewBox='0 0 12 7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2382ABFF' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group select option { background: var(--card-dark); color: var(--white); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(78,133,244,0.12);
}

.form-group textarea { resize: vertical; min-height: 130px; }

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(224,224,224,0.28); }

.btn-full { width: 100%; padding: 13px; font-size: 1rem; }

.form-success {
  background: var(--card-dark);
  border: 1px solid rgba(78,133,244,0.25);
  border-top: 3px solid var(--blue);
  border-radius: 10px;
  padding: 36px 30px;
  text-align: center;
}

.form-success p { font-size: 1.05rem; line-height: 1.8; }

/* ========== CTA BANNER ========== */
.cta-banner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-banner h2 { margin-bottom: 14px; }
.cta-banner p  { font-size: 1.05rem; margin-bottom: 32px; }

.btn-group {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== FOOTER ========== */
footer {
  background: var(--card-darker);
  border-top: 1px solid rgba(78,133,244,0.15);
  padding: 56px 24px 28px;
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(78,133,244,0.1);
}

.footer-brand .brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--pale-blue);
  max-width: 260px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pale-blue);
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  color: var(--pale-blue);
  font-size: 0.86rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--white); }

.footer-bottom {
  max-width: 1100px;
  margin: 24px auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--pale-blue);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .nav-links,
  .nav-cta { display: none; }

  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(78,133,244,0.18);
    padding: 20px 24px 24px;
    gap: 14px;
    z-index: 199;
  }

  .nav-links.open a { font-size: 1rem; }

  .hero   { padding: 64px 24px 56px; }
  .page-hero { padding: 52px 24px 44px; }
  .section,
  .section-alt { padding: 60px 24px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 680px) {
  h1 { font-size: 1.75rem; }
  .stats-inner { flex-direction: column; align-items: center; gap: 24px; }
  .team-grid   { grid-template-columns: 1fr; }
  .value-props { grid-template-columns: 1fr; }
  .differentiators { grid-template-columns: 1fr; }
  .mission-vision-grid { grid-template-columns: 1fr; }
  .service-cards { grid-template-columns: 1fr; }
}