/* ============================================
   CySecuLab Homepage - style.css
   Clean & Professional Design
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary: #1B3A5C;
  --primary-light: #2A5A8C;
  --accent: #00B4D8;
  --accent-hover: #0096B7;
  --bg: #FFFFFF;
  --bg-alt: #F5F7FA;
  --text: #1A1A2E;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --success: #10B981;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.10);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1200px;
  --section-gap: 100px;
  --block-gap: 48px;
  --card-gap: 24px;
  --transition: 0.3s ease;
}

/* --- Font --- */
@font-face {
  font-family: 'SUIT';
  src: url('assets/fonts/SUIT-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SUIT';
  src: url('assets/fonts/SUIT-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SUIT';
  src: url('assets/fonts/SUIT-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SUIT';
  src: url('assets/fonts/SUIT-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'SUIT', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

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

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

/* --- Section --- */
.section {
  padding: var(--section-gap) 0;
}
.section--alt {
  background: var(--bg-alt);
}

.section__header {
  text-align: center;
  margin-bottom: var(--block-gap);
}

.section__title {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.section__subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 400;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.nav--scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav__logo img {
  height: 36px;
  width: auto;
}
.nav__logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
  position: relative;
}
.nav__links a:hover,
.nav__links a.active {
  color: var(--accent);
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}

.nav__mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: var(--transition);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, #1B3A5C 0%, #2A5A8C 50%, #00B4D8 100%);
  color: #fff;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: url('assets/images/hero-bg.jpg') center/cover no-repeat;
  opacity: 0.15;
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 24px;
}
.hero__logo {
  width: 80px;
  margin: 0 auto 24px;
  filter: brightness(10);
}
.hero__title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}
.hero__tagline {
  font-size: 20px;
  font-weight: 400;
  opacity: 0.9;
  margin-bottom: 8px;
}
.hero__taglines {
  margin-bottom: 40px;
}
.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,180,216,0.3);
  color: #fff;
}
.btn--secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn--secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}
.btn--dark {
  background: var(--primary);
  color: #fff;
}
.btn--dark:hover {
  background: var(--primary-light);
  color: #fff;
}

/* --- Problem Section --- */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--card-gap);
}

.problem-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--accent);
}
.problem-card__icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.problem-card__title {
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
}
.problem-card__list {
  list-style: none;
}
.problem-card__list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.problem-card__list li:last-child {
  border-bottom: none;
}
.problem-card__list li::before {
  content: '\f071';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  color: var(--accent);
  margin-top: 4px;
  flex-shrink: 0;
}

.problem-transition {
  text-align: center;
  margin-top: var(--block-gap);
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
}

/* --- About Section --- */
.about__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.about__label {
  display: inline-block;
  background: rgba(0,180,216,0.1);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.about__text {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}
.about__badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.badge {
  display: inline-block;
  background: rgba(27,58,92,0.06);
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
}

/* --- Capabilities Section --- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--card-gap);
}

.cap-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.cap-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.cap-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0,180,216,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 24px;
  color: var(--accent);
}
.cap-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}
.cap-card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Solutions Section --- */
.solutions__tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--border);
  overflow-x: auto;
}
.solutions__tab {
  padding: 16px 24px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  white-space: nowrap;
}
.solutions__tab:hover {
  color: var(--primary);
}
.solutions__tab.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.solutions__panel {
  display: none;
  animation: fadeIn 0.3s ease;
}
.solutions__panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.solution-detail__info {
  order: 1;
}
.solution-detail__image {
  order: 2;
}
.solution-detail__image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.solution-detail__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.solution-detail__title {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}
.solution-detail__desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}
.solution-detail__features {
  list-style: none;
  margin-bottom: 24px;
}
.solution-detail__features li {
  padding: 8px 0;
  font-size: 15px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.solution-detail__features li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--success);
  font-size: 14px;
  margin-top: 3px;
  flex-shrink: 0;
}
.solution-detail__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Solutions Accordion (mobile) */
.solutions__accordion {
  display: none;
}
.accordion-item {
  border-bottom: 1px solid var(--border);
}
.accordion-trigger {
  width: 100%;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
}
.accordion-trigger__icon {
  transition: transform var(--transition);
  font-size: 14px;
  color: var(--text-secondary);
}
.accordion-item.open .accordion-trigger__icon {
  transform: rotate(180deg);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.accordion-content__inner {
  padding-bottom: 24px;
}

/* --- Achievements Section --- */
.achievements__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
  margin-bottom: var(--block-gap);
}
.stat-card {
  text-align: center;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 40px 28px;
  box-shadow: var(--shadow);
}
.stat-card__number {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-card__label {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}
.stat-card__detail {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Team Section --- */
.team__ceo {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow);
  margin-bottom: var(--block-gap);
}
.team__ceo-photo {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 3/4;
  object-fit: cover;
}
.team__ceo-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}
.team__ceo-name {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}
.team__ceo-credentials {
  list-style: none;
  margin-bottom: 20px;
}
.team__ceo-credentials li {
  padding: 4px 0;
  font-size: 15px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.team__ceo-credentials li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.team__ceo-fields {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}
.team-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  text-align: center;
}
.team-card__avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
}
.team-card__degree {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}
.team-card__field {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.team-card__highlight {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  background: rgba(0,180,216,0.08);
  padding: 6px 12px;
  border-radius: 6px;
  display: inline-block;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-info__icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0,180,216,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 18px;
  flex-shrink: 0;
}
.contact-info__label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.contact-info__value {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
}

.contact-form {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Footer --- */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 48px 0;
  text-align: center;
}
.footer__logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer__text {
  font-size: 14px;
  margin-bottom: 8px;
}
.footer__copyright {
  font-size: 13px;
  opacity: 0.6;
  margin-top: 20px;
}

/* --- Scroll Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .cap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 64px;
    --block-gap: 32px;
  }

  .section__title {
    font-size: 26px;
  }
  .section__subtitle {
    font-size: 16px;
  }

  /* Nav mobile */
  .nav__links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }
  .nav__links.open {
    display: flex;
  }
  .nav__mobile-toggle {
    display: block;
  }

  /* Hero */
  .hero__title {
    font-size: 32px;
  }
  .hero__tagline {
    font-size: 16px;
  }

  /* Problem */
  .problem-grid {
    grid-template-columns: 1fr;
  }

  /* Capabilities */
  .cap-grid {
    grid-template-columns: 1fr;
  }

  /* Solutions: tabs -> accordion */
  .solutions__tabs,
  .solutions__panels {
    display: none;
  }
  .solutions__accordion {
    display: block;
  }

  /* Solution detail */
  .solution-detail {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .solution-detail__image {
    order: 1;
  }
  .solution-detail__info {
    order: 2;
  }

  /* Stats */
  .achievements__stats {
    grid-template-columns: 1fr;
  }

  /* Team */
  .team__ceo {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 32px;
  }
  .team__ceo-photo {
    max-width: 200px;
    margin: 0 auto;
  }
  .team__ceo-credentials li {
    justify-content: center;
  }
  .team__ceo-fields {
    justify-content: center;
  }
  .team__grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Stat card */
  .stat-card__number {
    font-size: 36px;
  }
}