/* Common Layout - GSIS Corporate */

/* ========== Base ========== */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  word-break: keep-all;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding: var(--space-24) 0;
}

.section--gray {
  background-color: var(--color-gray-50);
}

.section--dark {
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

.section__header {
  margin-bottom: var(--space-16);
}

.section__header--center {
  text-align: center;
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-500);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-4);
}

.section__label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--color-accent-500);
}

.section--dark .section__label {
  color: var(--color-accent-400);
}

.section--dark .section__label::before {
  background: var(--color-accent-400);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-900);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.section--dark .section__title {
  color: var(--color-white);
}

.section__desc {
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
  max-width: 560px;
  line-height: var(--line-height-relaxed);
}

.section__header--center .section__desc {
  margin: 0 auto;
}

/* ========== Header ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-header);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  border-bottom-color: var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  z-index: var(--z-header);
}

.header__logo-img {
  height: 36px;
  width: auto;
  display: block;
}

.footer__logo-link {
  display: inline-block;
}

.footer__logo-img {
  height: 32px;
  width: auto;
  display: block;
  opacity: 0.9;
}

.footer__logo-img:hover {
  opacity: 1;
}

/* Legacy logo mark (kept for compatibility) */
.header__logo-mark {
  width: 32px;
  height: 32px;
  background: var(--color-primary-500);
  border-radius: var(--radius-md);
  display: none;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary-500);
}

.nav__link-arrow {
  font-size: 8px;
  transition: transform var(--transition-fast);
  margin-left: 2px;
}

.nav__item:hover .nav__link-arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.nav__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 200px;
  padding: var(--space-2);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.nav__item:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav__dropdown-link:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-500);
}

/* Header CTA */
.header__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  background: var(--color-primary-500);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  margin-left: var(--space-4);
}

.header__cta:hover {
  background: var(--color-primary-600);
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  margin-left: var(--space-3);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
}

.lang-toggle__btn {
  padding: 4px 10px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-400);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1;
  letter-spacing: 0.5px;
}

.lang-toggle__btn--active {
  color: var(--color-white);
  background: var(--color-primary-500);
}

.lang-toggle__btn:hover:not(.lang-toggle__btn--active) {
  color: var(--color-gray-700);
  background: var(--color-gray-100);
}

/* Mobile Menu Toggle */
.header__menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: var(--z-header);
}

.header__menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

.header__menu-btn--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.header__menu-btn--active span:nth-child(2) {
  opacity: 0;
}
.header__menu-btn--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== Mobile Navigation ========== */
@media (max-width: 768px) {
  .header__menu-btn {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: calc(var(--header-height) + var(--space-6)) var(--space-6) var(--space-6);
    background: var(--color-white);
    border-left: 1px solid var(--color-gray-200);
    transition: right var(--transition-base);
    overflow-y: auto;
  }

  .nav--open {
    right: 0;
  }

  .nav__link {
    padding: var(--space-4);
    font-size: var(--font-size-base);
    color: var(--color-gray-800);
    border-bottom: 1px solid var(--color-gray-100);
  }

  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: var(--color-gray-50);
    box-shadow: none;
    border: none;
    padding: 0;
    border-radius: 0;
    display: none;
  }

  .nav__item--open .nav__dropdown {
    display: block;
  }

  .nav__dropdown-link {
    color: var(--color-gray-600);
    padding-left: var(--space-8);
  }

  .header__cta {
    margin-left: 0;
    margin-top: var(--space-6);
    justify-content: center;
    padding: var(--space-4);
  }

  .lang-toggle {
    position: absolute;
    top: 50%;
    right: 52px;
    transform: translateY(-50%);
    margin-left: 0;
  }
}

/* Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: calc(var(--z-header) - 1);
}

.nav-overlay--visible {
  display: block;
}

/* ========== Main Content ========== */
.main {
  padding-top: var(--header-height);
}

/* ========== Footer ========== */
.footer {
  background: var(--color-primary-900);
  color: var(--color-gray-400);
  padding: var(--space-16) 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  width: 100%;
}

.footer__brand-desc {
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-400);
  max-width: 280px;
}

.footer__heading {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-300);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-3);
}

.footer__contact-icon {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
  color: var(--color-gray-400);
}

.footer__bottom {
  margin-top: var(--space-6);
  padding: var(--space-6) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .footer__bottom .container {
    flex-direction: column;
    gap: var(--space-3);
  }
}

/* ========== Grid System ========== */
.grid {
  display: grid;
  gap: var(--space-8);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }

  .section {
    padding: var(--space-16) 0;
  }

  .section__title {
    font-size: var(--font-size-3xl);
  }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1;
}

.btn--primary {
  color: var(--color-white);
  background: var(--color-primary-500);
}

.btn--primary:hover {
  background: var(--color-primary-600);
}

.btn--outline {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.btn--outline-dark {
  color: var(--color-primary-500);
  border-color: var(--color-primary-200);
  background: transparent;
}

.btn--outline-dark:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-500);
}

.btn--lg {
  padding: 14px var(--space-8);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
}

.btn__icon {
  width: 16px;
  height: 16px;
}

/* ========== Cards ========== */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-gray-200);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  border-color: var(--color-gray-300);
  box-shadow: var(--shadow-md);
}

.card__icon-wrap {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-primary-500);
}

.card__icon-wrap svg {
  width: 32px;
  height: 32px;
  stroke-width: 1.5;
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-900);
  margin-bottom: var(--space-3);
}

.card__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: var(--line-height-relaxed);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-500);
  transition: gap var(--transition-fast);
}

.card__link:hover {
  gap: var(--space-2);
}

/* ========== Scroll Animations ========== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-left--visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-right--visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========== Utility ========== */
.text-center { text-align: center; }
.text-white { color: var(--color-white); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}