/* ============ CUSTOM PROPERTIES ============ */
:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-light: #555555;
  --color-white: #ffffff;
  --color-dark: #1a1a1a;
  --color-accent: #2d2d2d;
  --color-border: #e0e0e0;
  --color-tab-bg: #f5f5f5;
  --color-tab-active: #1a1a1a;
  --color-hero-overlay: rgba(0, 0, 0, 0.45);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --spacing-2xl: 96px;
  --max-width: 1100px;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ============ RESET & BASE ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============ HERO SECTION ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('assets/images/hero.jpg') center center / cover no-repeat;
  color: var(--color-white);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.35) 50%,
    rgba(0, 0, 0, 0.55) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-md);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.hero-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.brand-name {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.brand-name strong {
  font-weight: 700;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-btn {
  color: var(--color-white);
  font-size: 15px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  opacity: 0.6;
  transition: opacity 0.2s;
}

.lang-btn.active {
  opacity: 1;
}

.lang-btn:hover {
  opacity: 1;
}

.lang-sep {
  opacity: 0.5;
  font-size: 15px;
}

.hero-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 600px;
}

.hero-text h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--spacing-sm);
}

.hero-text p {
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.5;
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: 14px 28px 14px 32px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  background: var(--color-white);
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  cursor: pointer;
  border: 2px solid var(--color-white);
}

.hero-cta-arrow {
  font-size: 18px;
  transition: transform 0.2s;
}

.hero-cta-btn:hover .hero-cta-arrow {
  transform: translateX(3px);
}

.hero-cta-btn:hover {
  background: var(--color-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* ============ TABS SECTION ============ */
.tabs-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.tabs-nav {
  display: flex;
  gap: var(--spacing-xs);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch; /* iOS momentum scrolling */
  scroll-snap-type: x proximity; /* Snap scrolling on mobile */
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.tabs-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex-shrink: 0;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  background: var(--color-tab-bg);
  border-radius: var(--radius-pill);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1); /* iOS-style easing */
  white-space: nowrap;
  scroll-snap-align: center; /* Snap to center on mobile */
}

.tab-btn:hover {
  background: var(--color-border);
  transform: scale(1.02);
}

.tab-btn.active {
  background: var(--color-tab-active);
  color: var(--color-white);
  transform: scale(1.05);
}

/* ============ TAB PANELS ============ */
.tab-panel {
  display: none;
  padding-top: var(--spacing-lg);
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.tab-panel.active {
  display: block;
  animation: slideInFade 0.4s ease-out forwards;
}

@keyframes slideInFade {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.panel-inner {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.panel-image {
  flex: 0 0 40%;
  max-width: 40%;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.panel-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.panel-content {
  flex: 1;
  min-width: 0;
}

.panel-overview-title,
.panel-tips-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.panel-content p,
.panel-tips-text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  text-align: justify;
}

.panel-content ul {
  margin: 8px 0 var(--spacing-md);
  padding-left: 20px;
}

.panel-content li {
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-light);
  margin-bottom: 4px;
  text-align: justify;
}

/* ============ CTA BUTTONS ============ */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-dark);
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  margin-bottom: var(--spacing-md);
  border: 2px solid var(--color-dark);
}

.cta-btn:hover {
  background: var(--color-white);
  color: var(--color-dark);
  transform: translateY(-1px);
}

.cta-arrow {
  font-size: 18px;
  transition: transform 0.2s;
}

.cta-btn:hover .cta-arrow {
  transform: translateX(3px);
}

/* ============ GYG WIDGET SECTION ============ */
.widget-section {
  margin-top: var(--spacing-lg);
  text-align: center;
}

.widget-title {
  font-size: 18px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.widget-container {
  background: var(--color-tab-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-md);
}

.gyg-widget {
  margin: 0 auto;
}

/* ============ DISCLAIMER ============ */
.disclaimer {
  font-size: 12px;
  line-height: 1.5;
  color: var(--color-text-light);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  text-align: justify;
}

/* ============ FOOTER CTA ============ */
.footer-cta {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--color-bg);
}

.footer-emoji {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-sm);
}

.footer-question {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.cta-btn--footer {
  font-size: 14px;
}

/* ============ SITE FOOTER ============ */
.site-footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-md);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer-brand .brand-logo {
  width: 24px;
  height: 24px;
}

.footer-brand .brand-name {
  font-size: 15px;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: flex-end;
}

.footer-email {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-white);
  transition: opacity 0.2s;
}

.footer-email:hover {
  opacity: 0.8;
}

.footer-company {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

@media (max-width: 768px) {
  .footer-info {
    align-items: center;
    text-align: center;
  }
}

/* ============ COOKIE CONSENT MODAL ============ */
.cookie-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.cookie-overlay.hidden {
  display: none;
}

.cookie-modal {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-lg);
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.cookie-logo {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-sm);
}

.cookie-modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.cookie-modal-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.cookie-modal-text a {
  color: var(--color-text);
  text-decoration: underline;
}

.cookie-btn {
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}

.cookie-btn--accept {
  background: var(--color-dark);
  color: var(--color-white);
  border: 2px solid var(--color-dark);
}

.cookie-btn--accept:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .panel-inner {
    flex-direction: column;
  }

  .panel-image {
    flex: none;
    max-width: 100%;
    width: 100%;
  }

  .panel-image img {
    aspect-ratio: 16 / 9;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero-text h1 {
    font-size: 36px;
  }

  .hero-text p {
    font-size: 17px;
  }

  .tabs-section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

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

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 32px;
  }

  .hero-text p {
    font-size: 16px;
  }

  .hero-cta-btn {
    font-size: 15px;
    padding: 13px 28px;
  }

  .tab-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .cta-btn {
    padding: 12px 20px;
    font-size: 13px;
  }

  .panel-content p {
    font-size: 14px;
  }

  .footer-question {
    font-size: 18px;
  }
}