/* =============================================
   RAJU DRIVING SCHOOL — Design System & Styles
   ============================================= */

/* ---------- CSS Variables (Light Theme) ---------- */
:root {
  --color-primary: #0f766e;
  --color-primary-dark: #0d5e57;
  --color-primary-light: #14b8a6;
  --color-primary-lighter: #ccfbf1;

  --color-bg: #ffffff;
  --color-bg-alt: #f1f5f9;
  --color-surface: #ffffff;
  --color-surface-alt: #e2e8f0;
  --color-border: #cbd5e1;

  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;

  --color-accent: #0891b2;
  --color-success: #16a34a;
  --color-warning: #d97706;

  --header-height: 70px;
  --container-max: 1140px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
}

/* ---------- Dark Theme ---------- */
[data-theme="dark"] {
  --color-primary: #14b8a6;
  --color-primary-dark: #0f766e;
  --color-primary-light: #2dd4bf;
  --color-primary-lighter: #134e4a;

  --color-bg: #0f172a;
  --color-bg-alt: #1e293b;
  --color-surface: #1e293b;
  --color-surface-alt: #334155;
  --color-border: #475569;

  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.5);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 14px 34px;
  font-size: 16px;
}

.btn--block {
  width: 100%;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: var(--shadow);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}
.logo:hover { color: var(--color-text); }
.logo img {
  border-radius: 0;
  flex-shrink: 0;
}

/* Navigation */
.nav__list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav__link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}
.nav__link:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

/* Header actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}
.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-bg-alt);
}

.theme-toggle__icon {
  width: 20px;
  height: 20px;
}

[data-theme="light"] .theme-toggle__icon--moon { display: block; }
[data-theme="light"] .theme-toggle__icon--sun { display: none; }
[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
[data-theme="dark"] .theme-toggle__icon--sun { display: block; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover {
  background: var(--color-bg-alt);
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: all var(--transition);
}

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

/* ---------- Section shared ---------- */
.section {
  padding: 100px 0;
  background: var(--color-bg);
  transition: background var(--transition);
}

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

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section__tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-primary);
  background: var(--color-primary-lighter);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section__title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--color-text);
}

.section__title--left {
  text-align: left;
}

.section__desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.section__desc a {
  font-weight: 600;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 28px;
}

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

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* Icon card */
.card--icon { text-align: left; }

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card__icon svg {
  width: 26px;
  height: 26px;
}

.card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.card__subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- Hero ---------- */
.hero {
  padding: 140px 0 80px;
  background: var(--color-bg);
  transition: background var(--transition);
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-lighter);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero__headline {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--color-text);
}

.hero__subtext {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero__badges {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 480px;
}

.hero__badge-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}
.hero__badge-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Hero visual */
.hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__illustration {
  width: 100%;
  max-width: 500px;
}

.hero__illustration svg {
  width: 100%;
  height: auto;
}

/* ---------- Pricing ---------- */
.pricing {
  align-items: start;
}

.card--pricing {
  text-align: left;
  padding: 0;
  overflow: hidden;
  position: relative;
}

.card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
  transform: scale(1.03);
}
.card--featured:hover {
  transform: scale(1.03) translateY(-2px);
}

.card__badge {
  position: absolute;
  top: 16px;
  right: -32px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 40px;
  transform: rotate(45deg);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card__header {
  padding: 28px 28px 0;
}

.card__price {
  padding: 16px 28px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.card__price-amount {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}

.card__price-dur {
  font-size: 14px;
  color: var(--color-text-muted);
}

.card__features {
  padding: 20px 28px;
  list-style: none;
}

.card__features li {
  padding: 8px 0;
  padding-left: 26px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}
.card__features li:last-child {
  border-bottom: none;
}

.card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 16px;
  height: 16px;
  background: var(--color-primary-lighter);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 8L7 11L12 5' stroke='%230f766e' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

.card--pricing .btn {
  margin: 0 28px 28px;
}

.pricing__note {
  text-align: center;
  margin-top: 32px;
  font-size: 14px;
  color: var(--color-text-muted);
}
.pricing__note a {
  font-weight: 600;
}

/* ---------- Testimonials ---------- */
.card--testimonial {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card__stars {
  color: #f59e0b;
  font-size: 18px;
  letter-spacing: 2px;
}

.card__quote {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  flex: 1;
}

.card__author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.card__author strong {
  display: block;
  font-size: 15px;
  color: var(--color-text);
}

.card__author span {
  font-size: 13px;
  color: var(--color-text-muted);
}

.card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-primary-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  color: var(--color-primary);
}
.card__avatar--1::after { content: 'PS'; }
.card__avatar--2::after { content: 'AK'; }
.card__avatar--3::after { content: 'MR'; }

/* ---------- FAQ ---------- */
.faq__list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq__item:hover {
  border-color: var(--color-primary);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  background: var(--color-surface);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition);
}

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

.faq__arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform var(--transition);
}

.faq__item--open .faq__arrow {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq__item--open .faq__answer {
  max-height: 300px;
}

.faq__answer p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- Contact ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.contact__text {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  line-height: 1.7;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact__detail svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact__detail strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}
.contact__detail a,
.contact__detail span {
  font-size: 15px;
  color: var(--color-text-secondary);
}
.contact__detail a:hover {
  color: var(--color-primary);
}

/* Form */
.contact__form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
}

.form__group {
  margin-bottom: 20px;
}

.form__group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
}

.form__group textarea {
  resize: vertical;
  min-height: 80px;
}

.form__footnote {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 16px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 32px;
  transition: background var(--transition);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__brand .logo {
  margin-bottom: 16px;
}

.footer__brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 280px;
}

.footer__links h4,
.footer__social h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 14px;
  color: var(--color-text-secondary);
}
.footer__links a:hover {
  color: var(--color-primary);
}

.footer__social-icons {
  display: flex;
  gap: 12px;
}

.footer__social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition);
}
.footer__social-icons a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-lighter);
}
.footer__social-icons svg {
  width: 18px;
  height: 18px;
}

.footer__bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.footer__bottom p {
  font-size: 13px;
  color: var(--color-text-muted);
}

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

  .hero__headline {
    font-size: 36px;
  }

  .card--featured {
    transform: scale(1);
  }
  .card--featured:hover {
    transform: translateY(-2px);
  }
}

@media (max-width: 868px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__visual {
    order: -1;
  }

  .hero__illustration {
    max-width: 400px;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow);
  }

  .nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 4px;
  }

  .nav__link {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
  }

  .hamburger {
    display: flex;
  }

  .header__cta {
    display: none;
  }

  .section {
    padding: 72px 0;
  }

  .section__title {
    font-size: 28px;
  }

  .hero {
    padding: 110px 0 56px;
  }

  .hero__headline {
    font-size: 30px;
  }

  .hero__ctas {
    flex-direction: column;
  }

  .hero__ctas .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__badges {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .grid--3 {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .card--pricing {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .hero__headline {
    font-size: 26px;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact__form {
    padding: 24px;
  }

  .card {
    padding: 24px;
  }
}

/* ---------- Animations ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero__content {
    animation: fadeInUp 0.8s ease;
  }

  .hero__visual {
    animation: fadeIn 1s ease 0.2s both;
  }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}