:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --red: #dc2626;
  --black: #111;
  --white: #fff;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-600: #6b7280;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --whatsapp: #25d366;
  --whatsapp-dark: #1da851;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --nav-height: 64px;
}

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

html {
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font);
  color: var(--gray-900);
  line-height: 1.6;
  background: var(--white);
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--black);
}

section {
  padding: 4rem 0;
}

/* ---------- NAV ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--black);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 3px;
  border-radius: 2px;
}

.nav-toggle-bar:nth-child(1) {
  background-color: #AA151B;
}

.nav-toggle-bar:nth-child(2) {
  background-color: #F1BF00;
}

.nav-toggle-bar:nth-child(3) {
  background-color: #AA151B;
}

.nav-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--black);
  padding: 0.5rem 0;
}

.nav-menu.open {
  display: flex;
}

.nav-menu a {
  display: block;
  padding: 0.75rem 1.25rem;
  color: var(--white);
  font-size: 0.95rem;
  transition: background 0.2s;
}

.nav-menu a:hover {
  background: var(--gray-800);
}

/* ---------- HERO ---------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--black) 0%, #1a1a2e 50%, var(--black) 100%);
  padding: 5rem 1.25rem 3rem;
}

.hero-content {
  max-width: 500px;
}

.hero-logo {
  width: 180px;
  height: auto;
  margin: 0 auto 1.5rem;
}

.hero h1 {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.hero-tagline {
  font-size: 1.05rem;
  color: #9ca3af;
}

/* ---------- ABOUT ---------- */

.about {
  background: var(--white);
}

.about p {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  color: var(--gray-800);
  font-size: 1rem;
}

/* ---------- PRICES ---------- */

.prices {
  background: var(--gray-100);
}

.schedule {
  text-align: center;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--gray-200);
}

.schedule h3 {
  font-size: 1.25rem;
  color: var(--red);
  margin-bottom: 0.5rem;
}

.schedule-days {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--black);
}

.schedule-time {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue);
  margin-top: 0.25rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.pricing-category {
  grid-column: 1 / -1;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-800);
  padding: 0.75rem 0 0.25rem;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 0.25rem;
}

.pricing-category:first-of-type {
  padding-top: 0;
}

.pricing-card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  border: 1px solid var(--gray-200);
  transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card h3 {
  font-size: 1rem;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}

.pricing-card .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue);
  margin-bottom: 0.5rem;
}

.pricing-card .price-desc {
  font-size: 0.9rem;
  color: var(--gray-600);
}

.pricing-card--free {
  border-color: var(--blue);
  border-width: 2px;
}

.pricing-card--material {
  border-color: var(--gray-300);
  background: var(--white);
}

.pricing-card--material h3 {
  color: var(--gray-800);
}

.pricing-card--material .price {
  color: var(--gray-800);
  font-size: 1.5rem;
}

.pricing-card--free h3 {
  color: var(--blue);
  font-weight: 700;
}
  color: var(--blue);
  font-weight: 700;
}

.prices-note {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--gray-600);
  font-style: italic;
}

/* ---------- CALENDAR ---------- */

.cal-wrap {
  max-width: 100%;
}

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.cal-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.cal-nav-btn {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--gray-800);
  background: var(--gray-100);
  border-radius: 10px;
  white-space: nowrap;
  box-shadow:
    -4px -4px 8px rgba(255,255,255,0.8),
    4px 4px 8px rgba(0,0,0,0.06);
  transition: box-shadow 0.2s;
}

.cal-nav-btn:hover {
  box-shadow:
    -6px -6px 12px rgba(255,255,255,0.9),
    6px 6px 12px rgba(0,0,0,0.08);
}

.cal-nav-today {
  box-shadow:
    inset -3px -3px 6px rgba(255,255,255,0.7),
    inset 3px 3px 6px rgba(0,0,0,0.05);
  color: var(--blue);
  font-weight: 600;
}

.cal-nav-today:hover {
  box-shadow:
    inset -5px -5px 10px rgba(255,255,255,0.8),
    inset 5px 5px 10px rgba(0,0,0,0.07);
}

.cal-week-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-800);
}

.cal-error {
  color: var(--red);
  font-size: 0.9rem;
  text-align: center;
  padding: 1rem;
}

.cal-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 16px;
  background: var(--gray-100);
  box-shadow:
    -8px -8px 16px rgba(255,255,255,0.8),
    8px 8px 16px rgba(0,0,0,0.06);
  padding: 1px;
}

.cal-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.cal-table th,
.cal-table td {
  padding: 0;
  text-align: center;
  vertical-align: middle;
  border: 1px solid var(--gray-200);
}

.cal-th-time {
  width: 52px;
  min-width: 52px;
  background: var(--gray-100);
  font-weight: 600;
  color: var(--gray-600);
  font-size: 0.75rem;
  position: sticky;
  left: 0;
  z-index: 3;
  border-right: 2px solid var(--gray-100);
  box-shadow:
    inset -2px -2px 4px rgba(255,255,255,0.6),
    inset 2px 2px 4px rgba(0,0,0,0.04);
}

.cal-th-day {
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.5rem 0.25rem;
  line-height: 1.3;
  color: var(--gray-800);
  background: var(--gray-100);
  box-shadow:
    inset -2px -2px 4px rgba(255,255,255,0.6),
    inset 2px 2px 4px rgba(0,0,0,0.04);
}

.cal-th-today {
  color: var(--blue);
  font-weight: 700;
  box-shadow:
    inset -3px -3px 6px rgba(255,255,255,0.7),
    inset 3px 3px 6px rgba(0,0,0,0.06);
}

.cal-row-now .cal-td-time,
.cal-row-now .cal-td-slot {
  background: #eef3fc;
}

.cal-td-now {
  position: relative;
  background: #e0eaff;
  box-shadow:
    inset -3px -3px 6px rgba(255,255,255,0.7),
    inset 3px 3px 6px rgba(0,0,0,0.06);
}

.cal-now-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--red);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  display: block;
  box-shadow: 0 0 6px rgba(220,38,38,0.4);
}

.cal-date {
  font-weight: 400;
  font-size: 0.7rem;
  opacity: 0.75;
}

.cal-td-time,
.cal-td-slot {
  background: var(--white);
}

.cal-td-time {
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 0.72rem;
  font-weight: 500;
  position: sticky;
  left: 0;
  z-index: 2;
  border-right: 2px solid var(--gray-100);
}

.cal-td-slot {
  height: 32px;
  min-width: 70px;
  position: relative;
  background: var(--white);
}

.cal-event {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
  white-space: nowrap;
}

/* ---------- CONTACT ---------- */

.contact {
  background: var(--gray-100);
}

.contact-form {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.contact-form button {
  padding: 0.85rem;
  background: var(--blue);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.contact-form button:hover {
  background: var(--blue-dark);
}

/* ---------- LOCATION ---------- */

.location {
  background: var(--white);
}

.map-embed {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

#map {
  height: 400px;
  width: 100%;
  z-index: 1;
}

.address-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: 16px;
  background: var(--gray-100);
  box-shadow:
    -6px -6px 12px rgba(255,255,255,0.8),
    6px 6px 12px rgba(0,0,0,0.05);
  transition: box-shadow 0.2s;
  text-decoration: none;
}

.address-box:hover {
  box-shadow:
    -8px -8px 16px rgba(255,255,255,0.9),
    8px 8px 16px rgba(0,0,0,0.08);
}

.address-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.address-text {
  flex: 1;
  font-size: 0.95rem;
  color: var(--gray-800);
  font-weight: 500;
}

.address-arrow {
  font-size: 1.1rem;
  color: var(--blue);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.address-box:hover .address-arrow {
  transform: translateX(4px);
}

/* ---------- FOOTER ---------- */

.footer {
  background: var(--black);
  color: var(--gray-600);
  text-align: center;
  padding: 2rem 0;
  font-size: 0.9rem;
}

/* ---------- WHATSAPP FAB ---------- */

.whatsapp-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  background: var(--whatsapp);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: background 0.2s;
}

.whatsapp-fab:hover {
  background: var(--whatsapp-dark);
}

/* ---------- TABLET ---------- */

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    display: flex;
    flex-direction: row;
    position: static;
    padding: 0;
    gap: 1.5rem;
  }

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

  h2 {
    font-size: 2rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-logo {
    width: 220px;
  }
}

/* ---------- DESKTOP ---------- */

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

  .hero h1 {
    font-size: 3rem;
  }

  .hero-logo {
    width: 260px;
  }

  section {
    padding: 5rem 0;
  }
}