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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #1e293b;
  background: #f8fafc;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol { list-style: none; }

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

/* ========== CUSTOM PROPERTIES ========== */
:root {
  --color-black: #0a0a0a;
  --color-blue: #3b82f6;
  --color-blue-dark: #2563eb;
  --color-blue-light: #60a5fa;
  --color-red: #ef4444;
  --color-red-dark: #dc2626;
  --color-white: #f8fafc;
  --color-slate: #1e293b;
  --color-slate-light: #334155;
  --color-slate-lighter: #64748b;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-800: #1e293b;

  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;
  --font-6xl: 3.75rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --max-width: 1200px;
  --nav-height: 72px;

  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-slate);
}

h1 { font-size: var(--font-5xl); }
h2 { font-size: var(--font-4xl); }
h3 { font-size: var(--font-2xl); }
h4 { font-size: var(--font-xl); }

@media (max-width: 768px) {
  h1 { font-size: var(--font-4xl); }
  h2 { font-size: var(--font-3xl); }
  h3 { font-size: var(--font-xl); }
}

p {
  color: var(--color-slate-lighter);
  line-height: 1.7;
}

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

.section {
  padding: var(--space-20) 0;
}

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

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section--dark p {
  color: var(--color-gray-300);
}

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

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

.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: 768px) {
  .grid--2, .grid--3, .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid--3, .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--font-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn--primary:hover {
  background: var(--color-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--color-blue);
  border: 2px solid var(--color-blue);
}

.btn--secondary:hover {
  background: var(--color-blue);
  color: white;
}

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

.btn--white:hover {
  background: var(--color-gray-100);
  transform: translateY(-1px);
}

.btn--large {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-lg);
  border-radius: var(--radius-lg);
}

.btn--whatsapp {
  background: #25d366;
  color: white;
}

.btn--whatsapp:hover {
  background: #20bd5a;
}

.btn--phone {
  background: var(--color-slate);
  color: white;
}

.btn--phone:hover {
  background: var(--color-slate-light);
}

/* ========== SECTION HEADERS ========== */
.section-header {
  max-width: 700px;
  margin: 0 auto var(--space-12);
  text-align: center;
}

.section-header__label {
  display: inline-block;
  font-size: var(--font-sm);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-4);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--font-lg);
  color: var(--color-slate-lighter);
}

/* ========== CARDS ========== */
.card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.card__body {
  padding: var(--space-6);
}

.card__title {
  font-size: var(--font-xl);
  margin-bottom: var(--space-2);
}

.card__text {
  font-size: var(--font-sm);
  color: var(--color-slate-lighter);
  margin-bottom: var(--space-4);
}

/* ========== NAVBAR ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-base);
}

.nav--transparent {
  background: transparent;
}

.nav--solid {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

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

.nav__logo {
  height: 36px;
}

.nav__links {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.nav__link {
  font-size: var(--font-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link--active {
  color: white;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-blue);
  transition: width var(--transition-fast);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__cta {
  padding: var(--space-2) var(--space-6);
  font-size: var(--font-sm);
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  margin: 5px 0;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-8);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .nav__links--open {
    transform: translateX(0);
  }

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

/* ========== FOOTER ========== */
.footer {
  background: var(--color-black);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

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

.footer__brand-desc {
  font-size: var(--font-sm);
  color: var(--color-slate-lighter);
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer__heading {
  font-size: var(--font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: white;
  margin-bottom: var(--space-4);
}

.footer__link {
  display: block;
  font-size: var(--font-sm);
  color: var(--color-slate-lighter);
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-8);
  text-align: center;
  font-size: var(--font-xs);
  color: var(--color-slate-lighter);
}

/* ========== COMPREHENSIVE MOBILE RESPONSIVE ========== */
@media (max-width: 768px) {
  /* Inline grid overrides */
  [style*="grid-template-columns: 1fr 1fr"],
  [style*="grid-template-columns:1fr 1fr"] {
    display: grid !important;
    grid-template-columns: 1fr !important;
  }

  [style*="order:1"], [style*="order: 1"],
  [style*="order:2"], [style*="order: 2"] {
    order: 0 !important;
  }

  /* Sections reduced padding */
  .section {
    padding: var(--space-12) 0;
  }

  /* Hero adjustments */
  .hero h1 {
    font-size: var(--font-3xl) !important;
  }

  .hero p {
    font-size: var(--font-base) !important;
  }

  /* Buttons stack on mobile */
  [style*="display:flex"][style*="justify-content:center"] {
    flex-direction: column !important;
    align-items: center !important;
  }

  .btn--large {
    width: 100%;
    max-width: 320px;
  }

  /* Cards full width */
  .card__image {
    aspect-ratio: 16/9;
  }

  /* Section headers */
  .section-header {
    margin-bottom: var(--space-8);
  }

  /* Contact form grid */
  [style*="grid-template-columns:1fr 1fr"][style*="align-items:start"] {
    grid-template-columns: 1fr !important;
  }

  /* Trust bar stack */
  [style*="display:flex"][style*="justify-content:center"][style*="flex-wrap:wrap"] {
    flex-direction: column !important;
    align-items: center !important;
    gap: var(--space-4) !important;
  }

  /* Process step numbers */
  .grid--4 {
    gap: var(--space-6);
  }

  /* Gallery filters wrap nicely */
  [style*="display:flex"][style*="justify-content:center"][style*="gap:var(--space-2)"] {
    gap: var(--space-2) !important;
  }

  /* Coverage cards */
  .card[style*="padding:var(--space-8)"] {
    padding: var(--space-6) !important;
  }

  /* Contact cards grid */
  .grid--3 {
    gap: var(--space-4);
  }

  /* Footer */
  .footer {
    padding: var(--space-12) 0 var(--space-6);
  }

  .footer__brand-desc {
    max-width: 100%;
  }

  /* Inline flex gaps */
  [style*="gap:var(--space-12)"] {
    gap: var(--space-6) !important;
  }

  /* Before/after sliders */
  .ba-slider {
    aspect-ratio: 16/10;
  }

  .ba-slider__after {
    height: 100%;
    object-fit: cover;
  }

  /* Image border radius consistency */
  [style*="border-radius:var(--radius-lg)"] img {
    border-radius: var(--radius-md);
  }
}

/* Small phones */
@media (max-width: 480px) {
  h1 { font-size: var(--font-3xl); }
  h2 { font-size: var(--font-2xl); }
  h3 { font-size: var(--font-lg); }

  .container {
    padding: 0 var(--space-4);
  }

  .btn {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-sm);
  }

  .btn--large {
    padding: var(--space-3) var(--space-8);
    font-size: var(--font-base);
  }

  .nav__logo {
    height: 28px;
  }

  /* Contact card stack vertical */
  .contact-card {
    flex-direction: column !important;
    text-align: center;
  }

  .contact-card__icon {
    margin: 0 auto;
  }
}