/* =========================================================
   GRUPO INMOBILIARIO BUSTAMANTE
   DESIGN SYSTEM V1
   HTML / CSS / JS Landing Page
   ========================================================= */

/* Google Fonts
   Producción: más adelante podemos cambiar esto por <link> en <head>
   o self-hosting para optimizar rendimiento.
*/
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500&family=Montserrat:wght@400;500;600&display=swap');

:root {
  /* ---------------------------------------------------------
     TYPOGRAPHY
     --------------------------------------------------------- */
  --font-display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Montserrat", Arial, Helvetica, sans-serif;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;

  /* Fluid type scale */
  --fs-xs: 0.75rem;      /* 12px */
  --fs-sm: 0.875rem;     /* 14px */
  --fs-base: 1rem;       /* 16px */
  --fs-md: 1.125rem;     /* 18px */
  --fs-lg: 1.25rem;      /* 20px */
  --fs-xl: 1.5rem;       /* 24px */

  --fs-h3: clamp(2rem, 3vw, 2.75rem);
  --fs-h2: clamp(2.5rem, 4vw, 3.375rem);
  --fs-h1: clamp(3rem, 5vw, 4.25rem);

  /* ---------------------------------------------------------
     COLOR SYSTEM
     --------------------------------------------------------- */
  --color-navy: #002250;
  --color-navy-dark: #011635;
  --color-text: #08284d;

  --color-aqua: #8fd7dc;
  --color-aqua-light: #c6edf0;

  --color-white: #ffffff;
  --color-gray-100: #eeeeee;
  --color-gray-200: #dcdcdc;
  --color-ice: #e3f2fa;

  --color-border: rgba(0, 34, 80, 0.12);
  --color-overlay: rgba(1, 22, 53, 0.28);

  /* ---------------------------------------------------------
     LAYOUT
     --------------------------------------------------------- */
  --container-max: 1200px;
  --container-gutter-desktop: 32px;
  --container-gutter-tablet: 24px;
  --container-gutter-mobile: 20px;

  --grid-gap: 24px;

  /* ---------------------------------------------------------
     SPACING SYSTEM — 8px BASE
     --------------------------------------------------------- */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 80px;
  --space-8: 96px;
  --space-9: 120px;
  --space-10: 144px;

  /* ---------------------------------------------------------
     COMPONENT TOKENS
     --------------------------------------------------------- */
  --section-padding: 104px;
  --section-padding-mobile: 72px;

  --button-height: 44px;
  --button-padding-x: 28px;

  --radius-none: 0;
  --radius-sm: 2px;
  --radius-md: 4px;

  --transition-fast: 180ms ease;
  --transition-base: 260ms ease;
}

/* =========================================================
   RESET / BASE
   ========================================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img {
  width: 100%;
  height: auto;
}

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

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

::selection {
  background: var(--color-aqua-light);
  color: var(--color-navy-dark);
}

/* =========================================================
   TYPOGRAPHY
   ========================================================= */

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin-top: 0;
}

h1,
h2,
h3,
.display-title {
  font-family: var(--font-display);
  color: var(--color-text);
  font-weight: var(--fw-regular);
  letter-spacing: -0.02em;
}

h1,
.display-h1 {
  margin-bottom: var(--space-3);
  font-size: var(--fs-h1);
  line-height: 0.98;
}

h2,
.display-h2 {
  margin-bottom: var(--space-3);
  font-size: var(--fs-h2);
  line-height: 1.03;
}

h3,
.display-h3 {
  margin-bottom: var(--space-2);
  font-size: var(--fs-h3);
  line-height: 1.07;
}

h4 {
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--fs-lg);
  line-height: 1.25;
  font-weight: var(--fw-medium);
  color: var(--color-text);
}

p {
  margin-bottom: var(--space-2);
}

.body-lg {
  font-size: var(--fs-md);
  line-height: 1.65;
}

.body-sm {
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.eyebrow {
  margin-bottom: var(--space-1);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: var(--fw-regular);
  line-height: 1.2;
  color: var(--color-aqua);
}

.nav-text,
.button-text,
.label-text {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.03em;
}

/* =========================================================
   LAYOUT UTILITIES
   ========================================================= */

.container {
  width: min(
    var(--container-max),
    calc(100% - (var(--container-gutter-desktop) * 2))
  );
  margin-inline: auto;
}

.section {
  padding-block: var(--section-padding);
}

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

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

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--grid-gap);
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
  display: inline-flex;
  min-height: var(--button-height);
  align-items: center;
  justify-content: center;
  padding-inline: var(--button-padding-x);

  border: 1px solid transparent;
  border-radius: var(--radius-none);

  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;

  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast);
}

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

.btn--navy:hover {
  background: var(--color-navy-dark);
}

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

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

.btn--outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--outline:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

/* =========================================================
   ACCENTS / DIVIDERS
   ========================================================= */

.accent-line {
  display: block;
  width: 44px;
  height: 1px;
  margin-top: var(--space-1);
  background: var(--color-aqua);
}

.divider {
  width: 100%;
  height: 1px;
  border: 0;
  background: var(--color-border);
}

.number-accent {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 4rem);
  font-weight: var(--fw-regular);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-aqua);
}

/* =========================================================
   IMAGE SYSTEM
   ========================================================= */

.media {
  overflow: hidden;
  border-radius: var(--radius-none);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--landscape {
  aspect-ratio: 16 / 10;
}

.media--portrait {
  aspect-ratio: 4 / 5;
}

.media--square {
  aspect-ratio: 1;
}

/* =========================================================
   FORM BASE
   ========================================================= */

.form-field {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;

  border: 1px solid rgba(0, 34, 80, 0.16);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.9);

  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-sm);

  outline: none;
  transition: border-color var(--transition-fast);
}

.form-field:focus {
  border-color: var(--color-aqua);
}

textarea.form-field {
  min-height: 130px;
  resize: vertical;
}

/* =========================================================
   ACCESSIBILITY
   ========================================================= */

:focus-visible {
  outline: 2px solid var(--color-aqua);
  outline-offset: 3px;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 992px) {
  .container {
    width: calc(100% - (var(--container-gutter-tablet) * 2));
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: var(--section-padding-mobile);
    --grid-gap: 20px;
  }

  .container {
    width: calc(100% - (var(--container-gutter-mobile) * 2));
  }

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

@media (max-width: 480px) {
  .btn {
    min-height: 46px;
  }
}