/* ============================================
   GEMCON SAS — Global Design System
   Premium Architectural Aluminum & Glass
   ============================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@200;300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Primary Colors */
  --gemcon-black: #0A0A0A;
  --gemcon-charcoal: #1A1A1A;
  --gemcon-graphite: #2D2D2D;
  --gemcon-dark-surface: #111111;

  /* Accent - Gold */
  --gemcon-gold: #C5A572;
  --gemcon-gold-light: #D4B896;
  --gemcon-gold-dark: #A8854D;
  --gemcon-gold-glow: rgba(197, 165, 114, 0.15);
  --gemcon-gold-gradient: linear-gradient(135deg, #C5A572, #D4B896, #A8854D);

  /* Neutrals */
  --gemcon-white: #FAFAFA;
  --gemcon-off-white: #F5F5F5;
  --gemcon-light-gray: #E8E8E8;
  --gemcon-silver: #E0E0E0;
  --gemcon-gray: #8A8A8A;
  --gemcon-mid-gray: #555555;

  /* Functional */
  --gemcon-success: #4CAF50;
  --gemcon-error: #F44336;
  --gemcon-whatsapp: #25D366;
  --gemcon-info: #2196F3;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-accent: 'Space Grotesk', sans-serif;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;
  --space-3xl: 128px;
  --section-padding: 120px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.16);
  --shadow-xl: 0 16px 64px rgba(0,0,0,0.24);
  --shadow-gold: 0 4px 24px rgba(197, 165, 114, 0.3);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 600ms;
  --duration-slower: 800ms;

  /* Layout */
  --container-max: 1320px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --nav-height: 80px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--gemcon-white);
  background-color: var(--gemcon-black);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--duration-fast) var(--ease-out);
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

button {
  cursor: pointer;
}

/* --- Selection --- */
::selection {
  background: var(--gemcon-gold);
  color: var(--gemcon-black);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gemcon-charcoal);
}

::-webkit-scrollbar-thumb {
  background: var(--gemcon-graphite);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gemcon-gold);
}

/* --- Typography System --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 200;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
}

h4 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
}

h5 {
  font-size: 1.125rem;
  font-weight: 500;
}

h6 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--gemcon-gray);
}

.text-gold {
  color: var(--gemcon-gold);
}

.text-white {
  color: var(--gemcon-white);
}

/* Label / Overline */
.overline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gemcon-gold);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

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

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

.section--light {
  background-color: var(--gemcon-off-white);
  color: var(--gemcon-black);
}

.section--light p {
  color: var(--gemcon-mid-gray);
}

/* --- Flex & Grid Utils --- */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grid {
  display: grid;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section-header .overline {
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.1rem;
}

.section-header--left {
  text-align: left;
  margin-left: 0;
}

/* Gold Line Accent */ 
.gold-line {
  width: 60px;
  height: 2px;
  background: var(--gemcon-gold-gradient);
  margin: var(--space-md) 0;
  display: inline-block;
}

.gold-line--center {
  margin-left: auto;
  margin-right: auto;
  display: block;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 16px 36px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left var(--duration-slow) var(--ease-out);
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: var(--gemcon-gold);
  color: var(--gemcon-black);
}

.btn--primary:hover {
  background: var(--gemcon-gold-light);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--gemcon-white);
  border: 1px solid var(--gemcon-gold);
}

.btn--outline:hover {
  background: var(--gemcon-gold);
  color: var(--gemcon-black);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--gemcon-charcoal);
  color: var(--gemcon-white);
  border: 1px solid var(--gemcon-graphite);
}

.btn--dark:hover {
  background: var(--gemcon-graphite);
  border-color: var(--gemcon-gold);
}

.btn--whatsapp {
  background: var(--gemcon-whatsapp);
  color: #fff;
}

.btn--whatsapp:hover {
  background: #1DA851;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
}

.btn--sm {
  padding: 10px 24px;
  font-size: 0.75rem;
}

.btn--lg {
  padding: 20px 48px;
  font-size: 0.875rem;
}

/* Arrow icon in buttons */
.btn .arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* --- Animation Classes --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered delays */
.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 300ms; }
.delay-4 { transition-delay: 400ms; }
.delay-5 { transition-delay: 500ms; }
.delay-6 { transition-delay: 600ms; }

/* --- Image & Media --- */
.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* --- Overlay --- */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.overlay--dark {
  background: linear-gradient(180deg, 
    rgba(10,10,10,0.4) 0%, 
    rgba(10,10,10,0.7) 100%);
}

.overlay--gold {
  background: linear-gradient(135deg, 
    rgba(197,165,114,0.1) 0%, 
    rgba(10,10,10,0.8) 100%);
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gemcon-graphite), transparent);
  margin: var(--space-xl) 0;
}

/* --- Badge --- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius-full);
  background: var(--gemcon-gold-glow);
  color: var(--gemcon-gold);
  border: 1px solid rgba(197, 165, 114, 0.3);
}