/* ==========================================================================
   ESTUDIO 74 - INDUSTRIAL METAMORPHOSIS DESIGN SYSTEM
   San Felipe Art District, Bogotá, Colombia
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600&family=Geist:wght@400;500;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

:root {
  --color-surface: #f9f9f9;
  --color-surface-dim: #dadada;
  --color-surface-bright: #ffffff;
  --color-surface-container: #eeeeee;
  --color-surface-container-low: #f3f3f3;
  --color-surface-container-high: #e8e8e8;
  --color-primary: #000000;
  --color-on-primary: #ffffff;
  --color-on-surface: #1a1c1c;
  --color-on-surface-variant: #444748;
  --color-secondary: #FF4F00; /* International Orange accent */
  --color-secondary-hover: #D34000;
  --color-outline: #747878;
  --color-outline-variant: #c4c7c7;
  
  --font-display: 'Hanken Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-label: 'Geist', monospace, sans-serif;
}

/* Base resets & typography rules */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* Strict 0px sharp corners per DESIGN.md */
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--color-surface);
  color: var(--color-on-surface);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

/* Typography Helpers */
.font-display-xl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.font-headline-lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.font-headline-md {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
}

.font-body-lg {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.6;
}

.font-body-md {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
}

.font-label-sm {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Structural Grids & Padding */
.rigid-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 32px;
}

@media (max-width: 768px) {
  .rigid-grid {
    grid-template-columns: repeat(4, 1fr);
    column-gap: 16px;
  }
}

.px-desktop {
  padding-left: clamp(1rem, 5vw, 4rem);
  padding-right: clamp(1rem, 5vw, 4rem);
}

.structural-line {
  height: 1px;
  background-color: var(--color-primary);
  width: 100%;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 5px;
}
::-webkit-scrollbar-track {
  background: var(--color-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
}

/* Navigation Links & Interactions */
.nav-link {
  position: relative;
  transition: color 0.3s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Custom Cursor Dot */
.custom-cursor {
  pointer-events: none;
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--color-secondary);
  border-radius: 50% !important;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease-out, opacity 0.15s ease-out;
}
.custom-cursor.active {
  transform: translate(-50%, -50%) scale(3.5);
  opacity: 0.4;
}

/* View Sections */
.view-section {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}
.view-section.active-view {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Filter Pills */
.filter-btn {
  border: 1px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  padding: 0.5rem 1.25rem;
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s ease;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.filter-btn.active {
  border-color: var(--color-secondary);
  box-shadow: inset 0 -3px 0 0 var(--color-secondary);
}

/* Hover Reveal / White Cube Mask */
.hover-reveal {
  overflow: hidden;
  position: relative;
}
.hover-reveal img {
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s ease;
}
.hover-reveal:hover img {
  transform: scale(1.05);
}

/* Brutalist Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal-box {
  background-color: var(--color-surface);
  border: 2px solid var(--color-primary);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-overlay.active .modal-box {
  transform: scale(1);
}

/* Toast Notifications */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-left: 4px solid var(--color-secondary);
  padding: 1rem 1.5rem;
  font-family: var(--font-label);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* Live Badge */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-secondary);
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.live-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--color-secondary);
  display: inline-block;
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

/* Material Symbols Overrides */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}