/* ====================================================
   SHARED DESIGN TOKENS & COMPONENTS
   Simple Portfolio — Shriman Raghav Srinivasan
   ==================================================== */

html {
  scroll-behavior: smooth;
}

:root {
  --surface: #ffffff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f4f1;
  --surface-container: #eae8df;
  --surface-container-high: #dfdcd0;
  --on-surface: #1a1a19;
  --on-surface-variant: #52524f;
  --outline: #d2cec0;
  --outline-variant: #e8e6e1;
  --primary: #cc1414;
  --on-primary: #ffffff;
  --secondary: #cc1414;
  --secondary-container: #fae6e6;
  --on-secondary-container: #8a0b0b;
  --background: #fbfaf5;
  --on-background: #1a1a19;
  --shadow: 0px 4px 20px rgba(0,0,0,0.04);
}

body {
  background-color: var(--background);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
  color: var(--on-background);
}

html.dark body {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.02'/%3E%3C/svg%3E");
}

.dark {
  --surface: #121212;
  --surface-container-lowest: #121212;
  --surface-container-low: #1c1b1b;
  --surface-container: #1e1e1e;
  --surface-container-high: #2a2a2a;
  --on-surface: #ffffff;
  --on-surface-variant: #a0a0a0;
  --outline: #ffffff;
  --outline-variant: #2c2c2c;
  --primary: #fc4444;
  --on-primary: #111111;
  --secondary: #fc4444;
  --secondary-container: #5c0b0b;
  --on-secondary-container: #ffffff;
  --background: #000000;
  --on-background: #ffffff;
  --shadow: none;
}

body { background-color: var(--background); color: var(--on-background); }

.bento-card {
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: 1rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
.bento-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--outline);
}
.dark .bento-card:hover {
  background-color: var(--surface-container);
  border-color: #3d3d3d;
}

.chip {
  background-color: var(--surface-container);
  color: var(--on-surface-variant);
  border: 1px solid transparent;
}
.chip:hover { background-color: var(--surface-container-high); }
.chip.active {
  background-color: var(--secondary-container);
  color: var(--on-secondary-container);
  border-color: var(--outline-variant);
}

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

.section-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--on-surface-variant);
}
.section-label::before {
  content: ''; height: 1px; width: 24px;
  background-color: var(--outline-variant);
}

/* Modal */
#project-modal { display: none; opacity: 0; transition: opacity 0.3s ease; }
#project-modal.open { display: flex; opacity: 1; }

/* Mobile nav drawer */
.mobile-nav-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.mobile-nav-drawer.open {
  max-height: 400px;
}

/* Image placeholder when no image available */
.img-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, var(--surface-container-high) 0%, var(--surface-container) 100%);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--on-surface-variant);
}

/* -------------------------------------------
   CONTACT PAGE UTILITIES 
   ------------------------------------------- */
.text-gradient-animate {
  background: linear-gradient(to right, var(--primary), var(--secondary), var(--primary));
  background-size: 200% auto;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  animation: gradientShine 5s linear infinite;
}
@keyframes gradientShine {
  to { background-position: 200% center; }
}

.glass-card {
  background: color-mix(in srgb, var(--surface) 40%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid color-mix(in srgb, var(--outline) 30%, transparent);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.glass-card:hover {
  transform: translateY(-4px) scale(1.01);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.dark .glass-card:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}