/* ==========================================================================
   SOHAIB AHMER AVANT-GARDE MASTER PORTFOLIO HUB (design.sohaibahmer.in)
   Designer: Sohaib Ahmer (NID Postgraduate Alumnus)
   Typography: Refined Slim Proportions with Plus Jakarta Sans & Inter
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Avant-Garde Obsidian Velvet (Dark Mode) */
  --bg-canvas: #0D0F14;
  --bg-surface: #151821;
  --bg-surface-hover: #1E2330;
  --bg-card: rgba(21, 24, 33, 0.85);
  --bg-subcard: rgba(255, 255, 255, 0.03);

  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-medium: rgba(224, 90, 71, 0.4);
  --border-focus: #E05A47;

  --accent-brand: #E05A47; /* Warm Terracotta */
  --accent-brand-glow: rgba(224, 90, 71, 0.25);
  --accent-cobalt: #3B82F6;
  --accent-sage: #30D158;
  --accent-amber: #FFD60A;

  --text-primary: #F7F5F0;
  --text-secondary: #A3A8B8;
  --text-tertiary: #6E7485;

  /* Refined, Slim-Proportion Typography Tokens */
  --font-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-subtle: 0 12px 36px rgba(0, 0, 0, 0.45);
  --shadow-hover: 0 20px 48px rgba(224, 90, 71, 0.25);
}

/* WARM BONE PAPER & TERRACOTTA (LIGHT MODE) */
:root[data-theme="light"] {
  --bg-canvas: #F7F4EF;
  --bg-surface: #FFFFFF;
  --bg-surface-hover: #EFECE6;
  --bg-card: #FFFFFF;
  --bg-subcard: #F2EFE9;

  --border-subtle: #E2DDD5;
  --border-medium: rgba(217, 74, 56, 0.4);
  --border-focus: #D94A38;

  --accent-brand: #D94A38;
  --accent-brand-glow: rgba(217, 74, 56, 0.18);
  --accent-cobalt: #2563EB;
  --accent-sage: #16A34A;
  --accent-amber: #D97706;

  --text-primary: #1A1917;
  --text-secondary: #4A4742;
  --text-tertiary: #78746D;

  --shadow-subtle: 0 12px 30px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 20px 40px rgba(217, 74, 56, 0.18);
}

/* RESET & BASE */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
}

p, .hero-sub, .section-subtitle, .project-desc {
  max-width: 640px;
  line-height: 1.6;
}

.hero-headline, .section-title {
  max-width: 780px;
}

/* ==========================================================================
   1. FLOATING HEADER
   ========================================================================== */
.floating-header-nav {
  position: fixed;
  top: 24px; left: 36px; right: 36px;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}

.brand-stamp {
  pointer-events: auto;
  display: flex; align-items: center; gap: 12px;
  text-decoration: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 16px 6px 8px;
  border-radius: 30px;
  box-shadow: var(--shadow-subtle);
  transition: all 0.25s ease;
}

.brand-stamp:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.brand-stamp-icon {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-brand), #B83A29);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-weight: 700; font-size: 14px;
  letter-spacing: -0.02em;
  display: flex; align-items: center; justify-content: center;
}

.brand-stamp-text {
  font-family: var(--font-heading);
  font-weight: 700; font-size: 14.5px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.ticket-nav-container {
  pointer-events: auto;
  display: flex; gap: 10px;
  background: rgba(21, 24, 33, 0.75);
  backdrop-filter: blur(16px);
  padding: 6px 10px;
  border-radius: 30px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

:root[data-theme="light"] .ticket-nav-container {
  background: rgba(255, 255, 255, 0.85);
}

.ticket-nav-link {
  color: var(--text-secondary);
  font-size: 12.5px; font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 20px;
  transition: all 0.2s ease;
}

.ticket-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.ticket-nav-link.active {
  background: var(--accent-brand);
  color: #FFFFFF;
  box-shadow: 0 4px 14px var(--accent-brand-glow);
}

.arcade-hud-controls {
  pointer-events: auto;
  display: flex; align-items: center; gap: 8px;
}

/* ==========================================================================
   2. ZIPPER CURTAIN OVERLAY (FIRST VISIT ONLY)
   ========================================================================== */
#zipper-curtain-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 9999;
  display: flex;
  overflow: hidden;
  background: transparent;
  pointer-events: auto;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#zipper-curtain-overlay.hidden {
  display: none !important;
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

.curtain-panel {
  width: 50vw; height: 100vh;
  background: #141720;
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(224, 90, 71, 0.15), transparent 70%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 2px, transparent 2px, transparent 8px);
  position: relative;
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
  box-shadow: inset 0 0 100px rgba(0,0,0,0.8);
}

:root[data-theme="light"] .curtain-panel {
  background: #2C2A26;
}

#curtain-left {
  border-right: 3px solid #E05A47;
  transform-origin: top left;
}

#curtain-right {
  border-left: 3px solid #E05A47;
  transform-origin: top right;
}

.curtain-fall-left {
  animation: fallLeft 0.35s cubic-bezier(0.7, 0, 0.3, 1) forwards;
}

.curtain-fall-right {
  animation: fallRight 0.35s cubic-bezier(0.7, 0, 0.3, 1) forwards;
}

@keyframes fallLeft {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  50% { transform: translate(-30vw, 10vh) rotate(-12deg); opacity: 0.9; }
  100% { transform: translate(-100vw, 100vh) rotate(-45deg); opacity: 0; }
}

@keyframes fallRight {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  50% { transform: translate(30vw, 10vh) rotate(12deg); opacity: 0.9; }
  100% { transform: translate(100vw, 100vh) rotate(45deg); opacity: 0; }
}

.zipper-seam-container {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 40px;
  z-index: 10000;
  pointer-events: none;
}

.zipper-teeth-track {
  width: 100%; height: 100%;
  background-image: repeating-linear-gradient(to bottom, #E05A47 0px, #E05A47 6px, transparent 6px, transparent 12px);
  opacity: 0.6;
}

.zipper-handle-wrapper {
  position: absolute;
  top: 40px; left: 50%;
  transform: translateX(-50%);
  z-index: 10001;
  cursor: grab;
  user-select: none;
  touch-action: none;
  display: flex; flex-direction: column; align-items: center;
  pointer-events: auto;
  transition: transform 0.1s ease-out, opacity 0.3s ease;
}

.zipper-handle-wrapper:active { cursor: grabbing; }

.zipper-pull-head {
  width: 32px; height: 24px;
  background: linear-gradient(135deg, #FF7A66, #E05A47);
  border-radius: 6px 6px 2px 2px;
  box-shadow: 0 4px 15px rgba(224, 90, 71, 0.6);
  border: 1px solid #FFFFFF;
}

.zipper-pull-tab {
  width: 22px; height: 48px;
  background: linear-gradient(to bottom, #E05A47, #A83626);
  border-radius: 4px 4px 12px 12px;
  margin-top: -2px;
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
  display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: 6px;
}

.zipper-pull-hole {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(0,0,0,0.6);
}

.zipper-hint-label {
  margin-top: 14px;
  background: rgba(0,0,0,0.85);
  border: 1px solid #E05A47;
  color: #F7F5F0;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.03em;
  box-shadow: 0 4px 20px rgba(224, 90, 71, 0.4);
  animation: pulseHint 1.8s infinite alternate;
}

@keyframes pulseHint {
  0% { transform: translateY(0); box-shadow: 0 4px 14px rgba(224, 90, 71, 0.3); }
  100% { transform: translateY(6px); box-shadow: 0 8px 25px rgba(224, 90, 71, 0.7); }
}

/* ==========================================================================
   3. SCROLLBAR WOOLLEN YARN TRACK & INTERACTIVE DRAGGABLE YARN BALL
   ========================================================================== */
#woollen-yarn-scrollbar-container {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 540;
  pointer-events: none;
}

#woollen-yarn-scrollbar-ball {
  position: fixed;
  top: 100px; right: 18px;
  width: 42px; height: 42px;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
  touch-action: none;
  z-index: 545;
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), filter 0.2s ease;
  filter: drop-shadow(0 4px 12px var(--accent-brand-glow));
}

#woollen-yarn-scrollbar-ball:hover {
  cursor: grab;
  transform: scale(1.15) rotate(15deg);
  filter: drop-shadow(0 6px 18px var(--accent-brand-glow));
}

#woollen-yarn-scrollbar-ball:active,
#woollen-yarn-scrollbar-ball.dragging {
  cursor: grabbing !important;
  transform: scale(1.25) rotate(-20deg);
}

#unraveling-yarn-svg {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
}

/* Cat speech bubble styling */
.cat-speech-bubble {
  background: var(--bg-card);
  border: 1px solid var(--accent-brand);
  color: var(--accent-brand);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(6px) scale(0.9);
  transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  pointer-events: none;
  white-space: nowrap;
}

.cat-speech-bubble.active {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   4. SUBTLE SMALL HAND-DRAWN LINE-ART CAT & DYNAMIC YARN-TRACKING RISE
   ========================================================================== */
#peeking-character-runner {
  position: fixed;
  bottom: 0px;
  right: 52px;
  width: 105px; height: 95px;
  z-index: 550;
  pointer-events: auto;
  cursor: pointer;
  filter: drop-shadow(0 -3px 10px rgba(0, 0, 0, 0.3));
  overflow: visible !important;
}

#peeking-character-runner svg {
  overflow: visible !important;
  width: 100%; height: 100%;
}

.hand-drawn-stroke {
  stroke: var(--text-primary);
  stroke-width: 2.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: var(--bg-surface);
  transition: stroke 0.3s ease, fill 0.3s ease;
}

.hand-drawn-accent {
  stroke: var(--accent-brand);
  stroke-width: 2.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.yarn-thread-path {
  stroke: var(--accent-brand);
  stroke-width: 2.2;
  stroke-linecap: round;
  fill: none;
}

#hand-drawn-head-group {
  transition: transform 0.12s ease-out;
  transform-origin: 80px 80px;
}

#hand-drawn-raised-paw {
  transition: transform 0.12s ease-out;
  transform-origin: 120px 80px;
}

/* ==========================================================================
   5. BUTTONS & CARDS
   ========================================================================== */
.btn-minimal-primary {
  background: linear-gradient(135deg, var(--accent-brand), #A83626);
  color: #FFFFFF;
  font-family: var(--font-body);
  font-weight: 600; font-size: 13px;
  letter-spacing: -0.01em;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  box-shadow: 0 4px 16px var(--accent-brand-glow);
  transition: all 0.2s ease;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none;
}

.btn-minimal-primary:hover {
  opacity: 0.95;
  box-shadow: 0 6px 24px var(--accent-brand-glow);
  border-color: var(--accent-brand);
}

.btn-minimal-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 600; font-size: 13px;
  letter-spacing: -0.01em;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none;
}

.btn-minimal-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
  box-shadow: 0 4px 20px var(--accent-brand-glow);
}

.page-container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  position: relative;
  z-index: 1;
}

section[id] { scroll-margin-top: 110px; }

.hero-editorial {
  text-align: center;
  padding: 60px 24px 70px;
  margin: 0 auto;
  display: flex; flex-direction: column; align-items: center;
}

.hero-pill-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-brand-glow);
  border: 1px solid var(--border-medium);
  color: var(--accent-brand);
  font-family: var(--font-mono); font-size: 11px;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: 52px; font-weight: 700;
  letter-spacing: -0.03em; /* Crisp, tight, slim letter proportions */
  line-height: 1.12;
  color: var(--text-primary);
  margin-bottom: 24px;
  text-align: center;
}

.hero-gradient-text {
  background: linear-gradient(135deg, var(--accent-brand), var(--accent-cobalt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 17.5px;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 36px;
}

.section-header-block {
  text-align: center;
  margin: 0 auto 48px;
  display: flex; flex-direction: column; align-items: center;
}

.section-tag {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent-brand);
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: 8px; display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 34px; font-weight: 700;
  letter-spacing: -0.025em; /* Slim tight proportions */
  color: var(--text-primary);
  margin-bottom: 12px;
  text-align: center;
}

.section-subtitle {
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  text-align: center;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 60px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(16px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-hover);
}

.project-tag {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent-brand); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: block;
}

.project-title {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.project-desc {
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
}

.project-highlights-list {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 28px;
}

.project-chip {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  padding: 6px 12px; border-radius: 6px;
  letter-spacing: 0.02em;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(16px);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.subcard-pane {
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all 0.25s ease;
}

.subcard-pane:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
  box-shadow: 0 6px 20px var(--accent-brand-glow);
}

.footer-glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-top: 60px;
  backdrop-filter: blur(16px);
  transition: all 0.25s ease;
}

.footer-glass-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-hover);
}

.footer-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.footer-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-brand);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-domain {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
}

.footer-body-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 20px;
}

.footer-disclaimer-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

.footer-contact-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
}

.footer-contact-title {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-brand);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-contact-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-link {
  font-size: 12.5px;
  color: var(--text-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--accent-brand);
}

.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

@media (max-width: 768px) {
  .page-container {
    padding: 100px 16px 60px;
  }
  .floating-header-nav {
    left: 12px; right: 12px; top: 12px;
    padding: 10px 14px;
    gap: 8px;
  }
  .ticket-nav-container { display: none; }
  .brand-stamp-text { font-size: 13px; }
  .arcade-hud-controls { gap: 6px; }
  .arcade-hud-controls .btn-minimal-primary { padding: 8px 14px; font-size: 12px; }
  .arcade-hud-controls .btn-minimal-secondary { padding: 8px 12px; font-size: 12px; }
  #theme-label { display: none; }

  .hero-editorial { padding: 30px 12px 40px; }
  .hero-pill-badge { font-size: 10px; padding: 5px 12px; margin-bottom: 16px; }
  .hero-headline { font-size: 32px; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 16px; }
  .hero-sub { font-size: 15px; margin-bottom: 24px; }
  .hero-editorial div[style*="flex"] { flex-direction: column; width: 100%; gap: 10px; }
  .hero-editorial .btn-minimal-primary,
  .hero-editorial .btn-minimal-secondary { width: 100%; justify-content: center; }

  .section-title { font-size: 26px; }
  .section-subtitle { font-size: 14px; }

  .project-grid, .about-grid, .footer-body-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .project-card { padding: 24px 20px; }
  .about-card { padding: 24px 20px; }

  .footer-glass-card { padding: 24px 18px; margin-top: 40px; }
  .footer-header-row { flex-direction: column; align-items: flex-start; gap: 6px; }
  .footer-bottom-row { flex-direction: column; align-items: flex-start; gap: 8px; font-size: 11px; }

  #peeking-character-runner { right: 12px; bottom: 0; width: 85px; height: 75px; }
  #woollen-yarn-scrollbar-ball { right: 10px; width: 36px; height: 36px; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 28px; }
  .project-card { padding: 20px 16px; }
  .project-title { font-size: 19px; }
}