/* CSS Design System - Shahabuddin Khan Professional Portfolio (Animated Edition) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

:root {
  --color-dark: #0D0D0D;
  --color-background: #FAFAF8;
  --color-card-bg: #FFFFFF;
  --color-surface-low: #F4F4F2;
  --color-surface-container: #EEEEEC;
  --color-surface-high: #E8E8E6;
  --color-gold: #C9A24B;
  --color-gold-hover: #B08D3F;
  --color-gold-light: #FDD275;
  --color-text-primary: #1A1C1B;
  --color-text-muted: #444748;
  --color-text-tertiary: #848483;
  --color-border: #E2E3E1;
  --color-border-hover: #C9A24B;
  --color-cream-bg: #FDF8F0;
  
  --font-display: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  --max-width: 1280px;
  --gutter: 24px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
}

body {
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.5s ease;
  overflow-x: hidden;
}

/* Scroll Progress Bar at Top */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #C9A24B 0%, #FDD275 50%, #C9A24B 100%);
  width: 0%;
  z-index: 9999;
  box-shadow: 0 0 10px rgba(201, 162, 75, 0.7);
  transition: width 0.1s ease-out;
}

/* Typography Utility Classes */
.font-display { font-family: var(--font-display); }
.font-body { font-family: var(--font-body); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: inherit;
}

/* Color & Theme Utilities */
.text-gold { color: var(--color-gold) !important; }
.bg-gold { background-color: var(--color-gold) !important; }
.bg-dark { background-color: var(--color-dark) !important; }
.text-dark { color: var(--color-dark) !important; }
.border-gold { border-color: var(--color-gold) !important; }

/* Layout Utilities */
.container-max {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  display: block;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(250, 250, 248, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.4s ease, border-color 0.4s ease, transform 0.3s ease;
}

.navbar.nav-dark {
  background-color: rgba(13, 13, 13, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.navbar.nav-dark .nav-brand { color: #FFFFFF; }
.navbar.nav-dark .nav-link { color: #A0A0A0; }
.navbar.nav-dark .nav-link:hover { color: var(--color-gold); }

.nav-link {
  position: relative;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--color-gold);
  transition: width 0.3s ease;
}

.nav-link:hover { color: var(--color-gold); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* Glowing Live Status Dot */
.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 16px;
  height: 16px;
  background-color: rgba(16, 185, 129, 0.4);
  border-radius: 50%;
  animation: pulseRing 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes pulseRing {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* Buttons & Shimmers */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn-primary-gold {
  background-color: var(--color-gold);
  color: #0D0D0D;
  box-shadow: 0 4px 15px rgba(201, 162, 75, 0.2);
}

.btn-primary-gold:hover {
  background-color: var(--color-gold-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 30px rgba(201, 162, 75, 0.4);
}

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

.btn-outline-gold:hover {
  background-color: var(--color-gold);
  color: #0D0D0D;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(201, 162, 75, 0.3);
}

.btn-dark {
  background-color: #0D0D0D;
  color: #FFFFFF;
}

.btn-dark:hover {
  background-color: #262626;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.btn-shimmer::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 45%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 55%
  );
  transform: rotate(-45deg);
  transition: all 0.6s;
  pointer-events: none;
}

.btn-shimmer:hover::after {
  left: 100%;
}

/* Animations & Staggered Reveals */
.reveal {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.reveal-left {
  transform: translateX(-40px);
}

.reveal.reveal-right {
  transform: translateX(40px);
}

.reveal.reveal-scale {
  transform: scale(0.92);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Ambient Floating Keyframes */
@keyframes floatAnim {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: floatAnim 5s ease-in-out infinite;
}

/* Cards & Spotlight Effect */
.card-service {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.card-service::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card-service:hover {
  border-color: var(--color-gold);
  transform: translateY(-8px);
  box-shadow: 0 20px 45px rgba(201, 162, 75, 0.12);
}

.card-service:hover::before {
  transform: scaleX(1);
}

.card-case-study {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.card-case-study:hover {
  border-color: var(--color-gold);
  transform: translateX(8px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
}

/* Hero Section Specifics */
.hero-section {
  background-color: #0D0D0D;
  color: #FFFFFF;
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 110px;
  padding-bottom: 90px;
}

/* Ambient Radial Glow behind Hero */
.hero-glow-bg {
  position: absolute;
  top: 20%;
  right: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.15) 0%, rgba(13, 13, 13, 0) 70%);
  pointer-events: none;
  filter: blur(50px);
  animation: glowPulse 8s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  0% { opacity: 0.5; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1.1); }
}

.hero-portrait-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.8), 0 0 40px rgba(201, 162, 75, 0.15);
  border: 1px solid rgba(201, 162, 75, 0.35);
  transition: transform 0.5s ease-out, box-shadow 0.5s ease-out;
}

.hero-portrait-frame:hover {
  transform: scale(1.02);
  box-shadow: 0 35px 70px -10px rgba(0, 0, 0, 0.9), 0 0 50px rgba(201, 162, 75, 0.3);
}

.hero-portrait-frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Badge Styles */
.badge-gold {
  background-color: rgba(201, 162, 75, 0.15);
  color: var(--color-gold);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  border: 1px solid rgba(201, 162, 75, 0.3);
}

/* Form Controls */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background-color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-primary);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 75, 0.18);
  transform: translateY(-1px);
}

/* Mobile Menu Drawer */
.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: var(--color-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transform: translateY(-150%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 99;
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu .nav-link {
  color: #FFFFFF;
  font-size: 14px;
}

@media (max-width: 768px) {
  .hero-section {
    padding-top: 100px;
    padding-bottom: 60px;
  }
}