/* ==========================================================================
   MATERIAL DESIGN 3 (MATERIAL YOU) DESIGN SYSTEM - ROYAL BLUE & SUNSET GOLD
   Author: Mark Lawrence M. Quibot Portfolio
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Roboto:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');

:root {
  /* Dynamic M3 Light Palette (Royal Blue Primary, Sunset Gold Accent) */
  --md-sys-color-primary: #1646FA;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #DAE1FF;
  --md-sys-color-on-primary-container: #001452;

  --md-sys-color-secondary: #585E71;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #DDE1F9;
  --md-sys-color-on-secondary-container: #151B2C;

  --md-sys-color-tertiary: #FFB703; /* Sunset Gold Accent */
  --md-sys-color-on-tertiary: #1A1400;
  --md-sys-color-tertiary-container: #FFF0C7;
  --md-sys-color-on-tertiary-container: #4A3800;

  --md-sys-color-error: #BA1A1A;
  --md-sys-color-error-container: #FFDAD6;
  --md-sys-color-on-error: #FFFFFF;

  --md-sys-color-background: #F9F9FF;
  --md-sys-color-on-background: #1A1B20;
  --md-sys-color-surface: #F9F9FF;
  --md-sys-color-on-surface: #1A1B20;
  --md-sys-color-surface-variant: #E0E1EC;
  --md-sys-color-on-surface-variant: #44464F;
  --md-sys-color-outline: #74777F;
  --md-sys-color-outline-variant: #C4C6D0;

  /* Surface Container Tones (Blue-tinted M3 elevation system) */
  --md-sys-color-surface-container-lowest: #FFFFFF;
  --md-sys-color-surface-container-low: #F2F3FD;
  --md-sys-color-surface-container: #ECEDFA;
  --md-sys-color-surface-container-high: #E6E7F4;
  --md-sys-color-surface-container-highest: #E0E1EE;

  /* Shapes & Radius */
  --md-corner-full: 9999px;
  --md-corner-extra-large: 28px;
  --md-corner-large: 16px;
  --md-corner-medium: 12px;
  --md-corner-small: 8px;

  /* Typography */
  --md-font-brand: 'Plus Jakarta Sans', sans-serif;
  --md-font-plain: 'Roboto', sans-serif;

  /* Elevation Shadows */
  --md-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.04);
  --md-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.05);
  --md-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.1), 0px 1px 3px 0px rgba(0, 0, 0, 0.06);
  --md-elevation-4: 0px 6px 10px 4px rgba(0, 0, 0, 0.12), 0px 2px 4px 0px rgba(0, 0, 0, 0.08);

  /* Animation & Motion */
  --md-motion-easing-emphasized: cubic-bezier(0.2, 0.0, 0.0, 1.0);
  --md-motion-duration-medium: 300ms;
}

/* Dark Mode Tokens (Material You Dark Mint Scheme) */
[data-theme="dark"] {
  --md-sys-color-primary: #B1C5FF;
  --md-sys-color-on-primary: #002C83;
  --md-sys-color-primary-container: #003BA8;
  --md-sys-color-on-primary-container: #DAE1FF;

  --md-sys-color-secondary: #C1C5DD;
  --md-sys-color-on-secondary: #2B3042;
  --md-sys-color-secondary-container: #414659;
  --md-sys-color-on-secondary-container: #DDE1F9;

  --md-sys-color-tertiary: #FFCA4B;
  --md-sys-color-on-tertiary: #3D2E00;
  --md-sys-color-tertiary-container: #5C4200;
  --md-sys-color-on-tertiary-container: #FFF0C7;

  --md-sys-color-background: #0E1117;
  --md-sys-color-on-background: #E2E2EA;
  --md-sys-color-surface: #0E1117;
  --md-sys-color-on-surface: #E2E2EA;
  --md-sys-color-surface-variant: #44464F;
  --md-sys-color-on-surface-variant: #C4C6D0;
  --md-sys-color-outline: #8E909A;
  --md-sys-color-outline-variant: #44464F;

  --md-sys-color-surface-container-lowest: #080A10;
  --md-sys-color-surface-container-low: #141721;
  --md-sys-color-surface-container: #181B26;
  --md-sys-color-surface-container-high: #222530;
  --md-sys-color-surface-container-highest: #2D303B;

  --md-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.4), 0px 1px 2px 0px rgba(0, 0, 0, 0.2);
  --md-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.45), 0px 1px 2px 0px rgba(0, 0, 0, 0.25);
  --md-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.5), 0px 1px 3px 0px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--md-font-plain);
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized),
              color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

/* Material Symbols Utility */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
}

/* Typography Tokens */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--md-font-brand);
  color: var(--md-sys-color-on-surface);
  font-weight: 700;
  line-height: 1.25;
}

.display-large { font-size: 3.2rem; font-weight: 800; letter-spacing: -0.02em; }
.headline-large { font-size: 2.2rem; font-weight: 700; }
.headline-medium { font-size: 1.75rem; font-weight: 600; }
.title-large { font-size: 1.35rem; font-weight: 600; }
.title-medium { font-size: 1.1rem; font-weight: 600; }
.body-large { font-size: 1.1rem; font-weight: 400; color: var(--md-sys-color-on-surface-variant); }
.body-medium { font-size: 0.95rem; font-weight: 400; color: var(--md-sys-color-on-surface-variant); }
.label-large { font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

/* Container & Layout */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
  position: relative;
}

/* ==========================================================================
   MATERIAL RIPPLE EFFECT & BUTTONS
   ========================================================================== */

.md-ripple {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background-color: currentColor;
  opacity: 0.25;
  transform: scale(0);
  animation: ripple-animation 600ms linear;
  pointer-events: none;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* M3 Filled Button */
.btn-filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  font-family: var(--md-font-brand);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--md-corner-full);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  box-shadow: var(--md-elevation-1);
  transition: all var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.btn-filled:hover {
  box-shadow: var(--md-elevation-2);
  transform: translateY(-2px);
}

/* M3 Tonal / Secondary Container Button */
.btn-tonal {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-family: var(--md-font-brand);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--md-corner-full);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  transition: all var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.btn-tonal:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  transform: translateY(-2px);
}

/* M3 Outlined Button */
.btn-outlined {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  font-family: var(--md-font-brand);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 11px 23px;
  border-radius: var(--md-corner-full);
  border: 1.5px solid var(--md-sys-color-outline);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  transition: all var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.btn-outlined:hover {
  background-color: var(--md-sys-color-primary-container);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary-container);
}

/* M3 Floating Action Button (FAB Accent) */
.fab-accent {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  box-shadow: var(--md-elevation-3);
  padding: 14px 24px;
  border-radius: var(--md-corner-large);
  font-family: var(--md-font-brand);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.fab-accent:hover {
  transform: scale(1.04);
  box-shadow: var(--md-elevation-4);
}

/* ==========================================================================
   NAVIGATION BAR & DOCK
   ========================================================================== */

.app-navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: min(94%, 1100px);
  z-index: 1000;
  background-color: rgba(249, 249, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--md-corner-full);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-2);
  transition: all var(--md-motion-duration-medium) ease;
}

[data-theme="dark"] .app-navbar {
  background-color: rgba(14, 17, 23, 0.88);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--md-sys-color-primary), var(--md-sys-color-tertiary));
  color: var(--md-sys-color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--md-font-brand);
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-title {
  font-family: var(--md-font-brand);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--md-sys-color-on-surface);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-font-brand);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 8px 16px;
  border-radius: var(--md-corner-full);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle-btn {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
}

.theme-toggle-btn:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding-top: 140px;
  padding-bottom: 70px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 40px;
  align-items: center;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 6px 16px;
  border-radius: var(--md-corner-full);
  font-family: var(--md-font-brand);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-title span.highlight {
  color: var(--md-sys-color-primary);
  background: linear-gradient(120deg, var(--md-sys-color-primary), var(--md-sys-color-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 28px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 32px;
}

.contact-quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 6px 14px;
  border-radius: var(--md-corner-full);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.chip-item:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-color: var(--md-sys-color-primary);
}

/* Material You Profile Card */
.hero-card {
  background-color: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-corner-extra-large);
  padding: 32px;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-3);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--md-sys-color-primary-container) 0%, transparent 70%);
  opacity: 0.7;
}

.profile-avatar-wrapper {
  width: 100px;
  height: 100px;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--md-sys-color-primary), #001452);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-on-primary);
  font-size: 2.8rem;
  font-family: var(--md-font-brand);
  font-weight: 800;
  margin-bottom: 20px;
  box-shadow: var(--md-elevation-2);
}

.profile-name {
  font-size: 1.45rem;
  margin-bottom: 4px;
}

.profile-role {
  color: var(--md-sys-color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.stat-box {
  background-color: var(--md-sys-color-surface-container-lowest);
  padding: 14px;
  border-radius: var(--md-corner-large);
  text-align: center;
  border: 1px solid var(--md-sys-color-outline-variant);
}

.stat-number {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--md-sys-color-primary);
  font-family: var(--md-font-brand);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  text-transform: uppercase;
  font-weight: 600;
}

/* ==========================================================================
   HONORS, AWARDS & HACKATHONS
   ========================================================================== */

.awards-section {
  background-color: var(--md-sys-color-surface-container-low);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  color: var(--md-sys-color-tertiary);
  font-family: var(--md-font-brand);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.award-card {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-corner-extra-large);
  padding: 28px;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-1);
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.award-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--md-elevation-3);
  border-color: var(--md-sys-color-primary);
}

.award-card.winner {
  border-left: 6px solid var(--md-sys-color-tertiary);
}

.award-card.runner-up {
  border-left: 6px solid var(--md-sys-color-primary);
}

.award-badge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.award-trophy-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.award-year {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--md-corner-full);
}

.award-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.award-subtitle {
  color: var(--md-sys-color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.award-desc {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
}

/* ==========================================================================
   CURATED EXPERIENCE (TIMELINE STEPPER)
   ========================================================================== */

.timeline-stepper {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline-stepper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 28px;
  width: 3px;
  background: linear-gradient(to bottom, var(--md-sys-color-primary), var(--md-sys-color-outline-variant));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-left: 74px;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px var(--md-sys-color-background);
  z-index: 2;
}

.timeline-item.current .timeline-dot {
  background-color: var(--md-sys-color-tertiary);
  color: var(--md-sys-color-on-tertiary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(255, 183, 3, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(255, 183, 3, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 183, 3, 0); }
}

.timeline-card {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-corner-extra-large);
  padding: 28px;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-1);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}

.role-title {
  font-size: 1.2rem;
  color: var(--md-sys-color-on-surface);
}

.company-name {
  color: var(--md-sys-color-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.timeline-date {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 4px 14px;
  border-radius: var(--md-corner-full);
  font-size: 0.8rem;
  font-weight: 700;
}

.timeline-bullets {
  list-style: none;
}

.timeline-bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface-variant);
}

.timeline-bullets li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--md-sys-color-primary);
  font-weight: bold;
  font-size: 1.2rem;
  line-height: 1;
}

/* ==========================================================================
   FEATURED PROJECTS (FILTER & CARDS)
   ========================================================================== */

.filter-chips-wrapper {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-chip {
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 8px 20px;
  border-radius: var(--md-corner-full);
  font-family: var(--md-font-brand);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-chip:hover, .filter-chip.active {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border-color: var(--md-sys-color-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-corner-extra-large);
  overflow: hidden;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--md-elevation-3);
}

.project-media {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-media img {
  transform: scale(1.05);
}

.project-award-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--md-corner-full);
  box-shadow: var(--md-elevation-2);
}

.project-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tech-tag {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--md-corner-small);
}

.project-desc {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 20px;
  flex-grow: 1;
}

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

/* ==========================================================================
   PHOTOGRAPHY SHOWCASE
   ========================================================================== */

.photo-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.photo-item {
  position: relative;
  border-radius: var(--md-corner-extra-large);
  overflow: hidden;
  height: 280px;
  cursor: pointer;
  box-shadow: var(--md-elevation-1);
}

.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  color: #fff;
  opacity: 0.9;
  transition: opacity 0.3s ease;
}

.photo-item:hover img {
  transform: scale(1.08);
}

.photo-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.photo-meta {
  font-size: 0.85rem;
  opacity: 0.85;
}

/* ==========================================================================
   TECHNICAL SKILLS MATRIX
   ========================================================================== */

.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.skill-category-card {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-corner-extra-large);
  padding: 28px;
  border: 1px solid var(--md-sys-color-outline-variant);
}

.category-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  margin-bottom: 18px;
  color: var(--md-sys-color-primary);
}

.skill-chips-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-pill {
  background-color: var(--md-sys-color-surface-container-lowest);
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 6px 14px;
  border-radius: var(--md-corner-full);
  font-size: 0.85rem;
  font-weight: 600;
}

/* ==========================================================================
   FREE HOSTING GUIDE & MODAL DIALOGS
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  max-width: 650px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--md-corner-extra-large);
  padding: 32px;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-elevation-4);
  transform: scale(0.9);
  transition: transform 0.3s var(--md-motion-easing-emphasized);
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  font-size: 1.5rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-modal-btn:hover {
  background-color: var(--md-sys-color-surface-container-highest);
}

.hosting-step-box {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-corner-large);
  padding: 16px;
  margin-bottom: 14px;
  border-left: 4px solid var(--md-sys-color-primary);
}

.code-snippet {
  background-color: #111528;
  color: #B1C5FF;
  font-family: monospace;
  padding: 10px 14px;
  border-radius: var(--md-corner-small);
  font-size: 0.85rem;
  margin-top: 8px;
  overflow-x: auto;
}

/* Footer */
.app-footer {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding: 40px 0;
  text-align: center;
}

.footer-brand {
  font-family: var(--md-font-brand);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--md-sys-color-primary);
  margin-bottom: 8px;
}

/* Toast / Snackbar */
.snackbar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--md-sys-color-on-surface);
  color: var(--md-sys-color-surface);
  padding: 14px 24px;
  border-radius: var(--md-corner-full);
  font-weight: 600;
  box-shadow: var(--md-elevation-3);
  z-index: 3000;
  transition: transform 0.3s ease;
}

.snackbar.show {
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   3D SIMULTANEOUS CARD FLIP - PROJECTS SECTION
   ========================================================================== */

.projects-grid {
  perspective: 1200px;
}

.project-card {
  perspective: 1000px;
}

.card-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
  transform-style: preserve-3d;
}

.projects-grid.all-flipped .card-flip-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.card-front {
  position: relative;
}

.card-back {
  position: absolute;
  inset: 0;
  transform: rotateY(180deg);
  background: linear-gradient(145deg, var(--md-sys-color-primary-container), var(--md-sys-color-surface-container-high));
  border-radius: var(--md-corner-extra-large);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  overflow: hidden;
}

.card-back::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--md-sys-color-tertiary-container) 0%, transparent 70%);
  opacity: 0.6;
}

.card-back::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--md-sys-color-primary-container) 0%, transparent 70%);
  opacity: 0.5;
}

.card-back-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--md-sys-color-primary), var(--md-sys-color-tertiary));
  color: var(--md-sys-color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 16px;
  box-shadow: var(--md-elevation-2);
  z-index: 1;
}

.card-back-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--md-sys-color-on-primary-container);
  margin-bottom: 8px;
  z-index: 1;
}

.card-back-subtitle {
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 20px;
  max-width: 260px;
  z-index: 1;
}

.card-back-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  z-index: 1;
}

.card-back-tag {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--md-corner-full);
}

[data-theme="dark"] .card-back {
  background: linear-gradient(145deg, var(--md-sys-color-primary-container), var(--md-sys-color-surface-container));
}

[data-theme="dark"] .card-back-title {
  color: var(--md-sys-color-on-primary-container);
}

/* Flip hint indicator */
.flip-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--md-sys-color-primary);
  font-family: var(--md-font-brand);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  opacity: 0.8;
  animation: hint-pulse 2s ease-in-out infinite;
}

@keyframes hint-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Styles */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .display-large {
    font-size: 2.3rem;
  }

  .timeline-stepper::before {
    left: 18px;
  }

  .timeline-item {
    padding-left: 54px;
  }

  .timeline-dot {
    left: 2px;
    width: 30px;
    height: 30px;
  }
}