/* ==========================================================================
   JAUME TUR — PORTFOLIO DESIGN SYSTEM & STYLESHEET
   Creative Direction: Simple, Clean, Minimalist & High-Performance
   Aesthetic: Warm Bone White Canvas (#faf8f5) with Vibrant Liquid Waves & Lines
   ========================================================================== */

/* ==========================================================================
   1. DESIGN TOKENS (CSS Custom Properties)
   ========================================================================== */
:root {
  /* Color Palette — Clean Bone White (#faf8f5) */
  --bg: #faf8f5;
  --bg-trans: rgba(250, 248, 245, 0.88);
  --bg-strong: #f3efe8;
  --panel: #ffffff;
  --panel-hover: #ffffff;
  --panel-header: rgba(0, 0, 0, 0.02);
  --border: rgba(30, 41, 59, 0.08);
  --border-strong: rgba(30, 41, 59, 0.16);
  --border-focus: #0066ff;

  --text: #121826;
  --text-muted: #374151;
  --text-soft: #4b5563;
  --text-dim: #6b7280;

  /* Vivid Colors for Waves, Lines & Primary Accents */
  --accent: #0066ff;
  --accent-strong: #0052cc;
  --accent-deep: #003d99;
  --accent-soft: rgba(0, 102, 255, 0.08);
  --accent-glow: rgba(0, 102, 255, 0.28);
  --accent-gradient: linear-gradient(
    135deg,
    #0066ff 0%,
    #8a2be2 50%,
    #ff007f 100%
  );

  /* Vivid Palette Tokens */
  --vivid-cyan: #00f2fe;
  --vivid-blue: #0066ff;
  --vivid-pink: #ff007f;
  --vivid-purple: #8a2be2;
  --vivid-coral: #ff4e50;
  --vivid-amber: #f59e0b;
  --vivid-emerald: #05df72;

  --shadow-sm: 0 2px 10px rgba(18, 24, 38, 0.04);
  --shadow-md: 0 8px 28px rgba(18, 24, 38, 0.06);
  --shadow-lg: 0 16px 44px rgba(18, 24, 38, 0.08);
  --shadow-glow: 0 0 28px rgba(0, 102, 255, 0.24);

  /* Typography */
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --font-mono:
    "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;

  /* Spacing & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  /* Transition Speeds */
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s ease;
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   2. GLOBAL RESET & BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

html.is-interactive {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image: none;
  color: var(--text);
  font-weight: 500;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal);
}

body.nav-open {
  overflow: hidden;
}

/* Accessible Skip Link */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--accent-strong);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 1000;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
}

/* Layout Container */
.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ==========================================================================
   3. HEADER & NAVIGATION
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--bg-trans);
  border-bottom: 1px solid var(--border);
  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  transition: transform var(--transition-fast);
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-strong);
  box-shadow: inset 0 0 12px var(--accent-soft);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

/* Desktop Navigation Links */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  transition: opacity var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--text);
  background: var(--accent-soft);
}

.nav-link.active {
  color: var(--accent-strong);
  background: var(--accent-soft);
  font-weight: 700;
}

.nav-link-cv {
  border: 1px solid var(--border-strong);
  color: var(--accent-strong);
  font-weight: 700;
}

.nav-link-cv:hover {
  background: var(--accent-strong);
  color: #ffffff;
}

/* Navigation Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Language Switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
}

.lang-btn {
  background: transparent;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  transition: opacity var(--transition-fast);
}

.lang-btn.active {
  background: var(--accent-strong);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.lang-divider {
  font-size: 0.65rem;
  color: var(--text-dim);
  opacity: 0.6;
}

/* Mobile Hamburger Menu */
.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.menu-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.menu-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 1px;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.menu-icon.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-icon.active span:nth-child(2) {
  opacity: 0;
}
.menu-icon.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Drawer Base */
.mobile-drawer {
  display: none;
}

/* ==========================================================================
   4. COMMON CARD & UI STYLES
   ========================================================================== */
.tech-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
  transition: transform var(--transition-fast);
}

.tech-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff !important;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
}

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

.btn-outline:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* Section Headings */
.section {
  padding-top: 100px;
}

.section-header {
  margin-bottom: 36px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-tag::before {
  content: "<";
  opacity: 0.7;
  margin-right: 3px;
}

.section-tag::after {
  content: " />";
  opacity: 0.7;
  margin-left: 3px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--text);
  max-width: 800px;
}

.section-subtitle {
  margin-top: 10px;
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 650px;
}

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition: opacity 0.4s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero section is always immediately visible without waiting for scroll */
#hero,
.hero-section {
  opacity: 1 !important;
  transform: none !important;
}

/* ==========================================================================
   5. HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: 50px;
  padding-bottom: 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 36px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.hero-greeting {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-headline {
  font-size: clamp(2.2rem, 4.8vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: var(--text);
}

.hero-highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 8px;
}

/* Hero Telemetry Card */
.hero-panel {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.terminal-prompt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.terminal-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #047857;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
  animation: pulseDot 1.5s infinite;
}

.metrics-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.metric-box {
  padding: 16px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-topline {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.metric-topline strong {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent-strong);
}

.metric-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.metric-label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
}

.metric-meter {
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  overflow: hidden;
  margin-top: 4px;
}

.metric-meter-bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.panel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 4px;
}

.code-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--panel-hover);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ==========================================================================
   CV PROFILE CARD STYLES
   ========================================================================== */
.cv-data-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cv-data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.cv-data-row:hover {
  border-color: var(--border-strong);
  background: var(--panel-hover);
}

.cv-data-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-strong);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.cv-data-val {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  text-align: right;
  word-break: break-word;
}

@media (max-width: 480px) {
  .cv-data-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .cv-data-val {
    text-align: left;
  }
}

/* ==========================================================================
   6. ABOUT SECTION & ARCHITECTURE SPOTLIGHT
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  min-width: 0;
}

.about-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.about-lead {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.about-card p {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.architecture-box {
  margin-top: 12px;
  padding: 20px;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.arch-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.arch-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.arch-header h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.architecture-box p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.arch-diagram {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-strong);
  padding: 10px 14px;
  background: var(--panel);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  white-space: nowrap;
  max-width: 100%;
  min-width: 0;
}

.arch-node {
  font-weight: 700;
  background: var(--accent-soft);
  padding: 2px 6px;
  border-radius: 4px;
}

.arch-arrow {
  color: var(--text-dim);
}

/* 4 Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  min-width: 0;
}

.pillar-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  min-width: 0;
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-strong);
  opacity: 0.8;
}

.pillar-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.pillar-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   7. PROJECTS SECTION
   ========================================================================== */
.header-titles {
  margin-bottom: 20px;
}

.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.filter-btn {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
  transition: opacity var(--transition-fast);
}

.filter-btn:hover {
  background: var(--panel-hover);
  color: var(--text);
}

.filter-btn.active {
  background: var(--accent-strong);
  color: #ffffff;
  border-color: var(--accent-strong);
  box-shadow: var(--shadow-sm);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: all var(--transition-normal);
  transition: transform var(--transition-fast);
}

.project-card.hidden {
  display: none;
}

.project-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 24px 10px;
}

.project-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid var(--border);
}

.project-badge.status-live {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.3);
}

.project-year {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
}

/* Project Body */
.project-body {
  padding: 10px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.project-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.detail-row {
  display: flex;
  gap: 6px;
}

.detail-label {
  font-weight: 700;
  color: var(--accent-strong);
}

.detail-value {
  color: var(--text-muted);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  background: var(--panel-hover);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.project-links {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}

/* ==========================================================================
   8. SKILLS SECTION
   ========================================================================== */
.skill-tag-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.skill-tag-group {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill-tag-group h3 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 0;
}

.skill-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.skill-tag:hover {
  transform: translateY(-1px);
  border-color: rgba(96, 165, 250, 0.7);
  background: rgba(96, 165, 250, 0.08);
}

/* ==========================================================================
   9. PROCESS / METHODOLOGY SECTION
   ========================================================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.process-step-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-strong);
  opacity: 0.6;
  line-height: 1;
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   10. INSIGHTS / TELEMETRY BANNER
   ========================================================================== */
.insights-section {
  padding-top: 80px;
}

.insights-banner {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.insights-top {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.insight-code {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.insights-top h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.insight-item {
  padding: 18px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.insight-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ==========================================================================
   11. CONTACT SECTION
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
}

.contact-info-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card-title,
.form-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.channel-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.channel-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
}

.channel-value-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.channel-link {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast);
}

.channel-link:hover,
.channel-link:focus {
  color: var(--accent-strong);
}

.copy-btn {
  background: var(--panel-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  transition: opacity var(--transition-fast);
}

.copy-btn:hover {
  background: var(--accent-strong);
  color: #ffffff;
}

.copy-tooltip {
  position: absolute;
  bottom: 110%;
  right: 0;
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
}

.copy-tooltip.active {
  opacity: 1;
  transform: translateY(0);
}

/* Contact Form */
.contact-form-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text);
}

.form-input,
.form-textarea {
  font-family: var(--font-sans);
  font-size: 0.94rem;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: var(--panel-hover);
  color: var(--text);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-feedback {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0;
  border-radius: var(--radius-sm);
}

.form-feedback.error {
  color: #ef4444;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.form-feedback.success {
  color: #10b981;
  padding: 8px 12px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.btn-submit {
  align-self: flex-start;
  padding: 12px 24px;
}

/* ==========================================================================
   12. FOOTER & BACK TO TOP
   ========================================================================== */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  background: var(--bg-trans);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-soft);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-tech {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--accent-strong);
  color: #ffffff;
  border-color: var(--accent-strong);
}

/* ==========================================================================
   13. RESPONSIVE DESIGN (Desktop, Tablets & Mobile Phones)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .insights-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 992px) {
  .container {
    padding: 0 20px 72px;
  }

  .header-inner {
    padding: 12px 20px;
    flex-wrap: wrap;
    row-gap: 10px;
  }

  .nav-desktop {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 4px;
    flex-wrap: wrap;
  }

  .nav-link {
    padding: 6px 10px;
    font-size: 0.84rem;
  }

  .nav-controls {
    margin-left: auto;
  }

  .section {
    padding-top: 88px;
  }

  .section-header {
    margin-bottom: 30px;
  }

  .hero-section {
    padding-top: 40px;
    padding-bottom: 32px;
  }

  .hero-grid {
    gap: 28px;
  }

  .hero-panel {
    padding: 20px;
  }

  .hero-headline {
    font-size: clamp(2rem, 5vw, 3.1rem);
  }

  .about-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .insights-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 860px) {
  .nav-desktop {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
  .mobile-drawer {
    display: block;
    position: fixed;
    top: 58px;
    left: 0;
    right: 0;
    max-height: calc(100vh - 58px);
    overflow-y: auto;
    background: var(--bg-trans);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-strong);
    padding: 16px 20px 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition:
      transform var(--transition-normal),
      opacity var(--transition-normal);
    z-index: 99;
  }
  .mobile-drawer.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .mobile-nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 700;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    transition: opacity var(--transition-fast);
  }
  .mobile-nav-link:hover,
  .mobile-nav-link:focus,
  .mobile-nav-link:active {
    background: var(--accent-soft);
    border-color: var(--border);
    color: var(--accent-strong);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px 50px;
  }
  .hero-section {
    padding-top: 24px;
    padding-bottom: 24px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-content {
    gap: 16px;
  }
  .hero-headline {
    font-size: clamp(1.85rem, 6.5vw, 2.5rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
  }
  .hero-description {
    font-size: 0.98rem;
    line-height: 1.55;
  }
  .hero-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
    font-size: 0.94rem;
  }
  .hero-panel {
    padding: 18px 14px;
    gap: 16px;
  }
  .panel-header {
    padding-bottom: 10px;
  }
  .metrics-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .metric-box {
    padding: 12px 10px;
    gap: 4px;
  }
  .metric-topline strong {
    font-size: 1.45rem;
  }
  .metric-label {
    font-size: 0.72rem;
  }
  .panel-tags {
    gap: 4px;
  }
  .code-pill {
    font-size: 0.68rem;
    padding: 3px 8px;
  }

  /* About Section */
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
  .about-card {
    padding: 20px 16px;
    gap: 14px;
  }
  .about-lead {
    font-size: 1.1rem;
    line-height: 1.45;
  }
  .about-card p {
    font-size: 0.94rem;
    line-height: 1.6;
  }
  .architecture-box {
    padding: 14px 12px;
    gap: 10px;
  }
  .arch-diagram {
    padding: 8px 10px;
    font-size: 0.68rem;
    -webkit-overflow-scrolling: touch;
  }
  .pillars-grid {
    gap: 12px;
  }
  .pillar-card {
    padding: 16px 14px;
  }
  .pillar-card h4 {
    font-size: 0.98rem;
  }
  .pillar-card p {
    font-size: 0.86rem;
  }

  /* Projects Section */
  .filter-group {
    gap: 6px;
  }
  .filter-btn {
    padding: 6px 12px;
    font-size: 0.78rem;
    min-height: 36px;
  }
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .project-topline {
    padding: 12px 14px 8px;
  }

  .project-body {
    padding: 14px 14px 16px;
    gap: 10px;
  }
  .project-title {
    font-size: 1.08rem;
  }
  .project-desc {
    font-size: 0.88rem;
  }
  .project-details {
    padding: 7px 8px;
    font-size: 0.76rem;
  }
  .project-links {
    display: flex;
    flex-direction: row;
    gap: 8px;
  }
  .project-links .btn {
    flex: 1 1 0;
    padding: 10px 8px;
    font-size: 0.8rem;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
  }

  /* Skills Section */
  .skill-tag-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
  .skill-tag-group {
    padding: 18px 14px;
    gap: 12px;
  }
  .skill-tag-group h3 {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }
  .skill-tag-list {
    gap: 10px;
  }
  .skill-tag {
    padding: 0.55rem 0.7rem;
    font-size: 0.76rem;
  }

  /* Process Section */
  .process-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }
  .process-card {
    padding: 18px 14px;
    gap: 8px;
  }
  .process-num {
    font-size: 1.5rem;
  }
  .process-card h4 {
    font-size: 1.02rem;
  }
  .process-card p {
    font-size: 0.88rem;
  }

  /* Insights Section */
  .insights-section {
    padding: 24px 16px;
    margin: 24px 0 0;
  }
  .insights-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .insight-item {
    padding: 14px 10px;
    gap: 4px;
  }
  .insight-number {
    font-size: 1.5rem;
  }
  .insight-label {
    font-size: 0.72rem;
  }

  /* Contact Section */
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
  .contact-info {
    gap: 12px;
  }
  .channel-box {
    padding: 12px 14px;
  }
  .channel-icon {
    width: 36px;
    height: 36px;
  }
  .channel-link {
    font-size: 0.86rem;
    word-break: break-all;
  }
  .contact-form-card {
    padding: 20px 16px;
    gap: 16px;
  }
  .form-input,
  .form-textarea {
    font-size: 16px; /* Prevents auto-zoom on iOS */
    padding: 11px 12px;
  }
  .btn-submit {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
  }

  /* Footer */
  .footer-inner {
    padding: 24px 16px;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 14px;
  }
  .footer-brand {
    justify-content: center;
  }
  .footer-copy,
  .footer-tech {
    font-size: 0.78rem;
  }
  .back-to-top {
    align-self: center;
    width: 100%;
    max-width: 220px;
    justify-content: center;
    padding: 10px 16px;
  }
}

@media (max-width: 600px) {
  .header-inner {
    padding: 10px 14px;
    gap: 8px;
  }
  .brand {
    gap: 8px;
  }
  .brand-mark {
    height: 32px;
    padding: 0 8px;
    font-size: 0.76rem;
  }
  .brand-name {
    font-size: 0.95rem;
  }
  .status-label {
    display: none;
  }
  .status-indicator {
    gap: 0;
  }
  .nav-controls {
    gap: 6px;
  }
  .lang-switch {
    padding: 2px;
  }
  .lang-btn {
    padding: 3px 6px;
    font-size: 0.68rem;
  }
  .mobile-menu-btn {
    width: 34px;
    height: 34px;
  }
}

@media (max-width: 420px) {
  .hero-headline {
    font-size: 1.75rem;
  }
  .metrics-stack {
    grid-template-columns: 1fr;
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
  .project-links {
    flex-direction: column;
  }
  .project-links .btn {
    width: 100%;
  }
}

@media (max-width: 360px) {
  .header-inner {
    padding: 8px 10px;
    gap: 4px;
  }
  .brand-mark {
    display: none;
  }
  .brand-name {
    font-size: 0.9rem;
  }
  .lang-btn {
    padding: 2px 4px;
    font-size: 0.64rem;
  }
}

/* ==========================================================================
   14. ACCESSIBILITY — PREFERS-REDUCED-MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .dw-stream-1,
  .dw-stream-2,
  .dw-stream-3,
  .dw-stream-4 {
    animation: none !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}