/* ===========================
   NeoTranscribe - Global CSS
   Flat Design + Neo-Brutalism
   =========================== */

:root {
  --bg-deep: #0a1929;
  --bg-main: #0d2137;
  --bg-card: #0f2a42;
  --bg-input: #0a1f33;
  --accent-cyan: #00c9a7;
  --accent-teal: #00bcd4;
  --accent-green: #00e5a0;
  --accent-red: #ff5252;
  --accent-blue: #1de9b6;
  --text-primary: #e8f4f8;
  --text-secondary: #7fb3c8;
  --text-muted: #4a7a95;
  --border: #1a4060;
  --border-accent: #00c9a7;
  --shadow-brutal: 4px 4px 0px #00c9a7;
  --shadow-brutal-strong: 6px 6px 0px #00c9a7;
  --shadow-brutal-red: 4px 4px 0px #ff5252;
  --radius: 0px;
  --font-main: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

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

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }

p { color: var(--text-secondary); }

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--accent-green); }

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-input);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  color: var(--accent-cyan);
}

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container--narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

/* ---- NAV ---- */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 25, 41, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-accent);
  padding: 0 2rem;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--accent-green);
  box-shadow: 2px 2px 0 var(--accent-green);
  flex-shrink: 0;
  transition: transform 0.15s, box-shadow 0.15s;
}

.nav-logo:hover .nav-logo-icon {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--accent-green);
}

.nav-logo-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--bg-deep);
}

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

.nav-brand-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.nav-brand-sub {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width 0.2s;
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent-cyan) !important;
  color: var(--bg-deep) !important;
  padding: 0.4rem 1.2rem;
  border: 2px solid var(--accent-cyan);
  box-shadow: var(--shadow-brutal);
  font-weight: 700 !important;
  transition: transform 0.15s, box-shadow 0.15s !important;
}

.nav-cta:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-brutal-strong) !important;
  color: var(--bg-deep) !important;
}

.nav-cta::after { display: none !important; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid currentColor;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
  position: relative;
  user-select: none;
}

.btn:active {
  transform: translate(2px, 2px) !important;
  box-shadow: none !important;
}

.btn-primary {
  background: var(--accent-cyan);
  color: var(--bg-deep);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-brutal);
}

.btn-primary:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--accent-green);
  color: var(--bg-deep);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-brutal);
}

.btn-secondary:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-red {
  background: var(--accent-red);
  color: #fff;
  border-color: var(--accent-red);
  box-shadow: var(--shadow-brutal-red);
}

.btn-red:hover {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--accent-red);
  color: #fff;
}

/* ---- CARDS ---- */
.card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  padding: 2rem;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 5px 5px 0 var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* ---- TAG / BADGE ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1.5px solid var(--accent-cyan);
  color: var(--accent-cyan);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
}

/* ---- SECTION HEADER ---- */
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--accent-cyan);
}

.section-title {
  margin-bottom: 1rem;
}

.section-title span {
  color: var(--accent-cyan);
}

.section-desc {
  max-width: 580px;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ---- DIVIDER ---- */
.divider {
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  margin: 0;
}

/* ---- GRID ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

/* ---- FOOTER ---- */
footer {
  background: var(--bg-main);
  border-top: 2px solid var(--border-accent);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-brand p {
  font-size: 0.85rem;
  margin-top: 0.5rem;
  max-width: 280px;
}

.footer-links h4 {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---- HIGHLIGHT LINE LEFT ---- */
.accent-bar {
  border-left: 3px solid var(--accent-cyan);
  padding-left: 1rem;
}

/* ---- KEYBOARD KEY ---- */
kbd {
  display: inline-flex;
  align-items: center;
  background: var(--bg-input);
  border: 1.5px solid var(--border-accent);
  box-shadow: 2px 2px 0 var(--accent-cyan);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  letter-spacing: 0.05em;
}

/* ---- ANIMATIONS ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 201, 167, 0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(0, 201, 167, 0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes scanline {
  from { transform: translateY(-100%); }
  to   { transform: translateY(100vh); }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease both;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ---- SCROLL REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---- TOOLTIP ---- */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1.5px solid var(--border-accent);
  box-shadow: var(--shadow-brutal);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 50;
}

[data-tooltip]:hover::after { opacity: 1; }

/* ---- MOBILE ---- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent-cyan);
  transition: transform 0.2s, opacity 0.2s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-main);
    border-bottom: 2px solid var(--border-accent);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1.2rem;
    align-items: flex-start;
  }

  .nav-links.open { display: flex; }

  section { padding: 4rem 0; }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.6rem; }
}

/* ---- UTILITY ---- */
.text-accent { color: var(--accent-cyan); }
.text-green  { color: var(--accent-green); }
.text-red    { color: var(--accent-red); }
.text-muted  { color: var(--text-muted); }
.fw-bold     { font-weight: 700; }
.mono        { font-family: var(--font-mono); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

/* ---- LANGUAGE SWITCHER ---- */
.lang-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-switcher-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  font-family: var(--font-main);
}

.lang-switcher-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.lang-switcher-btn .lang-flag-sm {
  font-size: 0.9rem;
  line-height: 1;
}

.lang-switcher-btn svg {
  width: 10px;
  height: 10px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.lang-switcher.open .lang-switcher-btn svg {
  transform: rotate(180deg);
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-card);
  border: 2px solid var(--border-accent);
  box-shadow: var(--shadow-brutal);
  min-width: 140px;
  z-index: 200;
  flex-direction: column;
}

.lang-switcher.open .lang-dropdown {
  display: flex;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  border-bottom: 1px solid var(--border);
}

.lang-option:last-child { border-bottom: none; }

.lang-option:hover {
  background: rgba(0,201,167,0.08);
  color: var(--accent-cyan);
}

.lang-option.active {
  color: var(--accent-cyan);
  font-weight: 700;
}

.lang-option .lang-flag-sm { font-size: 1rem; }

/* nav-links separator */
.nav-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 0.25rem;
}