/* =============================================
   InterviewIQ — Global Styles  (polished)
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Mono:wght@400;500&family=Karla:wght@300;400;500;600&display=swap');

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

:root {
  --black:   #080a0f;
  --navy:    #0d1220;
  --panel:   #111827;
  --panel2:  #1a2235;
  --border:  rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.12);
  --amber:   #f5a623;
  --amber-dim: rgba(245,166,35,0.15);
  --white:   #f0ece4;
  --muted:   #6b7280;
  --green:   #22c55e;
  --red:     #ef4444;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: 'Karla', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle noise texture overlay */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.35;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(8,10,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.nav-logo {
  font-family: 'Bebas Neue', sans-serif; font-size: 1.5rem;
  letter-spacing: 0.08em; color: var(--white); text-decoration: none;
}
.nav-logo span { color: var(--amber); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-family: 'DM Mono', monospace; font-size: 0.68rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  font-family: 'DM Mono', monospace; font-size: 0.75rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.7rem 1.6rem;
  border: none; cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  font-weight: 500;
  white-space: nowrap;
}
.btn-primary { background: var(--amber); color: var(--black); }
.btn-primary:hover { background: #ffc84a; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--white); border: 1px solid var(--border2); }
.btn-outline:hover { border-color: var(--amber); color: var(--amber); }
.btn-danger { background: var(--red); color: var(--white); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* ── PAGE WRAPPER ── */
.page { padding-top: 5rem; min-height: 100vh; }

/* ── CARD ── */
.card {
  background: var(--panel); border: 1px solid var(--border); padding: 1.5rem; position: relative;
}
.card::before {
  content: ''; position: absolute; top: -1px; left: 0; right: 0;
  height: 2px; background: linear-gradient(90deg, var(--amber), transparent);
}

/* ── MONO LABEL ── */
.mono {
  font-family: 'DM Mono', monospace; font-size: 0.65rem;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; } 50% { opacity: 0.3; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.fade-up   { animation: fadeUp 0.6s ease forwards; }
.fade-up-1 { animation: fadeUp 0.6s ease forwards 0.1s;  opacity: 0; }
.fade-up-2 { animation: fadeUp 0.6s ease forwards 0.22s; opacity: 0; }
.fade-up-3 { animation: fadeUp 0.6s ease forwards 0.38s; opacity: 0; }
.fade-up-4 { animation: fadeUp 0.6s ease forwards 0.54s; opacity: 0; }

/* ── SELECT ── */
select {
  background: var(--panel2);
  border: 1px solid var(--border2);
  color: var(--white);
  font-family: 'Karla', sans-serif; font-size: 0.95rem;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  width: 100%; cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23f5a623' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 1rem center;
  transition: border-color 0.2s;
}
select:focus { outline: none; border-color: var(--amber); }
select option { background: var(--panel2); }

/* ── PROGRESS BAR ── */
.progress-bar-wrap {
  background: var(--panel2); height: 4px; width: 100%; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; background: var(--amber); transition: width 0.5s cubic-bezier(0.4,0,0.2,1);
}

/* ── SPINNER ── */
.spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--border2); border-top-color: var(--amber);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}

/* ── WARNING BANNER ── */
.warning-banner {
  display: none; position: fixed; top: 5rem; left: 50%; transform: translateX(-50%);
  background: rgba(245,166,35,0.12); border: 1px solid var(--amber); color: var(--amber);
  font-family: 'DM Mono', monospace; font-size: 0.7rem; letter-spacing: 0.1em;
  padding: 0.6rem 1.4rem; z-index: 400; text-transform: uppercase; white-space: nowrap;
}
.warning-banner.show { display: block; animation: fadeIn 0.3s ease; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav { padding: 1rem 1.25rem; }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .btn { padding: 0.65rem 1.2rem; font-size: 0.7rem; }
}