/* ═══════════════════════════════════════════════════════════════
   DRONE CONSTRUCTOR — Dark Military/Tech Theme
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg:          #060d1a;
  --bg2:         #0a1628;
  --card:        #0d1f3a;
  --card2:       #112240;
  --border:      #1a3a5c;
  --border-glow: #0d4f8c;
  --cyan:        #00d4ff;
  --cyan-dim:    rgba(0,212,255,0.12);
  --orange:      #ff6b00;
  --green:       #39ff14;
  --amber:       #f59e0b;
  --red:         #ef4444;
  --purple:      #a855f7;
  --text:        #c9d8e8;
  --text-dim:    #5a7a99;
  --text-head:   #e8f4ff;
  --white:       #ffffff;
  --nav-h:       62px;
  --radius:      12px;
  --radius-sm:   8px;
  --transition:  0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Background ─────────────────────────────────────────────── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}
.bg-glow {
  position: fixed; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 400px; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(0,212,255,0.06) 0%, transparent 70%);
}

/* ── Typography ─────────────────────────────────────────────── */
h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; color: var(--text-head); letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; font-weight: 600; color: var(--text-head); }
h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-head); }
p  { color: var(--text); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  background: var(--cyan); color: #000;
  font-family: inherit; font-weight: 700; font-size: 0.9rem;
  border: none; border-radius: var(--radius-sm);
  padding: 0.65rem 1.4rem; cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 0 20px rgba(0,212,255,0.3);
}
.btn-primary:hover { background: #33ddff; box-shadow: 0 0 30px rgba(0,212,255,0.5); transform: translateY(-1px); }
.btn-primary.disabled { opacity: 0.35; cursor: not-allowed; pointer-events: none; }
.btn-primary.small { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
.btn-primary.full-width { width: 100%; }

.btn-ghost {
  background: transparent; color: var(--cyan);
  font-family: inherit; font-weight: 500; font-size: 0.9rem;
  border: 1px solid var(--border-glow); border-radius: var(--radius-sm);
  padding: 0.65rem 1.4rem; cursor: pointer;
  transition: var(--transition);
}
.btn-ghost:hover { border-color: var(--cyan); background: var(--cyan-dim); }
.btn-ghost.small { padding: 0.4rem 0.9rem; font-size: 0.8rem; }

.btn-hero {
  background: linear-gradient(135deg, var(--cyan), #0088aa);
  color: #000; font-family: inherit; font-weight: 800; font-size: 1.05rem;
  border: none; border-radius: var(--radius-sm); padding: 0.85rem 2rem;
  cursor: pointer; transition: var(--transition);
  box-shadow: 0 0 40px rgba(0,212,255,0.35);
}
.btn-hero:hover { transform: translateY(-2px); box-shadow: 0 0 60px rgba(0,212,255,0.5); }

.btn-danger {
  background: transparent; color: var(--red);
  font-family: inherit; font-size: 0.8rem;
  border: 1px solid rgba(239,68,68,0.3); border-radius: 6px;
  padding: 0.4rem 0.8rem; cursor: pointer;
}
.btn-danger:hover { background: rgba(239,68,68,0.1); }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem;
  background: rgba(6,13,26,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: 'Space Mono', monospace; font-size: 1rem;
  color: var(--text-head); text-decoration: none;
  letter-spacing: 0.05em;
}
.nav-logo strong { color: var(--cyan); }

.step-progress {
  display: flex; align-items: center; gap: 0;
  flex: 1; max-width: 700px; margin: 0 2rem;
  overflow-x: auto; padding: 0.25rem 0;
}
.step-progress::-webkit-scrollbar { height: 3px; }
.step-progress::-webkit-scrollbar-track { background: transparent; }
.step-progress::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 2px; }

.prog-step {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  min-width: 52px; cursor: default;
  transition: var(--transition);
}
.prog-step.done { cursor: pointer; }
.prog-step.done:hover .prog-dot { border-color: var(--cyan); }

.prog-dot {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  background: var(--bg2); border: 1.5px solid var(--border);
  color: var(--text-dim); transition: var(--transition);
}
.prog-step.done .prog-dot { background: rgba(0,212,255,0.15); border-color: var(--cyan); color: var(--cyan); font-size: 0.65rem; }
.prog-step.active .prog-dot { background: var(--cyan); border-color: var(--cyan); color: #000; font-weight: 700; box-shadow: 0 0 12px rgba(0,212,255,0.5); }
.prog-step.locked .prog-dot { border-color: var(--border); color: var(--border-glow); font-size: 0.55rem; }

.prog-label { font-size: 0.55rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.prog-step.active .prog-label { color: var(--cyan); }
.prog-step.done .prog-label { color: rgba(0,212,255,0.6); }

.prog-line { width: 20px; height: 1.5px; background: var(--border); flex-shrink: 0; margin-bottom: 14px; }

.nav-actions { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.user-panel { display: flex; align-items: center; gap: 0.6rem; }
.auth-panel { display: flex; align-items: center; gap: 0.5rem; }
.user-rank { font-family: 'Space Mono', monospace; font-size: 0.7rem; color: var(--amber); letter-spacing: 0.05em; }
.user-name { font-size: 0.85rem; color: var(--text-head); font-weight: 600; }
.hidden { display: none !important; }

/* ── Main Content ───────────────────────────────────────────── */
#main-content {
  position: relative; z-index: 1;
  min-height: calc(100vh - var(--nav-h));
  padding-bottom: 4rem;
}

/* ── Landing Page ───────────────────────────────────────────── */
.landing { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

.landing-hero {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 3rem; align-items: center;
  padding: 5rem 0 4rem;
  min-height: 500px;
}
@media (max-width: 768px) { .landing-hero { grid-template-columns: 1fr; padding: 3rem 0 2rem; } }

.hero-drone { display: flex; justify-content: center; align-items: center; }
.hero-drone-svg {
  width: 100%; max-width: 380px;
  filter: drop-shadow(0 0 20px rgba(0,212,255,0.3));
  animation: floatDrone 4s ease-in-out infinite;
}
@keyframes floatDrone {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-badge {
  display: inline-block; font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.15em; color: var(--cyan);
  border: 1px solid rgba(0,212,255,0.3); border-radius: 4px;
  padding: 0.25rem 0.6rem; margin-bottom: 1.2rem;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800;
  line-height: 1.05; color: var(--white);
  text-shadow: 0 0 40px rgba(0,212,255,0.2);
  margin-bottom: 1.2rem;
}
.hero-title span { color: var(--cyan); }
.hero-sub { font-size: 1.05rem; color: var(--text); max-width: 480px; margin-bottom: 2rem; }
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

.landing-features {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem; padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
}
.feat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
  transition: var(--transition);
}
.feat-card:hover { border-color: var(--border-glow); transform: translateY(-2px); }
.fc-icon { font-size: 1.8rem; margin-bottom: 0.7rem; }
.feat-card h3 { margin-bottom: 0.4rem; font-size: 1rem; }
.feat-card p { font-size: 0.88rem; color: var(--text-dim); }

/* ── Saved Builds Panel ─────────────────────────────────────── */
.builds-panel { padding: 2rem 0; }
.saved-builds-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; margin-top: 1rem; }
.saved-build-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 1rem;
}
.sbc-icon { font-size: 1.5rem; }
.sbc-info { flex: 1; }
.sbc-name { font-weight: 600; font-size: 0.9rem; color: var(--text-head); }
.sbc-date { font-size: 0.75rem; color: var(--text-dim); }
.sbc-actions { display: flex; gap: 0.4rem; }

/* ── Step Page ──────────────────────────────────────────────── */
.step-page { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem; }

.step-header { margin-bottom: 2rem; }
.step-header h1 { margin-bottom: 0.4rem; }
.step-header p { color: var(--text-dim); font-size: 1rem; }
.breadcrumb { font-size: 0.8rem; color: var(--cyan); margin-bottom: 0.5rem; opacity: 0.8; }

.step-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ── Class Selection ────────────────────────────────────────── */
.class-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.2rem;
}
.class-card {
  position: relative; overflow: hidden;
  background: var(--card2); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem;
  cursor: pointer; transition: all var(--transition);
}
.class-card::before {
  content: ''; position: absolute; inset: 0;
  background: var(--card-grad, linear-gradient(135deg,#0a1628,#112240));
  opacity: 0; transition: opacity var(--transition);
}
.class-card:hover, .class-card.selected {
  border-color: var(--card-color, var(--cyan));
  box-shadow: 0 0 24px rgba(var(--card-color, 0,212,255), 0.15);
  transform: translateY(-3px);
}
.class-card:hover::before, .class-card.selected::before { opacity: 1; }
.class-card.selected { box-shadow: 0 0 0 2px var(--card-color, var(--cyan)), 0 0 30px rgba(0,212,255,0.2); }
.card-glow { position: absolute; top: -20px; right: -20px; width: 80px; height: 80px; border-radius: 50%; background: var(--card-color,var(--cyan)); opacity: 0.06; filter: blur(20px); }
.class-icon { font-size: 2rem; margin-bottom: 0.6rem; position: relative; z-index: 1; }
.class-name { font-size: 1.15rem; font-weight: 700; color: var(--text-head); position: relative; z-index: 1; }
.class-tagline { font-size: 0.8rem; color: var(--card-color, var(--cyan)); font-family: 'Space Mono', monospace; letter-spacing: 0.05em; margin: 0.2rem 0 0.6rem; position: relative; z-index: 1; }
.class-desc { font-size: 0.86rem; color: var(--text-dim); line-height: 1.5; margin-bottom: 0.8rem; position: relative; z-index: 1; }
.class-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.6rem; position: relative; z-index: 1; }
.tag { font-size: 0.7rem; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 4px; padding: 0.15rem 0.5rem; color: var(--text-dim); }
.class-diff { font-size: 0.75rem; color: var(--text-dim); position: relative; z-index: 1; }
.class-diff strong { color: var(--text); }

/* ── Mission Selection ──────────────────────────────────────── */
.mission-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.mission-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem;
  cursor: pointer; transition: all var(--transition);
  text-align: center;
}
.mission-card:hover, .mission-card.selected {
  border-color: var(--card-color, var(--cyan));
  background: var(--card2);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0,212,255,0.1);
}
.mission-card.selected { box-shadow: 0 0 0 2px var(--card-color, var(--cyan)); }
.mission-icon { font-size: 1.8rem; margin-bottom: 0.5rem; }
.mission-name { font-weight: 700; color: var(--text-head); font-size: 0.95rem; margin-bottom: 0.3rem; }
.mission-desc { font-size: 0.8rem; color: var(--text-dim); }

/* ── Parameters ─────────────────────────────────────────────── */
.params-form { display: flex; flex-direction: column; gap: 1.2rem; max-width: 640px; }
.param-row { display: flex; flex-direction: column; gap: 0.4rem; }
.param-row label { font-size: 0.88rem; font-weight: 600; color: var(--text-head); display: flex; justify-content: space-between; align-items: center; }
.param-val { font-family: 'Space Mono', monospace; font-size: 0.85rem; color: var(--cyan); }
.param-select {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  padding: 0.6rem 0.8rem; font-family: inherit; font-size: 0.9rem;
  cursor: pointer; transition: var(--transition);
}
.param-select:focus { outline: none; border-color: var(--cyan); }
.param-select option { background: var(--card2); }
.param-range {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 4px; border-radius: 2px;
  background: var(--border); cursor: pointer; accent-color: var(--cyan);
}
.param-range::-webkit-slider-thumb {
  -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 8px rgba(0,212,255,0.4); cursor: pointer;
}
.range-labels { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--text-dim); }
.toggle-row { flex-direction: row; justify-content: space-between; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.7rem 1rem; }
.toggle-switch { position: relative; display: inline-block; width: 46px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; background: var(--border);
  border-radius: 24px; cursor: pointer; transition: var(--transition);
}
.toggle-slider::before {
  content: ''; position: absolute; height: 16px; width: 16px;
  left: 4px; bottom: 4px; background: var(--text-dim);
  border-radius: 50%; transition: var(--transition);
}
.toggle-switch input:checked + .toggle-slider { background: rgba(0,212,255,0.3); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(22px); background: var(--cyan); }
.info-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem 1.2rem; color: var(--text-dim); font-size: 0.9rem; }

/* ── Weather ────────────────────────────────────────────────── */
.weather-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.weather-group { }
.weather-group-title { font-size: 0.85rem; font-weight: 700; color: var(--text-head); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.7rem; }
.weather-options { display: flex; flex-direction: column; gap: 0.5rem; }
.weather-option {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem;
  cursor: pointer; transition: all var(--transition);
}
.weather-option:hover { border-color: var(--cyan); background: var(--card2); }
.weather-option.selected { border-color: var(--cyan); background: var(--cyan-dim); }
.w-opt-label { font-weight: 600; font-size: 0.9rem; color: var(--text-head); }
.w-opt-desc { font-size: 0.78rem; color: var(--text-dim); margin: 0.1rem 0; }
.w-rating { font-size: 0.7rem; color: var(--cyan); letter-spacing: 2px; }

/* ── Deployment ─────────────────────────────────────────────── */
.deploy-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.deploy-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem;
  cursor: pointer; transition: all var(--transition);
}
.deploy-card:hover, .deploy-card.selected {
  border-color: var(--cyan); background: var(--card2);
  box-shadow: 0 0 16px rgba(0,212,255,0.1);
}
.deploy-card.selected { box-shadow: 0 0 0 2px var(--cyan); }
.deploy-icon { font-size: 1.8rem; margin-bottom: 0.5rem; }
.deploy-name { font-weight: 700; color: var(--text-head); margin-bottom: 0.3rem; }
.deploy-desc { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 0.7rem; }
.deploy-pros, .deploy-cons { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.78rem; }
.deploy-pros span { color: var(--green); }
.deploy-cons span { color: rgba(239,68,68,0.7); }

.auth-gate-notice {
  display: flex; align-items: center; gap: 1.2rem;
  background: rgba(0,212,255,0.05); border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius); padding: 1.2rem 1.5rem;
  margin-top: 1.5rem;
}
.gate-icon { font-size: 2rem; flex-shrink: 0; }
.gate-text p { font-size: 0.85rem; color: var(--text-dim); margin-top: 0.2rem; }
.gate-text strong { color: var(--cyan); }

/* ── Ready Designs ──────────────────────────────────────────── */
.designs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1.2rem; }
.design-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem;
  cursor: pointer; transition: all var(--transition); position: relative;
}
.design-card:hover, .design-card.selected {
  border-color: var(--cyan); background: var(--card2); transform: translateY(-2px);
}
.design-card.selected { box-shadow: 0 0 0 2px var(--cyan), 0 0 30px rgba(0,212,255,0.15); }
.scratch-card { border-style: dashed; }
.design-icon { font-size: 1.8rem; margin-bottom: 0.5rem; }
.design-name { font-size: 1.05rem; font-weight: 700; color: var(--text-head); }
.design-tagline { font-size: 0.78rem; color: var(--cyan); font-family: 'Space Mono', monospace; margin: 0.15rem 0 0.5rem; }
.design-desc { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 0.8rem; }
.design-specs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.8rem; }
.design-specs span { font-size: 0.72rem; background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: 4px; padding: 0.15rem 0.5rem; }
.design-parts { display: flex; flex-direction: column; gap: 0.25rem; }
.part-line { font-size: 0.78rem; color: var(--text-dim); display: flex; gap: 0.5rem; }
.part-line span { color: var(--text); }
.design-badge { position: absolute; top: 0.8rem; right: 0.8rem; font-size: 0.65rem; font-family: 'Space Mono', monospace; background: rgba(0,212,255,0.15); border: 1px solid var(--cyan); color: var(--cyan); border-radius: 4px; padding: 0.15rem 0.45rem; letter-spacing: 0.08em; }

/* ── BOM / Components ───────────────────────────────────────── */
.bom-summary-bar {
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.8rem 1.2rem;
  margin-bottom: 1.5rem; font-size: 0.88rem;
}
.bom-stat { color: var(--text-dim); }
.bom-stat strong { color: var(--cyan); }
.bom-table { display: flex; flex-direction: column; gap: 0.5rem; }
.bom-category { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.bom-cat-header { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--cyan); background: rgba(0,212,255,0.07); padding: 0.6rem 1rem; border-bottom: 1px solid var(--border); }
.bom-row {
  display: grid; grid-template-columns: 2fr 2fr 0.5fr 0.7fr 1.2fr;
  gap: 1rem; align-items: center;
  padding: 0.65rem 1rem; border-bottom: 1px solid rgba(26,58,92,0.5);
  font-size: 0.84rem; transition: var(--transition);
}
.bom-row:last-child { border-bottom: none; }
.bom-row:hover { background: var(--card2); }
.bom-name { font-weight: 600; color: var(--text-head); }
.bom-note { font-size: 0.72rem; color: var(--amber); display: block; font-weight: 400; margin-top: 2px; }
.bom-spec { color: var(--text-dim); }
.bom-qty { color: var(--text-dim); font-family: 'Space Mono', monospace; text-align: center; }
.bom-price { color: var(--green); font-family: 'Space Mono', monospace; font-weight: 700; }
.bom-source { font-size: 0.78rem; color: var(--text-dim); }
@media (max-width: 768px) { .bom-row { grid-template-columns: 1fr 1fr; font-size: 0.78rem; } .bom-source, .bom-qty { display: none; } }

/* ── Build Guide ────────────────────────────────────────────── */
.build-progress-bar { margin-bottom: 1.5rem; }
.bpb-label { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 0.4rem; }
.bpb-track { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.bpb-fill { height: 100%; background: linear-gradient(90deg, var(--cyan), #00ff88); border-radius: 3px; transition: width 0.4s ease; }
.cal-fill { background: linear-gradient(90deg, var(--amber), var(--orange)) !important; }

.guide-phases { display: flex; flex-direction: column; gap: 1rem; }
.phase-details { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.phase-summary {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 1rem 1.2rem; cursor: pointer;
  list-style: none; user-select: none;
  background: rgba(0,212,255,0.04);
}
.phase-summary::-webkit-details-marker { display: none; }
.phase-summary:hover { background: rgba(0,212,255,0.08); }
.phase-icon { font-size: 1.2rem; }
.phase-title { font-weight: 700; color: var(--text-head); flex: 1; }
.phase-duration { font-size: 0.78rem; color: var(--text-dim); font-family: 'Space Mono', monospace; }
.phase-steps { padding: 0.5rem 1rem 1rem; display: flex; flex-direction: column; gap: 0.5rem; }

.guide-step { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition); }
.guide-step.done { border-color: rgba(57,255,20,0.3); background: rgba(57,255,20,0.03); }
.step-check-label {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.75rem 1rem; cursor: pointer;
  font-size: 0.88rem;
}
.step-check-label input[type=checkbox] { accent-color: var(--green); width: 16px; height: 16px; cursor: pointer; }
.step-num { font-family: 'Space Mono', monospace; font-size: 0.72rem; color: var(--cyan); flex-shrink: 0; }
.step-title-text { font-weight: 600; color: var(--text-head); }
.guide-step.done .step-title-text { text-decoration: line-through; color: var(--text-dim); }
.step-body { padding: 0 1rem 0.8rem 2.8rem; font-size: 0.84rem; color: var(--text-dim); border-top: 1px solid var(--border); padding-top: 0.6rem; }
.step-tips { margin-top: 0.5rem; color: var(--amber); font-size: 0.82rem; }
.step-warnings { margin-top: 0.5rem; color: var(--red); font-size: 0.82rem; background: rgba(239,68,68,0.06); padding: 0.4rem 0.6rem; border-radius: 4px; }

/* ── Calibration ────────────────────────────────────────────── */
.cal-list { display: flex; flex-direction: column; gap: 0.7rem; }
.cal-item { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.cal-item.cal-critical { border-left: 3px solid var(--amber); }
.cal-item.cal-done { border-color: rgba(57,255,20,0.3); background: rgba(57,255,20,0.03); }
.cal-check-label {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.9rem 1.2rem; cursor: pointer; background: var(--card);
}
.cal-check-label input { accent-color: var(--green); width: 16px; height: 16px; }
.cal-icon { font-size: 1.1rem; }
.cal-title { font-weight: 600; color: var(--text-head); font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }
.critical-badge { font-size: 0.6rem; font-family: 'Space Mono', monospace; background: rgba(245,158,11,0.15); border: 1px solid var(--amber); color: var(--amber); border-radius: 3px; padding: 0.1rem 0.4rem; letter-spacing: 0.05em; }
.cal-body { padding: 0 1.2rem 1rem; border-top: 1px solid var(--border); }
.cal-sw { font-size: 0.78rem; color: var(--text-dim); margin: 0.7rem 0 0.4rem; }
.cal-sw strong { color: var(--cyan); }
.cal-desc { font-size: 0.85rem; color: var(--text); margin-bottom: 0.6rem; }
.cal-steps { padding-left: 1.2rem; font-size: 0.83rem; color: var(--text-dim); display: flex; flex-direction: column; gap: 0.3rem; }
.cal-warning { margin-top: 0.7rem; font-size: 0.82rem; color: var(--red); background: rgba(239,68,68,0.07); border: 1px solid rgba(239,68,68,0.2); border-radius: 6px; padding: 0.5rem 0.8rem; }

/* ── Training ───────────────────────────────────────────────── */
.track-tabs { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
.track-tab {
  background: var(--card); border: 1px solid var(--border);
  color: var(--text-dim); font-family: inherit; font-size: 0.88rem; font-weight: 600;
  border-radius: var(--radius-sm); padding: 0.6rem 1.2rem; cursor: pointer; transition: var(--transition);
}
.track-tab.active, .track-tab:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
.training-header-card {
  display: flex; align-items: center; gap: 1.2rem;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem 1.5rem;
  margin-bottom: 1.2rem;
}
.th-icon { font-size: 2rem; }
.training-header-card h2 { margin-bottom: 0.2rem; }
.training-header-card p { font-size: 0.88rem; color: var(--text-dim); }
.training-modules { display: flex; flex-direction: column; gap: 0.7rem; }
.training-module { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.training-module summary {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.9rem 1.2rem; cursor: pointer; list-style: none; user-select: none;
}
.training-module summary::-webkit-details-marker { display: none; }
.training-module summary:hover { background: var(--cyan-dim); }
.mod-icon { font-size: 1.1rem; }
.mod-title { font-weight: 700; color: var(--text-head); flex: 1; }
.mod-dur { font-size: 0.76rem; color: var(--text-dim); font-family: 'Space Mono', monospace; }
.mod-body { padding: 0 1.2rem 1rem; border-top: 1px solid var(--border); }
.mod-desc { font-size: 0.86rem; color: var(--text-dim); margin: 0.7rem 0 0.7rem; }
.mod-exercises { padding-left: 1.2rem; font-size: 0.84rem; color: var(--text); display: flex; flex-direction: column; gap: 0.35rem; }

.simulator-rec { margin-top: 1.5rem; }
.simulator-rec h3 { margin-bottom: 0.8rem; }
.sim-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.8rem; }
.sim-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem; }
.sim-name { font-weight: 700; color: var(--text-head); margin-bottom: 0.3rem; }
.sim-desc { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 0.3rem; }
.sim-price { font-size: 0.78rem; color: var(--green); font-family: 'Space Mono', monospace; }

/* ── Summary ────────────────────────────────────────────────── */
.summary-page .step-header { text-align: center; }
.summary-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; max-width: 800px; margin: 0 auto; }
.sum-title { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.sum-icon { font-size: 2.5rem; }
.sum-title h2 { margin-bottom: 0.3rem; }
.sum-class, .sum-mission { font-size: 0.8rem; background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.2); color: var(--cyan); border-radius: 4px; padding: 0.15rem 0.5rem; margin-right: 0.5rem; }
.sum-stats { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.5rem; padding: 1.2rem; background: var(--card2); border-radius: var(--radius-sm); }
.sum-stat { flex: 1; min-width: 100px; text-align: center; }
.ss-val { font-size: 1.4rem; font-weight: 800; color: var(--cyan); font-family: 'Space Mono', monospace; }
.ss-label { font-size: 0.72rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.2rem; }
.sum-section { margin-bottom: 1.5rem; }
.sum-section h3 { margin-bottom: 0.7rem; color: var(--text-dim); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.07em; }
.sum-design-row { display: flex; align-items: center; gap: 1rem; background: var(--card2); border-radius: var(--radius-sm); padding: 0.8rem; }
.sd-icon { font-size: 1.5rem; }
.sum-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.sum-table td { padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); }
.sum-table tr:last-child td { border-bottom: none; }
.sum-table td:first-child { color: var(--text-dim); width: 40%; text-transform: capitalize; }
.sum-table td:last-child { color: var(--text-head); font-weight: 500; }
.sum-bom { display: flex; flex-direction: column; gap: 0.35rem; }
.sum-bom-row { display: flex; justify-content: space-between; font-size: 0.83rem; padding: 0.3rem 0; border-bottom: 1px solid rgba(26,58,92,0.4); }
.sbr-name { color: var(--text-head); font-weight: 500; }
.sbr-spec { color: var(--text-dim); }
.sum-more { font-size: 0.78rem; color: var(--text-dim); text-align: center; padding: 0.4rem; }
.sum-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.5rem; padding-top: 1.2rem; border-top: 1px solid var(--border); }

/* ── Spec Panel ─────────────────────────────────────────────── */
.spec-panel {
  position: fixed; right: 1.2rem; top: 80px;
  width: 200px; background: rgba(10,22,40,0.95);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; font-size: 0.78rem; z-index: 50;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
@media (max-width: 1320px) { .spec-panel { display: none !important; } }
.spec-header { font-family: 'Space Mono', monospace; font-size: 0.65rem; color: var(--cyan); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.8rem; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.spec-row { display: flex; justify-content: space-between; gap: 0.5rem; padding: 0.2rem 0; }
.spec-row span { color: var(--text-dim); }
.spec-row strong { color: var(--text-head); font-size: 0.75rem; text-align: right; max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Auth Modal ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(6,13,26,0.8); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.auth-modal {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 2rem;
  width: 100%; max-width: 400px; position: relative;
  animation: slideUp 0.2s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  background: none; border: none; color: var(--text-dim);
  font-size: 1.1rem; cursor: pointer; padding: 0.2rem 0.4rem;
}
.modal-close:hover { color: var(--text-head); }
.auth-tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.auth-tab { flex: 1; background: none; border: none; color: var(--text-dim); font-family: inherit; font-size: 0.95rem; padding: 0.7rem; cursor: pointer; transition: var(--transition); border-bottom: 2px solid transparent; }
.auth-tab.active { color: var(--cyan); border-bottom-color: var(--cyan); }
.auth-header { text-align: center; margin-bottom: 1.5rem; }
.auth-logo { font-size: 2rem; margin-bottom: 0.5rem; }
.auth-header h2 { margin-bottom: 0.3rem; }
.auth-header p { font-size: 0.85rem; color: var(--text-dim); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-head); margin-bottom: 0.4rem; }
.form-group input {
  width: 100%; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  padding: 0.7rem 0.9rem; font-family: inherit; font-size: 0.9rem;
  transition: var(--transition);
}
.form-group input:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.auth-error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: var(--red); border-radius: var(--radius-sm); padding: 0.6rem 0.8rem; font-size: 0.84rem; margin-bottom: 1rem; }

/* ── Toast ──────────────────────────────────────────────────── */
.toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 300; display: flex; flex-direction: column; gap: 0.5rem; }
.toast {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.75rem 1rem; border-radius: var(--radius-sm); min-width: 260px; max-width: 380px;
  font-size: 0.86rem; box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  transform: translateX(120%); transition: transform 0.35s ease;
}
.toast.show { transform: translateX(0); }
.toast button { background: none; border: none; cursor: pointer; font-size: 0.8rem; opacity: 0.7; color: inherit; }
.toast-success { background: rgba(57,255,20,0.1); border: 1px solid rgba(57,255,20,0.3); color: var(--green); }
.toast-error   { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: var(--red); }
.toast-info    { background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.3); color: var(--cyan); }

/* ── Print ──────────────────────────────────────────────────── */
@media print {
  .nav, .step-progress, .step-nav, .spec-panel, .toast-container, .bg-grid, .bg-glow { display: none !important; }
  body { background: white; color: black; }
  .summary-card { border: 1px solid #ccc; }
  .sum-stat .ss-val { color: #000; }
}