/* style.css — KMT Design System */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800&family=Inter:wght@300;400;500;600&display=swap');

/* ── Variables ─────────────────────────────────────────── */
:root {
  --lime:    #c4f135;
  --lime-dk: #a8d020;
  --black:   #0a0a0a;
  --dark:    #111111;
  --card:    #161616;
  --border:  #242424;
  --mid:     #666;
  --text:    #ffffff;
  --red:     #e53935;
  --green:   #4caf50;
  --font-head: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius:  12px;
  --radius-sm: 8px;
  --shadow:  0 4px 24px rgba(0,0,0,.4);
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ── Typography ────────────────────────────────────────── */
h1,h2,h3,h4 { font-family: var(--font-head); line-height: 1.1; }
h1 { font-size: clamp(2rem,6vw,3.5rem); }
h2 { font-size: clamp(1.4rem,4vw,2rem); }
h3 { font-size: 1.2rem; }
p  { color: #aaa; }
a  { color: var(--lime); text-decoration: none; }
a:hover { text-decoration: underline; }
small { font-size: 0.8rem; color: var(--mid); }

/* ── Layout ────────────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 680px; margin: 0 auto; padding: 0 24px; }
.page { padding: 48px 0 80px; }
.page-title { margin-bottom: 36px; }
.page-title h1 { margin-bottom: 6px; }
.page-title p  { font-size: 1rem; }

/* ── Nav ───────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px; max-width: 1100px; margin: 0 auto;
}
.nav__logo img { height: 44px; display: block; }
.nav__logo span {
  font-family: var(--font-head); font-size: 1.1rem;
  letter-spacing: 1px; color: var(--lime);
}
.nav-spacer { flex: 1; }
.nav-name { font-weight: 600; font-size: 0.9rem; color: var(--mid); }
.nav-link {
  font-size: 0.9rem; font-weight: 500;
  color: #ccc; padding: 6px 0;
}
.nav-link:hover { color: var(--lime); text-decoration: none; }
#nav-user { display: flex; align-items: center; gap: 16px; }

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px; border-radius: var(--radius-sm);
  font-family: var(--font-head); font-size: 1rem; letter-spacing: 0.5px;
  font-weight: 700; cursor: pointer; border: none;
  transition: all .15s; white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-primary { background: var(--lime); color: var(--black); }
.btn-primary:hover:not(:disabled) { background: var(--lime-dk); transform: translateY(-1px); }
.btn-outline  { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover:not(:disabled)  { border-color: var(--lime); color: var(--lime); }
.btn-danger   { background: var(--red); color: #fff; }
.btn-danger:hover:not(:disabled)   { background: #c62828; }
.btn-ghost    { background: transparent; color: var(--mid); border: none; }
.btn-ghost:hover:not(:disabled)    { color: var(--text); }
.btn-sm  { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg  { padding: 16px 32px; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* ── Cards ─────────────────────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.card--lime { border-color: var(--lime); }

/* ── Forms ─────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media(max-width:600px){ .form-row { grid-template-columns: 1fr; } }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: #ccc; letter-spacing: .3px; }
input[type=text],
input[type=email],
input[type=tel],
input[type=date],
input[type=time],
input[type=number],
select,
textarea {
  width: 100%; padding: 13px 16px;
  background: #1a1a1a; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: var(--font-body); font-size: 15px;
  transition: border-color .2s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--lime);
}
input::placeholder, textarea::placeholder { color: #444; }
textarea { resize: vertical; min-height: 100px; }
select { appearance: none; cursor: pointer; }
.form-hint { font-size: 0.78rem; color: var(--mid); margin-top: 4px; }

/* Checkbox */
.checkbox-wrap { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; }
.checkbox-wrap input[type=checkbox] {
  width: 20px; height: 20px; min-width: 20px;
  accent-color: var(--lime); margin-top: 2px; cursor: pointer;
}
.checkbox-label { font-size: 0.9rem; color: #ccc; line-height: 1.5; }

/* Error */
.form-error {
  display: none; background: rgba(229,57,53,.12);
  border: 1px solid var(--red); border-radius: var(--radius-sm);
  padding: 12px 16px; color: #ef9a9a; font-size: 0.88rem; margin-bottom: 16px;
}

/* ── Schedule grid ─────────────────────────────────────── */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.schedule-day { font-family: var(--font-head); font-size: 0.75rem; letter-spacing: 1.5px; color: var(--mid); margin-bottom: 8px; text-transform: uppercase; }
.class-chip {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  transition: border-color .2s;
}
.class-chip:hover { border-color: #444; }
.class-chip--booked { border-color: var(--lime); }
.class-chip__time { font-family: var(--font-head); font-size: 1rem; color: var(--lime); margin-bottom: 4px; }
.class-chip__name { font-size: 0.8rem; color: var(--mid); margin-bottom: 12px; }
.class-chip__count { font-size: 0.75rem; color: var(--mid); margin-top: 6px; }

/* ── Indemnity ─────────────────────────────────────────── */
.indemnity-scroll {
  background: #111; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px;
  max-height: 340px; overflow-y: auto;
  font-size: 0.85rem; color: #aaa; line-height: 1.7;
  margin-bottom: 20px;
}
.indemnity-scroll h4 { color: #fff; margin: 16px 0 6px; font-size: 0.9rem; }
.indemnity-scroll p  { color: #aaa; margin-bottom: 10px; }

/* ── Steps indicator ───────────────────────────────────── */
.steps { display: flex; gap: 0; margin-bottom: 36px; }
.step {
  flex: 1; padding: 10px; text-align: center;
  font-size: 0.75rem; font-weight: 600; letter-spacing: .5px;
  color: var(--mid); border-bottom: 2px solid var(--border);
  transition: all .2s;
}
.step--active { color: var(--lime); border-bottom-color: var(--lime); }
.step--done   { color: #555; border-bottom-color: #333; }

/* ── Badge ─────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 0.72rem; font-weight: 600; letter-spacing: .5px;
}
.badge-lime  { background: rgba(196,241,53,.15); color: var(--lime); }
.badge-green { background: rgba(76,175,80,.15); color: var(--green); }
.badge-red   { background: rgba(229,57,53,.15); color: var(--red); }
.badge-grey  { background: #222; color: var(--mid); }

/* ── Table ─────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th { text-align: left; padding: 10px 14px; font-size: 0.72rem; letter-spacing: 1px; color: var(--mid); text-transform: uppercase; border-bottom: 1px solid var(--border); }
td { padding: 12px 14px; border-bottom: 1px solid #1a1a1a; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #161616; }

/* ── Tabs ──────────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 32px; gap: 0; overflow-x: auto; }
.tab-btn {
  padding: 13px 20px; background: none; border: none;
  border-bottom: 2px solid transparent; color: var(--mid);
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; white-space: nowrap; transition: all .2s;
}
.tab-btn.active { color: var(--lime); border-bottom-color: var(--lime); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Toast ─────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: #1e1e1e; color: var(--text); border: 1px solid var(--border);
  padding: 12px 24px; border-radius: 40px; font-size: 0.9rem; font-weight: 500;
  z-index: 9999; opacity: 0; transition: all .3s; white-space: nowrap;
}
.toast--show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast--success { border-color: var(--green); color: var(--green); }
.toast--error   { border-color: var(--red);   color: #ef9a9a; }

/* ── Misc ──────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.text-lime { color: var(--lime); }
.text-mid  { color: var(--mid); }
.text-center { text-align: center; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center  { display: flex; justify-content: center; align-items: center; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.empty-state {
  text-align: center; padding: 48px 24px; color: var(--mid);
}
.empty-state .emoji { font-size: 40px; margin-bottom: 12px; }
.spinner {
  display: inline-block; width: 20px; height: 20px;
  border: 2px solid var(--border); border-top-color: var(--lime);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-screen {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 60vh; gap: 16px; color: var(--mid);
}