@import url('https://fonts.googleapis.com/css2?family=Black+Han+Sans&family=Space+Mono:wght@400;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface2: #1a1a1a;
  --surface3: #222222;
  --border: #2a2a2a;
  --border2: #333333;
  --text: #e8e6df;
  --text2: #888880;
  --text3: #555550;
  --accent: #ff3c00;
  --accent2: #ff6b35;
  --accent3: #ffaa00;
  --green: #00e87a;
  --blue: #4488ff;
  --purple: #aa55ff;
  --mono: 'Space Mono', monospace;
  --display: 'Black Han Sans', sans-serif;
  --body: 'Inter', sans-serif;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 14px;
  min-height: 100vh;
}

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

/* NAV */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-family: var(--display);
  font-size: 20px;
  color: var(--accent);
  letter-spacing: 3px;
  text-decoration: none;
  white-space: nowrap;
}

.nav-logo span {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 2px;
  display: block;
  margin-top: -4px;
}

.nav-links { display: flex; gap: 4px; flex: 1; }

.nav-link {
  background: none;
  border: none;
  color: var(--text2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}

.nav-link:hover { background: var(--surface2); color: var(--text); }
.nav-link.active { background: var(--accent); color: #fff; }

.nav-right { display: flex; align-items: center; gap: 12px; }

.role-badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 3px;
  background: var(--surface3);
  border: 1px solid var(--border2);
  color: var(--accent3);
  text-transform: uppercase;
}

.user-email {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text3);
}

.btn-signout {
  background: none;
  border: 1px solid var(--border2);
  color: var(--text2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 6px 12px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-signout:hover { border-color: var(--accent); color: var(--accent); }

/* PAGE */
.page { padding: 24px; max-width: 1100px; margin: 0 auto; }

/* BUTTONS */
.btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 10px 18px;
  border-radius: 4px;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-secondary { background: none; border: 1px solid var(--border2); color: var(--text2); }
.btn-secondary:hover { border-color: var(--text); color: var(--text); }
.btn-green { background: var(--green); color: #000; }
.btn-green:hover { opacity: 0.85; }
.btn-danger { background: none; border: 1px solid #3a1010; color: #cc3333; }
.btn-danger:hover { background: #1a0505; border-color: #cc3333; }
.btn-sm { padding: 6px 12px; font-size: 10px; }

/* CARDS */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

/* TAG */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 1px;
  padding: 2px 7px;
  border-radius: 2px;
  text-transform: uppercase;
}

.tag-pending { background: #1a1400; color: var(--accent3); border: 1px solid var(--accent3); }
.tag-confirmed { background: #001a08; color: var(--green); border: 1px solid var(--green); }
.tag-declined { background: #1a0000; color: #cc3333; border: 1px solid #cc3333; }
.tag-split { background: #0a1400; color: var(--green); border: 1px solid var(--green); }
.tag-rental { background: #010a1a; color: var(--blue); border: 1px solid var(--blue); }

/* FORM */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }

.form-group label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
}

.form-input {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--body);
  font-size: 13px;
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}

.form-input:focus { border-color: var(--accent); }

/* LOADING */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 2px;
}

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text3);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 1px;
  border: 1px dashed var(--border);
  border-radius: 8px;
}

/* MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 12px;
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--surface);
}

.modal-title {
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: 2px;
}

.modal-close {
  background: none;
  border: 1px solid var(--border2);
  color: var(--text2);
  width: 30px;
  height: 30px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.15s;
}

.modal-close:hover { border-color: var(--accent); color: var(--accent); }
.modal-body { padding: 24px; }

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #001a08;
  border: 1px solid var(--green);
  color: var(--green);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 12px 20px;
  border-radius: 6px;
  z-index: 999;
  animation: slideIn 0.2s ease;
}

.toast.error { background: #1a0500; border-color: var(--accent); color: var(--accent); }

@keyframes slideIn { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

function showToast(msg, type = 'success') {
  const t = document.createElement('div');
  t.className = `toast ${type === 'error' ? 'error' : ''}`;
  t.textContent = msg;
  document.body.appendChild(t);
  setTimeout(() => t.remove(), 3000);
}