/* ===== ROOT VARIABLES ===== */
:root {
  --bg: #0a0a0f;
  --surface: #13131a;
  --surface2: #1c1c28;
  --border: rgba(255,255,255,0.07);
  --text: #f0f0f5;
  --text-muted: #6b6b80;
  --red: #ff2233;
  --red-dark: #cc0011;
  --red-glow: rgba(255,34,51,0.25);
  --orange: #ff6b00;
  --green: #00d46a;
  --blue: #0099ff;
  --yellow: #ffd600;
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
}

/* Background texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255,34,51,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(255,107,0,0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ===== APP SHELL ===== */
#app {
  width: 100%;
  max-width: 420px;
  height: 100vh;
  max-height: 900px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  z-index: 1;
}

/* ===== HEADER ===== */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
}

.header-left { display: flex; align-items: center; gap: 10px; }

.logo-dot {
  width: 10px; height: 10px;
  background: var(--red);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--red), 0 0 20px var(--red-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.app-name {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 3px;
  color: var(--text);
}

.header-right { display: flex; align-items: center; gap: 10px; }

.battery-badge {
  font-size: 11px;
  font-weight: 600;
  background: var(--surface2);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.icon-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.2s;
}
.icon-btn:hover { background: var(--surface); border-color: var(--red); }

/* ===== STATUS BAR ===== */
.status-bar {
  padding: 8px 20px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3px;
  flex-shrink: 0;
  transition: background 0.4s;
}
.status-ready { background: rgba(0, 212, 106, 0.1); color: var(--green); border-bottom: 1px solid rgba(0,212,106,0.15); }
.status-active { background: rgba(255,34,51,0.15); color: var(--red); border-bottom: 1px solid rgba(255,34,51,0.3); }
.status-locating { background: rgba(0,153,255,0.1); color: var(--blue); border-bottom: 1px solid rgba(0,153,255,0.15); }
.status-warning { background: rgba(255,214,0,0.1); color: var(--yellow); border-bottom: 1px solid rgba(255,214,0,0.15); }

/* ===== PAGES ===== */
.page {
  display: none;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 70px;
  scrollbar-width: none;
}
.page::-webkit-scrollbar { display: none; }
.page.active { display: flex; }

/* ===== INFO CARDS ===== */
.info-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 16px 16px 8px;
}

.info-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.3s;
}
.info-card:hover { border-color: rgba(255,255,255,0.12); }

.card-icon { font-size: 20px; flex-shrink: 0; }
.card-body { flex: 1; min-width: 0; }
.card-label { font-size: 10px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; }
.card-value { font-size: 12px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }

.mini-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  font-family: var(--font-body);
}
.mini-btn:hover { border-color: var(--red); color: var(--red); }

/* ===== SOS BUTTON ===== */
.sos-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px 0 20px;
  flex-shrink: 0;
}

.sos-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--red-glow);
  animation: ring-expand 2.5s ease-out infinite;
}
.sos-ring-1 { width: 160px; height: 160px; animation-delay: 0s; }
.sos-ring-2 { width: 200px; height: 200px; animation-delay: 0.6s; }
.sos-ring-3 { width: 240px; height: 240px; animation-delay: 1.2s; }

@keyframes ring-expand {
  0% { transform: scale(0.85); opacity: 0.5; }
  100% { transform: scale(1.1); opacity: 0; }
}

.sos-btn {
  position: relative;
  width: 150px; height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ff4455, var(--red) 50%, var(--red-dark));
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 0 0 3px rgba(255,34,51,0.3),
    0 0 30px rgba(255,34,51,0.4),
    0 8px 40px rgba(0,0,0,0.5);
  transition: transform 0.1s, box-shadow 0.2s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
  z-index: 2;
}

.sos-btn:active, .sos-btn.holding {
  transform: scale(0.95);
  box-shadow:
    0 0 0 6px rgba(255,34,51,0.5),
    0 0 60px rgba(255,34,51,0.7),
    0 4px 20px rgba(0,0,0,0.5);
}

.sos-label {
  font-family: var(--font-display);
  font-size: 52px;
  color: white;
  line-height: 1;
  text-shadow: 0 2px 10px rgba(0,0,0,0.4);
  position: relative;
  z-index: 2;
}

.sos-sub {
  font-size: 9px;
  color: rgba(255,255,255,0.75);
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-top: 2px;
  position: relative;
  z-index: 2;
}

/* SVG progress ring */
.sos-progress {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 3;
  pointer-events: none;
}

#sosProgressCircle {
  transition: stroke-dashoffset 0.05s linear;
}

/* ===== QUICK ACTIONS ===== */
.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 0 16px 16px;
}

.action-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.25s;
  letter-spacing: 0.2px;
}

.action-icon { font-size: 22px; }
.action-btn:hover { transform: translateY(-2px); color: var(--text); }
.alarm-btn:hover { border-color: var(--orange); box-shadow: 0 4px 20px rgba(255,107,0,0.2); }
.location-btn:hover { border-color: var(--blue); box-shadow: 0 4px 20px rgba(0,153,255,0.2); }
.call-btn:hover { border-color: var(--green); box-shadow: 0 4px 20px rgba(0,212,106,0.2); }
.sms-btn:hover { border-color: var(--yellow); box-shadow: 0 4px 20px rgba(255,214,0,0.2); }

/* ===== LOG SECTION ===== */
.log-section {
  margin: 0 16px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.clear-btn {
  background: none;
  border: none;
  color: var(--red);
  font-size: 11px;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background 0.2s;
}
.clear-btn:hover { background: var(--red-glow); }

.activity-log { max-height: 160px; overflow-y: auto; scrollbar-width: none; }
.activity-log::-webkit-scrollbar { display: none; }

.log-empty { padding: 16px; text-align: center; color: var(--text-muted); font-size: 12px; }

.log-item {
  display: flex;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  animation: slide-in 0.3s ease;
}
.log-item:last-child { border-bottom: none; }

@keyframes slide-in {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.log-time { color: var(--text-muted); flex-shrink: 0; font-size: 10px; font-weight: 600; }
.log-msg { color: var(--text); flex: 1; }
.log-sos .log-msg { color: var(--red); font-weight: 600; }
.log-success .log-msg { color: var(--green); }
.log-info .log-msg { color: var(--blue); }
.log-warn .log-msg { color: var(--yellow); }

/* ===== PAGE HEADER ===== */
.page-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px 8px;
  flex-shrink: 0;
}

.page-header h2 {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 2px;
  color: var(--text);
}

.back-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}
.back-btn:hover { border-color: var(--red); color: var(--red); }

/* ===== ADD CONTACT FORM ===== */
.add-contact-form {
  margin: 0 16px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.add-contact-form h3 {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.form-row { margin-bottom: 12px; }

.form-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus { border-color: var(--red); }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
}
.checkbox-label input { accent-color: var(--red); width: 16px; height: 16px; }

.add-contact-btn {
  width: 100%;
  background: var(--red);
  border: none;
  border-radius: 10px;
  padding: 13px;
  color: white;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.5px;
  transition: all 0.2s;
  margin-top: 4px;
}
.add-contact-btn:hover { background: #ff3344; box-shadow: 0 4px 20px var(--red-glow); }
.add-contact-btn:active { transform: scale(0.98); }

/* ===== CONTACTS LIST ===== */
.contacts-list-wrap { margin: 0 16px 16px; }
.contacts-list-wrap h3 {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.contacts-list { display: flex; flex-direction: column; gap: 8px; }

.empty-state {
  background: var(--surface2);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 30px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}

.contact-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slide-in 0.3s ease;
  transition: border-color 0.2s;
}
.contact-card:hover { border-color: rgba(255,255,255,0.12); }
.contact-card.primary { border-left: 3px solid var(--red); }

.contact-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--red-glow);
  border: 1px solid var(--red);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-info { flex: 1; min-width: 0; }
.contact-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.primary-badge {
  font-size: 9px;
  background: var(--red);
  color: white;
  padding: 1px 6px;
  border-radius: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.contact-phone { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.contact-actions { display: flex; gap: 6px; }
.contact-action {
  background: var(--bg);
  border: 1px solid var(--border);
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}
.contact-action:hover { border-color: var(--red); transform: scale(1.1); }

/* ===== SETTINGS ===== */
.settings-group {
  margin: 0 16px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.settings-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.settings-textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  outline: none;
  resize: vertical;
  transition: border-color 0.2s;
  line-height: 1.5;
}
.settings-textarea:focus { border-color: var(--red); }

.settings-hint { font-size: 11px; color: var(--text-muted); margin-top: 6px; }

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}
.toggle-row:last-child { border-bottom: none; padding-bottom: 0; }

.toggle { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  inset: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  transition: 0.3s;
}
.slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 2px; top: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: 0.3s;
}
.toggle input:checked + .slider { background: var(--red); border-color: var(--red); }
.toggle input:checked + .slider::before { transform: translateX(20px); background: white; }

.test-btn {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.3px;
}
.test-btn:hover { border-color: var(--blue); color: var(--blue); box-shadow: 0 4px 20px rgba(0,153,255,0.15); }

.danger-zone { border-color: rgba(255,34,51,0.2); }
.danger-btn {
  width: 100%;
  background: var(--bg);
  border: 1px solid rgba(255,34,51,0.3);
  border-radius: 10px;
  padding: 13px;
  color: var(--red);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.danger-btn:hover { background: var(--red-glow); }

/* ===== BOTTOM NAV ===== */
.bottom-nav {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 64px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 20;
}

.nav-btn {
  flex: 1;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s;
  letter-spacing: 0.3px;
}
.nav-btn .nav-icon { font-size: 20px; }
.nav-btn.active { color: var(--red); }
.nav-btn:hover { color: var(--text); }

/* ===== ALARM OVERLAY ===== */
#alarmOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: overlay-in 0.3s ease;
}
#alarmOverlay.hidden { display: none; }

@keyframes overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.alarm-pulse {
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,34,51,0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: alarm-throb 0.5s ease-in-out infinite alternate;
}
@keyframes alarm-throb {
  from { transform: scale(0.8); opacity: 0.5; }
  to { transform: scale(1.3); opacity: 1; }
}

.alarm-content {
  position: relative;
  text-align: center;
  z-index: 2;
}

.alarm-icon { font-size: 72px; animation: alarm-throb 0.5s ease-in-out infinite alternate; }

.alarm-content h2 {
  font-family: var(--font-display);
  font-size: 52px;
  color: var(--red);
  letter-spacing: 6px;
  margin: 10px 0 6px;
  text-shadow: 0 0 30px var(--red);
}

.alarm-content p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 30px;
}

#stopAlarmBtn {
  background: white;
  border: none;
  border-radius: 16px;
  padding: 16px 48px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 3px;
  color: var(--red);
  cursor: pointer;
  transition: all 0.2s;
}
#stopAlarmBtn:hover { transform: scale(1.05); box-shadow: 0 8px 40px rgba(255,34,51,0.4); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  max-width: 340px;
  text-align: center;
  z-index: 999;
  box-shadow: var(--shadow);
  animation: toast-up 0.3s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.hidden { display: none; }
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error { border-color: var(--red); color: var(--red); }
.toast.info { border-color: var(--blue); color: var(--blue); }

@keyframes toast-up {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== LOW BATTERY MODE ===== */
body.low-battery .sos-ring { display: none; }
body.low-battery .logo-dot { animation: none; }
body.low-battery body::before { display: none; }
body.low-battery .info-cards .info-card:last-child { display: none; }

/* ===== UTILITY ===== */
.hidden { display: none !important; }

/* Scrollable pages */
#page-contacts, #page-settings { padding-top: 4px; }

/* SOS ACTIVE animation */
@keyframes sos-flash {
  0%, 100% { background: var(--surface); }
  50% { background: rgba(255,34,51,0.04); }
}
body.sos-active #app { animation: sos-flash 0.5s ease infinite; }