:root {
  --bg: #090d16;
  --card-bg: rgba(21, 29, 46, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font);
  background: radial-gradient(circle at 50% 10%, #1e293b 0%, #090d16 100%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 24px 16px;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: auto 0;
}

header {
  text-align: center;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #60a5fa;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.brand-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

p.subtitle {
  color: var(--text-muted);
  font-size: 13px;
}

.main-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.main-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.pin-display-wrapper {
  margin: 12px 0;
  width: 100%;
}

.pin-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-weight: 600;
}

.pin-code-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  background: rgba(10, 15, 26, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pin-code-container:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 0 25px var(--accent-glow);
}

.pin-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 38px;
  font-weight: 800;
  letter-spacing: 8px;
  color: #ffffff;
  user-select: all;
}

.pin-expired {
  color: #64748b;
  text-decoration: line-through;
}

.countdown-section {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

.timer-circle {
  position: relative;
  width: 54px;
  height: 54px;
}

.timer-circle svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.timer-circle circle {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
}

.timer-circle .bg-circle {
  stroke: rgba(255, 255, 255, 0.08);
}

.timer-circle .progress-circle {
  stroke: var(--accent);
  stroke-dasharray: 157;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke 0.3s ease;
}

.timer-seconds {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  font-weight: 700;
  font-family: ui-monospace, monospace;
}

.timer-info {
  text-align: left;
}

.timer-info .title {
  font-size: 14px;
  font-weight: 600;
}

.timer-info .desc {
  font-size: 12px;
  color: var(--text-muted);
}

.device-badge-card {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  font-size: 13px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.info-label {
  color: var(--text-muted);
}

.info-val {
  font-weight: 600;
  color: #e2e8f0;
}

.key-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-green);
  font-weight: 600;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  width: 100%;
  padding: 10px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

/* Kayıt / Eşleştirme Formu */
.auth-form-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(10, 15, 26, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.form-hint {
  font-size: 11px;
  color: #64748b;
}

.toast {
  position: fixed;
  bottom: 24px;
  background: #1e293b;
  color: #fff;
  padding: 12px 20px;
  border-radius: 30px;
  font-size: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.live-alert {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
  font-size: 13px;
  display: none;
  animation: fadeIn 0.3s ease;
  margin-bottom: 12px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

footer {
  text-align: center;
  font-size: 12px;
  color: #475569;
  padding: 12px 0;
}