:root {
  --bg: #07090f;
  --bg2: #0b0e18;
  --surface: #111828;
  --surface2: #172035;
  --border: rgba(255,255,255,0.06);
  --border2: rgba(255,255,255,0.11);
  --border-focus: rgba(37,99,235,0.5);
  --accent: #2563eb;
  --accent2: #3b82f6;
  --accent3: #60a5fa;
  --accent-dim: rgba(37,99,235,0.12);
  --text: #eef2ff;
  --text2: #8896b3;
  --text3: #4a5578;
  --error: #f87171;
  --success: #22c55e;
  --font-head: 'Bebas Neue', sans-serif;
  --font-body: 'Montserrat', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.auth-bg { position: fixed; inset: 0; z-index: 0; }
.auth-bg-img {
  position: absolute;
  inset: 0;
  background: url('https://i.playground.ru/i/pix/1313074/image.jpg') center center / cover no-repeat;
  filter: brightness(0.15) saturate(0.3);
}
.auth-bg-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, rgba(37,99,235,0.06) 0%, transparent 70%);
}
.auth-noise {
  position: absolute;
  inset: 0;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
}

.auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  padding: 20px;
  animation: authAppear 0.5s ease both;
}

@keyframes authAppear {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card {
  background: rgba(17,24,40,0.88);
  backdrop-filter: blur(32px);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 40px 36px;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.03) inset;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  text-decoration: none;
  color: var(--text);
}
.auth-logo-text { font-family: var(--font-head); font-size: 1.5rem; letter-spacing: 0.06em; }

.auth-title { font-family: var(--font-head); font-size: 2rem; letter-spacing: 0.04em; text-align: center; margin-bottom: 6px; }
.auth-subtitle { text-align: center; font-size: 0.82rem; color: var(--text2); margin-bottom: 32px; line-height: 1.5; }

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text3); margin-bottom: 7px; }
.form-input-wrap { position: relative; }
.form-input-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text3); pointer-events: none; transition: color var(--transition); }
.form-input {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 12px 14px 12px 42px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.form-input:focus { border-color: var(--border-focus); background: rgba(255,255,255,0.06); }
.form-input-wrap:focus-within .form-input-icon { color: var(--accent3); }
.form-input::placeholder { color: var(--text3); }
.form-input.error { border-color: var(--error); }
.form-input.success { border-color: var(--success); }

.toggle-pw { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--text3); cursor: pointer; padding: 4px; transition: color var(--transition); }
.toggle-pw:hover { color: var(--text2); }

.field-error { font-size: 0.75rem; color: var(--error); margin-top: 5px; display: none; }
.field-error.visible { display: block; }

.strength-bar { display: flex; gap: 4px; margin-top: 8px; }
.strength-seg { height: 3px; flex: 1; border-radius: 2px; background: var(--border2); transition: background 0.3s ease; }
.strength-seg.weak { background: var(--error); }
.strength-seg.medium { background: #f59e0b; }
.strength-seg.strong { background: var(--success); }
.strength-label { font-size: 0.72rem; color: var(--text3); margin-top: 4px; text-align: right; }

.submit-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius);
  border: none;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  margin-top: 8px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(37,99,235,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}
.submit-btn:hover:not(:disabled) { background: var(--accent2); transform: translateY(-1px); box-shadow: 0 8px 28px rgba(59,130,246,0.45); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.submit-btn .spinner { width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; display: none; }
.submit-btn.loading .btn-text { display: none; }
.submit-btn.loading .spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

.google-btn {
  width: 100%;
  padding: 13px;
  border-radius: var(--radius);
  border: 1px solid var(--border2);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  text-decoration: none;
  margin-top: 10px;
}
.google-btn:hover { border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.07); transform: translateY(-1px); }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  font-size: 0.75rem;
  color: var(--text3);
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border2); }

.auth-alert { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 0.82rem; font-weight: 500; margin-bottom: 20px; display: none; line-height: 1.5; }
.auth-alert.error { display: block; background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.3); color: #fca5a5; }
.auth-alert.success { display: block; background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3); color: #4ade80; }

.auth-footer { text-align: center; margin-top: 24px; font-size: 0.82rem; color: var(--text2); }
.auth-footer a { color: var(--accent3); text-decoration: none; font-weight: 600; transition: color var(--transition); }
.auth-footer a:hover { color: var(--accent2); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }