/* ===== THEME VARIABLES — меняй здесь ===== */
:root {
  --color-bg:           #0b0f1a;      /* фон страницы             */
  --color-card-bg:      rgba(15, 23, 42, 0.75); /* фон карточки   */
  --color-card-border:  rgba(99, 179, 237, 0.12);
  --color-text:         #e2e8f0;      /* основной текст           */
  --color-text-muted:   #94a3b8;      /* второстепенный текст     */
  --color-text-faint:   #64748b;      /* подсказки, плейсхолдер  */
  --color-input-bg:     rgba(255,255,255,0.04);
  --color-input-border: rgba(255,255,255,0.08);
  --color-accent-1:     #2563eb;      /* левый цвет градиента     */
  --color-accent-2:     #7c3aed;      /* правый цвет градиента    */
  --color-glow-1:       #3b82f6;      /* свечение 1 (левый верх)  */
  --color-glow-2:       #8b5cf6;      /* свечение 2 (правый низ)  */
}

/* ===== LIGHT THEME ===== */
[data-theme="light"] {
  --color-bg:           #f0f4f8;
  --color-card-bg:      rgba(255, 255, 255, 0.85);
  --color-card-border:  rgba(37, 99, 235, 0.15);
  --color-text:         #1e293b;
  --color-text-muted:   #475569;
  --color-text-faint:   #94a3b8;
  --color-input-bg:     rgba(0,0,0,0.04);
  --color-input-border: rgba(0,0,0,0.12);
  --color-glow-1:       #93c5fd;
  --color-glow-2:       #c4b5fd;
}

[data-theme="light"] .login-bg__grid {
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px);
}

/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== ANIMATED BACKGROUND ===== */
.login-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.login-bg__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 179, 237, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 179, 237, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: gridDrift 30s linear infinite;
}

@keyframes gridDrift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(48px, 48px); }
}

.login-bg__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  animation: glowPulse 8s ease-in-out infinite alternate;
}

.login-bg__glow--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-glow-1), transparent 70%);
  top: -150px;
  left: -150px;
  animation-delay: 0s;
}

.login-bg__glow--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-glow-2), transparent 70%);
  bottom: -100px;
  right: -100px;
  animation-delay: 4s;
}

@keyframes glowPulse {
  0%   { opacity: 0.12; transform: scale(1); }
  100% { opacity: 0.25; transform: scale(1.15); }
}

/* ===== LAYOUT ===== */
.login-wrap {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
}

/* ===== CARD ===== */
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 1.25rem;
  padding: 2.5rem 2rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 32px 64px rgba(0,0,0,0.5),
    0 0 80px rgba(59,130,246,0.08);
  animation: cardIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

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

/* ===== HEADER ===== */
.login-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--color-accent-1), var(--color-accent-2));
  box-shadow: 0 8px 24px rgba(37,99,235,0.4);
  font-size: 1.75rem;
  color: #fff;
}

.login-card__org {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.login-card__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
  letter-spacing: -0.02em;
}

.login-card__subtitle {
  font-size: 0.85rem;
  color: var(--color-text-faint);
  margin-bottom: 0;
}

/* ===== ALERT ===== */
.login-alert {
  font-size: 0.875rem;
  border-radius: 0.75rem;
  border: none;
  margin-bottom: 1.25rem;
}

.alert-danger.login-alert {
  background: rgba(239,68,68,0.15);
  color: #fca5a5;
}

.alert-warning.login-alert {
  background: rgba(245,158,11,0.15);
  color: #fcd34d;
}

/* ===== FIELDS ===== */
.login-field__label {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.login-field__input {
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: 0.625rem;
  color: var(--color-text);
  font-size: 0.9rem;
  padding: 0.65rem 0.875rem;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.login-field__input::placeholder { color: var(--color-text-faint); }

.login-field__input:focus {
  background: rgba(255,255,255,0.07);
  border-color: var(--color-accent-1);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
  color: var(--color-text);
  outline: none;
}

.login-field__input.is-invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.2);
}

/* password toggle button */
.login-field__toggle {
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-left: none;
  border-radius: 0 0.625rem 0.625rem 0;
  color: var(--color-text-faint);
  padding: 0 0.875rem;
  transition: color 0.2s, background 0.2s;
}

.login-field__toggle:hover { background: rgba(255,255,255,0.08); color: var(--color-text-muted); }
.login-field__toggle:focus { box-shadow: none; outline: none; }

/* keep consistent border when input is focused */
.input-group:focus-within .login-field__toggle {
  border-color: var(--color-accent-1);
}

/* ===== SUBMIT BUTTON ===== */
.login-btn {
  background: linear-gradient(135deg, var(--color-accent-1) 0%, var(--color-accent-2) 100%);
  border: none;
  border-radius: 0.625rem;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(37,99,235,0.35);
  position: relative;
  overflow: hidden;
}

.login-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.login-btn:hover { opacity: 0.92; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(37,99,235,0.45); }
.login-btn:hover::after { opacity: 1; }
.login-btn:active { transform: translateY(0); }

.login-btn__icon { font-size: 1.25rem; transition: transform 0.2s; }
.login-btn:hover .login-btn__icon { transform: translateX(3px); }

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 100;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-card-border);
  background: var(--color-card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, transform 0.3s, box-shadow 0.2s;
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.theme-toggle:hover {
  color: var(--color-text);
  transform: rotate(20deg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
  .login-card {
    padding: 2rem 1.25rem;
    border-radius: 1rem;
  }
  .login-card__title { font-size: 1.5rem; }
}