/* ─── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy:       #0d1b3e;
  --blue:       #1a6fc4;
  --blue-light: #2e8de8;
  --white:      #ffffff;
  --card-bg:    #ffffff;
  --card-bdr:   #e2e8f0;
  --input-bg:   #f8fafc;
  --input-bdr:  #cbd5e1;
  --text-main:  #0f172a;
  --text-label: #475569;
  --text-muted: #94a3b8;
  --error:      #d72638;
  --radius:     12px;
  --transition: 0.25s ease;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #f1f5f9;
  min-height: 100vh;
}

/* ─── Background ───────────────────────────────────────── */
.login-bg {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: #f1f5f9;
}

.login-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

/* ─── Footer ───────────────────────────────────────────── */
.login-footer {
  padding: 16px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

/* ─── Card ─────────────────────────────────────────────── */
.login-card {
  background: var(--card-bg);
  border: 1px solid var(--card-bdr);
  border-radius: 20px;
  padding: 48px 44px 44px;
  width: 100%;
  max-width: 420px;
  box-shadow:
    0 4px 24px rgba(15, 23, 42, 0.08),
    0 1px 6px  rgba(15, 23, 42, 0.05);
  animation: card-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

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

/* ─── Logo & Title ─────────────────────────────────────── */
.login-logo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 36px;
}

.login-logo {
  width: 180px;
  height: auto;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.02em;
  margin-top: 12px;
}

/* ─── Form ─────────────────────────────────────────────── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ─── Input Wrapper ────────────────────────────────────── */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  display: flex;
  align-items: center;
  pointer-events: none;
  color: var(--text-muted);
  transition: color var(--transition);
}

.input-icon svg { width: 17px; height: 17px; }

.form-input {
  width: 100%;
  padding: 13px 44px 13px 42px;
  border: 1.8px solid var(--input-bdr);
  border-radius: var(--radius);
  font-size: 0.95rem;
  color: var(--text-main);
  background: var(--input-bg);
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background var(--transition);
}

.form-input::placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-input:focus {
  border-color: var(--blue);
  box-shadow:
    0 0 0 4px rgba(26, 111, 196, 0.12),
    0 2px 8px rgba(26, 111, 196, 0.08);
}

.input-wrap:focus-within .input-icon { color: var(--blue); }

.form-input.is-error {
  border-color: var(--error);
  box-shadow: 0 0 0 4px rgba(215, 38, 56, 0.1);
}

/* ─── Password Toggle ──────────────────────────────────── */
.toggle-password {
  position: absolute;
  right: 13px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color var(--transition);
}

.toggle-password:hover { color: var(--blue); }
.toggle-password svg   { width: 18px; height: 18px; }

/* ─── Field Error ──────────────────────────────────────── */
.field-error {
  font-size: 0.78rem;
  color: var(--error);
  min-height: 16px;
  padding-left: 2px;
}

/* ─── Form Alert ───────────────────────────────────────── */
.form-alert {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  text-align: center;
  animation: alert-in 0.2s ease both;
}

@keyframes alert-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.form-alert.alert-error {
  display: block;
  background: #fff0f1;
  color: var(--error);
  border: 1.5px solid rgba(215, 38, 56, 0.25);
}

.form-alert.alert-success {
  display: block;
  background: #efffef;
  color: #16a34a;
  border: 1.5px solid rgba(22, 163, 74, 0.25);
}

/* ─── Submit Button ────────────────────────────────────── */
.btn-login {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px;
  margin-top: 4px;
  border: none;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue) 0%, #1558a0 100%);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition:
    background var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    opacity var(--transition);
  box-shadow: 0 4px 16px rgba(26, 111, 196, 0.35);
  overflow: hidden;
}

.btn-login::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.07) 0%, transparent 60%);
  pointer-events: none;
}

.btn-login:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--blue) 100%);
  box-shadow: 0 6px 24px rgba(26, 111, 196, 0.45);
  transform: translateY(-1px);
}

.btn-login:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(26, 111, 196, 0.3);
}

.btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ─── Spinner ──────────────────────────────────────────── */
.btn-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn-spinner.active { display: inline-block; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 480px) {
  .login-card { padding: 36px 24px 32px; }
  .login-logo { width: 150px; }
}