/* ══════════════════════════════════════════════════════════════
   FTTH PPPoE Monitor — Login Page CSS (Ultra-Premium Glassmorphism)
   ══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-base:      #040711;
  --bg-glass:     rgba(10, 18, 36, 0.45);
  --bg-input:     rgba(7, 12, 26, 0.6);
  --teal:         #00f0b5;
  --teal-dim:     rgba(0, 240, 181, 0.1);
  --blue:         #3b99ff;
  --blue-dim:     rgba(59, 153, 255, 0.1);
  --t1:           #f1f5f9;
  --t2:           #94a3b8;
  --t3:           #475569;
  --b1:           rgba(255, 255, 255, 0.06);
  --b2:           rgba(255, 255, 255, 0.1);
  --red:          #ff4a4a;
  --red-dim:      rgba(255, 74, 74, 0.12);
  --glow-teal:    0 0 30px rgba(0, 240, 181, 0.25);
  --glow-blue:    0 0 30px rgba(59, 153, 255, 0.25);
}

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

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-base);
  color: var(--t1);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

/* Dynamic background gradients */
body::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -20%;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle, rgba(0, 240, 181, 0.08) 0%, transparent 60%);
  z-index: 0;
  animation: floatGlow 12s infinite alternate ease-in-out;
}

body::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -20%;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle, rgba(59, 153, 255, 0.08) 0%, transparent 60%);
  z-index: 0;
  animation: floatGlow 12s infinite alternate-reverse ease-in-out 3s;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(10%, 10%) scale(1.2); }
}

.login-wrapper {
  width: 100%;
  max-width: 440px;
  padding: 24px;
  z-index: 10;
}

.login-box {
  background: var(--bg-glass);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid var(--b1);
  border-radius: 24px;
  padding: 48px 40px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  position: relative;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.login-box:hover {
  border-color: rgba(0, 240, 181, 0.2);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 240, 181, 0.03);
}

.logo-area {
  text-align: center;
  margin-bottom: 36px;
}

.logo-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  filter: drop-shadow(0 4px 12px rgba(0, 240, 181, 0.2));
}

.logo-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.8px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-sub {
  font-size: 14px;
  color: var(--t2);
  margin-top: 6px;
  font-weight: 350;
  letter-spacing: 0.3px;
}

.input-group {
  margin-bottom: 24px;
}

.input-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--t2);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.input-group input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-input);
  border: 1px solid var(--b1);
  border-radius: 12px;
  color: var(--t1);
  font-size: 14.5px;
  outline: none;
  font-family: 'Outfit', sans-serif;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.input-group input::placeholder {
  color: var(--t3);
  font-weight: 300;
}

.input-group input:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px var(--teal-dim), inset 0 1px 2px rgba(0, 0, 0, 0.2);
  background: rgba(7, 12, 26, 0.8);
}

.btn-login {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--blue) 100%);
  border: none;
  border-radius: 12px;
  color: #040711;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 15px rgba(0, 240, 181, 0.2);
}

.btn-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 240, 181, 0.3), var(--glow-teal);
}

.btn-login:active {
  transform: translateY(1px);
}

.btn-login:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.alert {
  padding: 14px 18px;
  border-radius: 12px;
  font-size: 13.5px;
  margin-bottom: 24px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.4;
  animation: shake 0.4s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.alert-error {
  background: var(--red-dim);
  border: 1px solid rgba(255, 74, 74, 0.15);
  color: #fecaca;
}

.hidden {
  display: none !important;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(4, 7, 17, 0.2);
  border-top-color: #040711;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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