:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-2: #0e162e;
  --ink: #f2f7ff;
  --muted: #a8b6d8;
  --card: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.18);
  --input-bg: rgba(15, 24, 48, 0.55);
  --input-border: rgba(166, 188, 255, 0.22);
  --ring: rgba(91, 168, 255, 0.42);
  --btn-1: #39a5ff;
  --btn-2: #33d5ff;
  --danger: #ff7a9a;
  --success: #59e8a9;
  --radius-card: 22px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--ink);
  background: radial-gradient(120% 120% at 15% 5%, #132449 0%, transparent 55%),
    radial-gradient(100% 90% at 85% 95%, #130f39 0%, transparent 58%),
    linear-gradient(125deg, var(--bg) 10%, var(--bg-2) 100%);
  overflow: hidden;
}

.bg-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 999px;
  filter: blur(70px);
  opacity: 0.58;
  mix-blend-mode: screen;
}

.blob-a {
  width: 420px;
  height: 420px;
  left: -130px;
  top: -140px;
  background: #2579ff;
  animation: blobA 20s ease-in-out infinite alternate;
}

.blob-b {
  width: 460px;
  height: 460px;
  right: -180px;
  top: 12%;
  background: #2be3ff;
  animation: blobB 24s ease-in-out infinite alternate;
}

.blob-c {
  width: 390px;
  height: 390px;
  left: 30%;
  bottom: -190px;
  background: #6f5dff;
  animation: blobC 18s ease-in-out infinite alternate;
}

.noise-layer {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.6) 0.55px, transparent 0.55px);
  background-size: 4px 4px;
}

.particles {
  position: absolute;
  inset: 0;
}


.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(193, 231, 255, 0.45);
  box-shadow: 0 0 10px rgba(76, 197, 255, 0.4);
  animation: particleFloat linear infinite;
}

.login-shell {
  min-height: 100vh;
  padding: 24px;
  display: grid;
  place-items: center;
  position: relative;
  z-index: 1;
}

.login-card {
  width: min(420px, 100%);
  padding: 30px 28px 24px;
  border-radius: var(--radius-card);
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(14px) saturate(135%);
  -webkit-backdrop-filter: blur(14px) saturate(135%);
  box-shadow: 0 18px 48px rgba(2, 8, 24, 0.56), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  animation: cardEnter 680ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.login-logo {
  width: 260px;
  max-width: 72%;
  height: auto;
  display: block;
  margin: 0 auto 14px;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.22));
}

h1 {
  margin: 0;
  text-align: center;
  font-size: clamp(1.4rem, 3.7vw, 1.9rem);
  letter-spacing: 0.01em;
}

.subtitle {
  margin: 10px 0 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #d7e4ff;
  font-weight: 600;
}

.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--input-border);
  border-radius: 14px;
  background: var(--input-bg);
  min-height: 48px;
  padding: 0 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.input-wrap:focus-within {
  border-color: rgba(122, 202, 255, 0.82);
  box-shadow: 0 0 0 4px var(--ring);
  transform: translateY(-1px);
}

.input-icon {
  font-size: 0.92rem;
  color: #abd2ff;
  width: 18px;
  text-align: center;
  flex: 0 0 auto;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 0.98rem;
}

input::placeholder {
  color: #95aacd;
}

.password-toggle {
  border: 0;
  padding: 0;
  margin: 0;
  color: #c8defe;
  background: transparent;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.password-toggle:hover {
  color: #ffffff;
}

.remember-row {
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
  color: #dbe8ff;
  cursor: pointer;
}

.remember-row input {
  accent-color: #4bc8ff;
}

.primary-btn {
  margin-top: 2px;
  min-height: 50px;
  border: 0;
  border-radius: 14px;
  color: #041126;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: linear-gradient(110deg, var(--btn-1), var(--btn-2));
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.22s ease, filter 0.2s ease;
  box-shadow: 0 12px 25px rgba(27, 163, 255, 0.35);
}

.primary-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 35px rgba(35, 184, 255, 0.42);
}

.primary-btn:active {
  transform: translateY(0);
}

.primary-btn:disabled {
  cursor: wait;
  filter: saturate(0.75) brightness(0.9);
  box-shadow: 0 8px 20px rgba(7, 45, 79, 0.5);
}

.btn-label {
  transition: opacity 0.16s ease;
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(4, 17, 38, 0.25);
  border-top-color: #041126;
  display: none;
  animation: spin 0.75s linear infinite;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.primary-btn.loading .btn-label {
  opacity: 0;
}

.primary-btn.loading .spinner {
  display: inline-block;
}

.login-message {
  min-height: 20px;
  margin-top: 3px;
  font-size: 0.88rem;
  color: #c6d8f7;
}

.login-message.error {
  color: var(--danger);
}

.login-message.success {
  color: var(--success);
}

.register-link-row {
  margin-top: 10px;
  text-align: center;
}

.register-link-btn {
  border: 0;
  background: transparent;
  color: #9fd0ff;
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px 6px;
}

.register-link-btn:hover {
  color: #d7ecff;
}

.register-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 8, 24, 0.52);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 20;
  padding: 16px;
}

.register-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.register-card {
  width: min(420px, 100%);
  padding: 22px 20px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px) saturate(135%);
  -webkit-backdrop-filter: blur(14px) saturate(135%);
  box-shadow: 0 18px 48px rgba(2, 8, 24, 0.56), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.register-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.register-head h2 {
  margin: 0;
  font-size: 1.15rem;
}

.register-close {
  border: 0;
  background: transparent;
  color: #d7e9ff;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 2px 4px;
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes blobA {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(110px, 80px) scale(1.18);
  }
}

@keyframes blobB {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(-120px, 70px) scale(1.14);
  }
}

@keyframes blobC {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(-70px, -80px) scale(1.2);
  }
}

@keyframes particleFloat {
  from {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  15% {
    opacity: 0.5;
  }
  85% {
    opacity: 0.35;
  }
  to {
    transform: translateY(-110vh) translateX(28px);
    opacity: 0;
  }
}

@media (max-width: 540px) {
  body {
    overflow: auto;
  }

  .login-shell {
    padding: 16px;
  }

  .login-card {
    padding: 24px 18px 20px;
    border-radius: 18px;
  }

  .blob-a,
  .blob-b,
  .blob-c {
    filter: blur(58px);
    opacity: 0.5;
  }

}