/* ─── KOTO Premium Login ─────────────────────────────────────────────────── */

.login-page {
  --login-gold: #d4af37;
  --login-gold-light: #f0dfa0;
  --login-gold-dark: #9a7b1a;
  --login-ink: #0a0a0a;
  --login-ink-soft: #141414;
  --login-glass: rgba(255, 255, 255, 0.06);
  --login-glass-border: rgba(212, 175, 55, 0.22);
  --login-text-on-dark: #f5f0e6;
  --login-text-muted-on-dark: rgba(245, 240, 230, 0.55);

  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--login-ink);
  color: var(--login-text-on-dark);
  font-family: var(--font-sans);
}

.login-page__aurora {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.login-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  animation: loginOrbFloat 18s ease-in-out infinite;
}

.login-orb--1 {
  width: 55vw;
  height: 55vw;
  max-width: 620px;
  max-height: 620px;
  top: -15%;
  left: -10%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.55) 0%, transparent 70%);
}

.login-orb--2 {
  width: 40vw;
  height: 40vw;
  max-width: 480px;
  max-height: 480px;
  bottom: -10%;
  left: 25%;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.35) 0%, transparent 70%);
  animation-delay: -6s;
}

.login-orb--3 {
  width: 30vw;
  height: 30vw;
  max-width: 360px;
  max-height: 360px;
  top: 30%;
  right: -5%;
  background: radial-gradient(circle, rgba(239, 219, 168, 0.2) 0%, transparent 70%);
  animation-delay: -12s;
}

.login-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(212, 175, 55, 0.04) 45%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(212, 175, 55, 0.04) 55%,
    transparent 60%
  );
  background-size: 200% 100%;
  animation: loginShimmer 8s ease-in-out infinite;
}

.login-page__grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.login-shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

/* ─── Showcase (sol panel) ───────────────────────────────────────────────── */

.login-showcase {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 5vw, 4rem);
  background: linear-gradient(
    145deg,
    rgba(20, 20, 20, 0.92) 0%,
    rgba(10, 10, 10, 0.98) 50%,
    rgba(26, 22, 14, 0.95) 100%
  );
  border-right: 1px solid rgba(212, 175, 55, 0.12);
  overflow: hidden;
}

.login-showcase__line {
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    180deg,
    transparent,
    var(--login-gold) 30%,
    var(--login-gold-light) 50%,
    var(--login-gold) 70%,
    transparent
  );
  opacity: 0.5;
  animation: loginLinePulse 4s ease-in-out infinite;
}

.login-showcase__inner {
  max-width: 420px;
  animation: loginFadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-brand__emblem {
  width: 72px;
  height: 72px;
  margin-bottom: 1.75rem;
  animation: loginEmblemGlow 3s ease-in-out infinite;
}

.login-brand__emblem svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 20px rgba(212, 175, 55, 0.35));
}

.login-brand__eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--login-gold);
}

.login-brand__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 4.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  background: linear-gradient(
    135deg,
    var(--login-gold-light) 0%,
    var(--login-gold) 45%,
    var(--login-gold-dark) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.login-brand__tagline {
  margin: 0 0 2.5rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--login-text-muted-on-dark);
  max-width: 34ch;
}

.login-features {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.login-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: rgba(245, 240, 230, 0.75);
  animation: loginFadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-features li:nth-child(1) { animation-delay: 0.15s; }
.login-features li:nth-child(2) { animation-delay: 0.25s; }
.login-features li:nth-child(3) { animation-delay: 0.35s; }

.login-features__icon {
  color: var(--login-gold);
  font-size: 0.55rem;
}

.login-quote {
  margin: 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  animation: loginFadeUp 0.8s 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-style: italic;
  color: rgba(245, 240, 230, 0.5);
}

/* ─── Login panel (sağ) ────────────────────────────────────────────────── */

.login-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: rgba(8, 8, 8, 0.6);
  backdrop-filter: blur(2px);
}

.login-card {
  width: min(420px, 100%);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  border-radius: 24px;
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.09) 0%,
    rgba(255, 255, 255, 0.03) 100%
  );
  border: 1px solid var(--login-glass-border);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 25px 60px rgba(0, 0, 0, 0.45),
    0 0 80px rgba(212, 175, 55, 0.06);
  backdrop-filter: blur(24px);
  animation: loginCardIn 1s 0.2s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-card__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--login-gold);
}

.login-card__title {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--login-text-on-dark);
}

.login-card__subtitle {
  margin: 0 0 1.75rem;
  font-size: 0.9rem;
  color: var(--login-text-muted-on-dark);
}

.login-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  border-radius: 12px;
  font-size: 0.875rem;
  animation: loginShake 0.5s ease;
}

.login-alert--error {
  background: rgba(180, 35, 24, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.25);
  color: #fca5a5;
}

.login-alert__icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(248, 113, 113, 0.2);
  font-weight: 700;
  font-size: 0.75rem;
}

/* ─── Form ───────────────────────────────────────────────────────────────── */

.login-form {
  display: grid;
  gap: 1.25rem;
}

.login-field__label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(245, 240, 230, 0.7);
  letter-spacing: 0.02em;
}

.login-field__control {
  position: relative;
  display: flex;
  align-items: center;
}

.login-field__icon {
  position: absolute;
  left: 1rem;
  color: rgba(212, 175, 55, 0.5);
  pointer-events: none;
  transition: color 0.25s ease;
}

.login-field__input {
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 2.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--login-text-on-dark);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  outline: none;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

.login-field__input::placeholder {
  color: rgba(245, 240, 230, 0.25);
}

.login-field__input:hover {
  border-color: rgba(212, 175, 55, 0.2);
}

.login-field__input:focus {
  border-color: rgba(212, 175, 55, 0.55);
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.12);
}

.login-field__control:focus-within .login-field__icon {
  color: var(--login-gold);
}

.login-field__toggle {
  position: absolute;
  right: 0.75rem;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: rgba(245, 240, 230, 0.4);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.login-field__toggle:hover {
  color: var(--login-gold-light);
  background: rgba(212, 175, 55, 0.1);
}

.login-field__toggle .icon-eye-off[hidden],
.login-field__toggle .icon-eye[hidden] {
  display: none;
}

/* ─── Submit button ──────────────────────────────────────────────────────── */

.login-submit {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
  padding: 1rem 1.5rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--login-ink);
  background: linear-gradient(
    135deg,
    var(--login-gold-light) 0%,
    var(--login-gold) 50%,
    var(--login-gold-dark) 100%
  );
  border: none;
  border-radius: 14px;
  cursor: pointer;
  overflow: hidden;
  box-shadow:
    0 4px 20px rgba(212, 175, 55, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.15) inset;
  transition:
    transform 0.2s ease,
    box-shadow 0.25s ease;
}

.login-submit:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 32px rgba(212, 175, 55, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.2) inset;
}

.login-submit:active {
  transform: translateY(0);
}

.login-submit__shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 35%,
    rgba(255, 255, 255, 0.35) 50%,
    transparent 65%
  );
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.login-submit:hover .login-submit__shine {
  transform: translateX(120%);
}

.login-submit__arrow {
  transition: transform 0.25s ease;
}

.login-submit:hover .login-submit__arrow {
  transform: translateX(4px);
}

.login-submit.is-loading {
  pointer-events: none;
  opacity: 0.85;
}

.login-submit.is-loading .login-submit__text::after {
  content: '…';
  animation: loginDots 1.2s steps(4, end) infinite;
}

.login-card__footer {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.login-card__footer p {
  margin: 0;
  font-size: 0.75rem;
  color: rgba(245, 240, 230, 0.35);
  letter-spacing: 0.06em;
}

.login-page__credit {
  margin: 1.5rem 0 0;
  font-size: 0.75rem;
  color: rgba(245, 240, 230, 0.25);
}

/* ─── Animations ─────────────────────────────────────────────────────────── */

@keyframes loginOrbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(3%, -4%) scale(1.05); }
  66% { transform: translate(-2%, 3%) scale(0.97); }
}

@keyframes loginShimmer {
  0%, 100% { background-position: 200% 0; }
  50% { background-position: -200% 0; }
}

@keyframes loginLinePulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.75; }
}

@keyframes loginEmblemGlow {
  0%, 100% { filter: drop-shadow(0 0 16px rgba(212, 175, 55, 0.3)); }
  50% { filter: drop-shadow(0 0 28px rgba(212, 175, 55, 0.55)); }
}

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

@keyframes loginCardIn {
  from {
    opacity: 0;
    transform: translateY(32px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes loginShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

@keyframes loginDots {
  0% { content: ''; }
  25% { content: '.'; }
  50% { content: '..'; }
  75% { content: '...'; }
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .login-shell {
    grid-template-columns: 1fr;
  }

  .login-showcase {
    display: none;
  }

  .login-panel {
    min-height: 100vh;
    background: transparent;
  }

  .login-card {
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.04) inset,
      0 20px 50px rgba(0, 0, 0, 0.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-orb,
  .login-shimmer,
  .login-showcase__line,
  .login-brand__emblem,
  .login-showcase__inner,
  .login-features li,
  .login-quote,
  .login-card {
    animation: none;
  }

  .login-submit__shine {
    display: none;
  }
}