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

:root {
  --navy:    #071428;
  --navy2:   #0b1f3a;
  --blue:    #1565c0;
  --skyblue: #4fc3f7;
  --gold:    #c9a84c;
  --gold2:   #f5d97a;
  --white:   #f0f4ff;
  --dim:     rgba(240,244,255,0.55);
  --error:   #ff6b6b;
}

html, body {
  height: 100%;
  background: var(--navy);
  color: var(--white);
  font-family: 'Josefin Sans', sans-serif;
  overflow: hidden;
}

#bg-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

.grid-overlay {
  position: fixed; inset: 0; z-index: 1;
  background-image:
    linear-gradient(rgba(201,168,76,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.glow-center {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(ellipse, rgba(21,101,192,0.2) 0%, transparent 70%);
  z-index: 1; pointer-events: none;
}

.particles { position: fixed; inset: 0; z-index: 2; pointer-events: none; }
.particle {
  position: absolute; border-radius: 50%;
  animation: floatUp linear infinite; opacity: 0;
}

.corner { position: fixed; width: 30px; height: 30px; z-index: 5; }
.corner.tl { top: 24px; left: 24px; border-top: 1px solid rgba(201,168,76,0.4); border-left: 1px solid rgba(201,168,76,0.4); }
.corner.tr { top: 24px; right: 24px; border-top: 1px solid rgba(201,168,76,0.4); border-right: 1px solid rgba(201,168,76,0.4); }
.corner.bl { bottom: 24px; left: 24px; border-bottom: 1px solid rgba(201,168,76,0.4); border-left: 1px solid rgba(201,168,76,0.4); }
.corner.br { bottom: 24px; right: 24px; border-bottom: 1px solid rgba(201,168,76,0.4); border-right: 1px solid rgba(201,168,76,0.4); }

.page {
  position: relative; z-index: 10;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.flip-container {
  width: 100%;
  max-width: 420px;
  perspective: 1000px;
  opacity: 0;
  animation: slideUp 0.9s cubic-bezier(.22,1,.36,1) 0.2s forwards;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.flip-container.flipped .card-inner {
  transform: rotateY(180deg);
}

.card, .card-back {
  width: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background: rgba(11, 31, 58, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 6px;
  padding: 2.8rem 2.6rem 2.4rem;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5), 0 0 60px rgba(21,101,192,0.1);
}

.card-back {
  position: absolute;
  top: 0;
  left: 0;
  transform: rotateY(180deg);
  background: rgba(11, 31, 58, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 6px;
  padding: 2.8rem 2.6rem 2.4rem;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5), 0 0 60px rgba(21,101,192,0.1);
}

.logo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.8rem;
}
.logo-wrap svg {
  width: 90px; height: 90px;
  filter: drop-shadow(0 0 16px rgba(79,195,247,0.3));
  margin-bottom: 1rem;
}

.card-ornament {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 1.4rem;
}
.orn-line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,168,76,0.5));
}
.orn-line.right {
  background: linear-gradient(90deg, rgba(201,168,76,0.5), transparent);
}
.orn-diamond {
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 8px rgba(201,168,76,0.7);
  flex-shrink: 0;
}

.card-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.7rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-align: center;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.card-title span {
  font-style: italic;
  background: linear-gradient(135deg, var(--gold2), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.card-subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--skyblue);
  text-align: center;
  margin-bottom: 2rem;
  opacity: 0.8;
}

.alert-msg {
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 3px;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin-bottom: 1.4rem;
  animation: shake 0.4s ease;
}
.alert-msg svg { flex-shrink: 0; }
.alert-error {
  background: rgba(255,107,107,0.1);
  border: 1px solid rgba(255,107,107,0.3);
  color: var(--error);
}
.alert-success {
  background: rgba(102,187,106,0.1);
  border: 1px solid rgba(102,187,106,0.3);
  color: #69f0ae;
}

.form-group {
  margin-bottom: 1.2rem;
  position: relative;
}
.form-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
  opacity: 0.85;
}
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-icon {
  position: absolute;
  left: 14px;
  color: rgba(79,195,247,0.5);
  pointer-events: none;
  transition: color 0.3s;
}
.form-input {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 3px;
  padding: 0.78rem 1rem 0.78rem 2.8rem;
  font-family: 'Josefin Sans', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--white);
  outline: none;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.form-input::placeholder { color: rgba(240,244,255,0.25); }
.form-input:focus {
  border-color: rgba(201,168,76,0.6);
  background: rgba(255,255,255,0.07);
  box-shadow: 0 0 20px rgba(201,168,76,0.08), inset 0 0 12px rgba(201,168,76,0.03);
}
.form-input:focus + .input-icon,
.input-wrap:focus-within .input-icon {
  color: var(--skyblue);
}

.captcha-box {
  animation: slideUp 0.5s ease;
}
.captcha-img-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.captcha-img {
  border-radius: 3px;
  border: 1px solid rgba(201,168,76,0.25);
  height: 60px;
  width: auto;
  background: rgba(255,255,255,0.06);
}
.captcha-refresh-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 3px;
  color: var(--skyblue);
  padding: 8px 10px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.captcha-refresh-btn:hover {
  background: rgba(201,168,76,0.15);
  color: var(--gold);
}

.pw-toggle {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: rgba(240,244,255,0.3);
  padding: 4px;
  transition: color 0.2s;
  display: flex;
}
.pw-toggle:hover { color: var(--gold); }

.form-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.6rem;
  margin-top: -0.4rem;
}
.remember {
  display: flex; align-items: center; gap: 8px;
  cursor: pointer;
}
.remember input[type="checkbox"] { display: none; }
.check-box {
  width: 14px; height: 14px;
  border: 1px solid rgba(201,168,76,0.4);
  border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.remember input:checked ~ .check-box {
  background: var(--gold);
  border-color: var(--gold);
}
.remember input:checked ~ .check-box::after {
  content: '';
  display: block;
  width: 4px; height: 7px;
  border: 1.5px solid var(--navy);
  border-top: none; border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}
.remember-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--dim);
  user-select: none;
}
.forgot-link {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--skyblue);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s, color 0.2s;
}
.forgot-link:hover { opacity: 1; color: var(--gold); }

.login-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--gold) 0%, #a07828 100%);
  border: none;
  border-radius: 3px;
  padding: 0.9rem 1.5rem;
  font-family: 'Josefin Sans', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--navy);
  font-weight: 400;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.login-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s;
}
.login-btn:hover::before { left: 100%; }
.login-btn:hover {
  opacity: 0.9;
  box-shadow: 0 8px 24px rgba(201,168,76,0.25);
  transform: translateY(-1px);
}
.login-btn:active { transform: translateY(0); opacity: 1; }
.login-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.lang-switcher {
  text-align: center;
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(201,168,76,0.15);
}
.lang-switcher a {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
  margin: 0 8px;
}
.lang-switcher a:hover,
.lang-switcher a.active {
  color: var(--gold);
}
.lang-switcher a.active {
  font-weight: 600;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes floatUp {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 0.5; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-6px); }
  40%     { transform: translateX(6px); }
  60%     { transform: translateX(-4px); }
  80%     { transform: translateX(4px); }
}

@media (max-height: 680px) {
  .card { padding: 1.8rem 2rem; }
  .logo-wrap svg { width: 70px; height: 70px; }
  .card-subtitle { margin-bottom: 1.4rem; }
}