/* RoboMind Register — matches official site dark + neon green theme */

:root {
  --green: #54ff64;
  --green-2: #12ef63;
  --green-dark: #1a9e32;
  --lime: #caff5a;
  --ink: #020503;
  --black: #000000;
  --panel: #1a1a1a;
  --panel-2: #242424;
  --line: rgba(102, 255, 121, 0.18);
  --text: #f0fff0;
  --muted: rgba(200, 220, 200, 0.55);
  --input-bg: #ffffff;
  --input-text: #1a1a1a;
  --radius-pill: 999px;
  --radius-field: 1.65rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body.register-page {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  color: var(--text);
  font-family: PingFang SC, Microsoft YaHei, Arial, sans-serif;
  background: var(--black);
  overflow-x: hidden;
}

.register-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(64, 255, 98, 0.12), transparent 42%),
    radial-gradient(circle at 80% 90%, rgba(255, 200, 40, 0.04), transparent 35%),
    linear-gradient(180deg, #000 0%, #020503 100%);
}

.register-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 0%, rgba(82, 255, 100, 0.04) 45%, transparent 62%);
  animation: registerSheen 8s ease-in-out infinite;
}

@keyframes registerSheen {
  0%, 60% { transform: translateX(-120%); opacity: 0; }
  72% { opacity: 1; }
  100% { transform: translateX(120%); opacity: 0; }
}

/* ── Header ── */
.register-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 2.5rem 1fr 2.5rem;
  align-items: center;
  padding: 0.85rem 1rem 0.65rem;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(12px);
}

.register-back {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: rgba(230, 240, 230, 0.88);
  text-decoration: none;
  transition: color 0.25s ease, transform 0.25s var(--ease);
}

.register-back:active {
  transform: scale(0.92);
}

.register-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: center;
  color: rgba(220, 235, 220, 0.92);
  letter-spacing: 0.06em;
}

.register-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
}

.register-brand__icon {
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  filter: drop-shadow(0 0 1rem rgba(84, 255, 100, 0.32));
}

.register-brand__name {
  width: 7.1rem;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 0.45rem rgba(84, 255, 100, 0.22));
}

.register-brand__title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.register-header-spacer {
  width: 2.5rem;
}

/* ── Main ── */
.register-main {
  position: relative;
  z-index: 1;
  max-width: 26rem;
  margin: 0 auto;
  padding: 3.25rem 1.35rem 2.5rem;
  animation: registerFadeIn 0.7s var(--ease) both;
}

@keyframes registerFadeIn {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: none; }
}

.register-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.register-logo img {
  width: 5.6rem;
  height: 5.6rem;
  border-radius: 1.15rem;
  object-fit: cover;
  box-shadow:
    0 0 2rem rgba(84, 255, 100, 0.28),
    0 0.5rem 1.5rem rgba(0, 0, 0, 0.45);
  animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
  from { box-shadow: 0 0 1.2rem rgba(84, 255, 100, 0.2), 0 0.5rem 1.5rem rgba(0, 0, 0, 0.45); }
  to { box-shadow: 0 0 2.2rem rgba(84, 255, 100, 0.38), 0 0.5rem 1.5rem rgba(0, 0, 0, 0.45); }
}

.register-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* ── Input fields ── */
.register-field {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 3rem;
  padding: 0 1rem 0 0.25rem;
  border-radius: var(--radius-field);
  background: var(--input-bg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
  transition: box-shadow 0.28s var(--ease), transform 0.28s var(--ease);
}

.register-field:focus-within {
  box-shadow:
    0 0 0 2px rgba(84, 255, 100, 0.35),
    0 4px 16px rgba(84, 255, 100, 0.12);
  transform: translateY(-1px);
}

.register-field__icon {
  flex: 0 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(120, 130, 120, 0.85);
}

.register-field__icon svg {
  width: 1.15rem;
  height: 1.15rem;
}

.register-field input {
  flex: 1;
  min-width: 0;
  height: 3rem;
  padding: 0 0.5rem 0 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--input-text);
  font-size: 0.95rem;
  font-family: inherit;
}

.register-field input::placeholder {
  color: rgba(100, 110, 100, 0.75);
}

.register-field:not(:has(.register-field__icon)) input {
  padding-left: 1rem;
}

.register-field__toggle {
  flex: 0 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: rgba(120, 130, 120, 0.85);
  cursor: pointer;
}

.register-field__toggle svg {
  width: 1.15rem;
  height: 1.15rem;
}

.register-field__toggle .icon-eye-on {
  display: none;
}

.register-field__toggle.is-visible .icon-eye-off {
  display: none;
}

.register-field__toggle.is-visible .icon-eye-on {
  display: block;
}

/* ── Verification code row ── */
.register-code-row {
  display: flex;
  align-items: stretch;
  gap: 0.65rem;
}

.register-field--code {
  flex: 1;
  padding-left: 1rem;
}

.register-field--code input {
  padding-left: 0;
}

.register-send {
  flex: 0 0 auto;
  min-width: 4.2rem;
  padding: 0 0.85rem;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.25s ease, transform 0.2s ease;
}

.register-send:hover {
  color: var(--green);
}

.register-send:active {
  transform: scale(0.96);
}

.register-send.is-countdown {
  color: var(--muted);
  cursor: not-allowed;
}

/* ── Submit ── */
.register-submit {
  margin-top: 0.65rem;
  width: 100%;
  height: 3.15rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, #5dff6e 0%, var(--green-2) 48%, var(--green-dark) 100%);
  color: #041208;
  font-size: 1.05rem;
  font-weight: 800;
  font-family: inherit;
  letter-spacing: 0.12em;
  cursor: pointer;
  box-shadow:
    0 0 1.2rem rgba(84, 255, 100, 0.35),
    0 6px 20px rgba(0, 0, 0, 0.35);
  transition:
    transform 0.28s var(--ease),
    box-shadow 0.28s ease,
    filter 0.28s ease;
  position: relative;
  overflow: hidden;
}

.register-submit::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 255, 255, 0.35) 45%, transparent 70%);
  transform: translateX(-120%);
  animation: submitSheen 3.5s ease-in-out infinite;
}

@keyframes submitSheen {
  0%, 55% { transform: translateX(-120%); }
  78%, 100% { transform: translateX(120%); }
}

.register-submit:hover {
  filter: brightness(1.06);
  box-shadow:
    0 0 1.6rem rgba(84, 255, 100, 0.48),
    0 8px 24px rgba(0, 0, 0, 0.4);
}

.register-submit:active {
  transform: scale(0.98);
}

/* ── Footer link ── */
.register-footer {
  margin: 1.75rem 0 0;
  padding-bottom: 1.5rem;
  text-align: center;
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(200, 210, 200, 0.72);
}

.register-footer a {
  margin-left: 0.15rem;
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.register-footer a:hover {
  color: #7dff8a;
  text-shadow: 0 0 0.65rem rgba(84, 255, 100, 0.35);
}

.register-footer a:active {
  opacity: 0.85;
}

/* ── Captcha modal ── */
.captcha-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.captcha-modal[hidden] {
  display: none !important;
}

.captcha-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease both;
}

.captcha-modal__panel {
  position: relative;
  width: min(100%, 20rem);
  padding: 1.35rem 1.25rem 1.5rem;
  border-radius: 1.1rem;
  background: var(--panel);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.55);
  animation: modalIn 0.38s var(--ease) both;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.94) translateY(0.5rem); }
  to { opacity: 1; transform: none; }
}

.captcha-modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.captcha-modal__head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.captcha-modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(220, 220, 220, 0.9);
  cursor: pointer;
}

.captcha-modal__close svg {
  width: 1rem;
  height: 1rem;
}

.captcha-modal__hint {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--muted);
}

.captcha-modal__image-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.captcha-modal__image,
#captchaCanvas {
  flex: 1;
  width: 100%;
  max-width: 12.5rem;
  height: auto;
  border-radius: 0.45rem;
  background: #0a1a0e;
  border: 1px solid rgba(84, 255, 100, 0.2);
  object-fit: contain;
}

.register-field input.is-prefilled,
.register-field input[readonly] {
  opacity: 0.92;
}

.captcha-modal__refresh {
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
}

.captcha-modal__refresh:hover {
  color: var(--green);
}

.register-field--dark {
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: none;
  padding-left: 1rem;
  margin-bottom: 1rem;
}

.register-field--dark input {
  color: #eee;
}

.register-field--dark input::placeholder {
  color: rgba(180, 180, 180, 0.45);
}

.captcha-modal__confirm {
  width: 100%;
  height: 2.85rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, #5dff6e 0%, var(--green-2) 100%);
  color: #041208;
  font-size: 1rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 0 1rem rgba(84, 255, 100, 0.3);
  transition: transform 0.25s var(--ease), filter 0.25s ease;
}

.captcha-modal__confirm:active {
  transform: scale(0.98);
}

/* ── Alert modal ── */
.alert-modal {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.alert-modal[hidden] {
  display: none !important;
}

.alert-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(6px);
  animation: fadeIn 0.28s ease both;
}

.alert-modal__panel {
  position: relative;
  width: min(100%, 19.5rem);
  padding: 1.75rem 1.35rem 1.45rem;
  border-radius: 1.15rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(165deg, rgba(36, 36, 36, 0.98) 0%, rgba(18, 24, 18, 0.98) 100%);
  box-shadow:
    0 1.25rem 3rem rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(84, 255, 100, 0.06) inset;
  text-align: center;
  animation: modalIn 0.38s var(--ease) both;
  overflow: hidden;
}

.alert-modal__glow {
  position: absolute;
  top: -3.5rem;
  left: 50%;
  width: 10rem;
  height: 10rem;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(84, 255, 100, 0.18), transparent 68%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.alert-modal.is-success .alert-modal__glow {
  opacity: 1;
  background: radial-gradient(circle, rgba(84, 255, 100, 0.22), transparent 68%);
}

.alert-modal.is-error .alert-modal__glow {
  opacity: 1;
  background: radial-gradient(circle, rgba(255, 96, 96, 0.18), transparent 68%);
}

.alert-modal.is-warning .alert-modal__glow {
  opacity: 1;
  background: radial-gradient(circle, rgba(255, 196, 64, 0.16), transparent 68%);
}

.alert-modal.is-info .alert-modal__glow {
  opacity: 1;
  background: radial-gradient(circle, rgba(84, 200, 255, 0.14), transparent 68%);
}

.alert-modal__icon-wrap {
  position: relative;
  z-index: 1;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.alert-modal__icon {
  width: 2.15rem;
  height: 2.15rem;
  display: none;
}

.alert-modal.is-success .alert-modal__icon--success,
.alert-modal.is-error .alert-modal__icon--error,
.alert-modal.is-info .alert-modal__icon--info,
.alert-modal.is-warning .alert-modal__icon--warning {
  display: block;
}

.alert-modal.is-success .alert-modal__icon-wrap {
  color: var(--green);
  border-color: rgba(84, 255, 100, 0.28);
  box-shadow: 0 0 1.2rem rgba(84, 255, 100, 0.18);
}

.alert-modal.is-error .alert-modal__icon-wrap {
  color: #ff7070;
  border-color: rgba(255, 112, 112, 0.28);
  box-shadow: 0 0 1.2rem rgba(255, 96, 96, 0.15);
}

.alert-modal.is-info .alert-modal__icon-wrap {
  color: #6ec8ff;
  border-color: rgba(110, 200, 255, 0.24);
  box-shadow: 0 0 1.2rem rgba(110, 200, 255, 0.12);
}

.alert-modal.is-warning .alert-modal__icon-wrap {
  color: #ffc640;
  border-color: rgba(255, 198, 64, 0.26);
  box-shadow: 0 0 1.2rem rgba(255, 198, 64, 0.14);
}

.alert-modal__title {
  position: relative;
  z-index: 1;
  margin: 0 0 0.55rem;
  font-size: 1.12rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}

.alert-modal__message {
  position: relative;
  z-index: 1;
  margin: 0 0 1.35rem;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--muted);
  word-break: break-word;
}

.alert-modal__btn {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0.82rem 1rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--green-2), var(--green-dark));
  color: #041006;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 0 1rem rgba(84, 255, 100, 0.28);
  transition: transform 0.22s var(--ease), filter 0.22s ease, box-shadow 0.22s ease;
}

.alert-modal__btn:hover {
  filter: brightness(1.05);
  box-shadow: 0 0 1.25rem rgba(84, 255, 100, 0.38);
}

.alert-modal__btn:active {
  transform: scale(0.98);
}

.alert-modal.is-error .alert-modal__btn {
  background: linear-gradient(135deg, #ff8a8a, #e04f4f);
  color: #fff;
  box-shadow: 0 0 1rem rgba(255, 96, 96, 0.22);
}

/* ── Desktop ── */
@media (min-width: 769px) {
  .register-main {
    max-width: 28rem;
    padding-top: 3.75rem;
  }

  .register-logo img {
    width: 6.2rem;
    height: 6.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .register-ambient::after,
  .register-logo img,
  .register-submit::after,
  .register-main {
    animation: none !important;
  }
}