/* =========================================================
   NORTHGATE — AUTHENTICATION PAGE STYLES
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --color-primary: #0F2744;
  --color-primary-light: #1B3A63;
  --color-accent: #16A34A;
  --color-accent-dark: #128a3e;
  --color-bg: #F8FAFC;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  --color-text: #1E293B;
  --color-text-muted: #64748B;
  --color-error: #DC2626;

  /* --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px; */

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;

  --shadow-sm: 0 1px 3px rgba(15, 39, 68, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 39, 68, 0.08);
  --shadow-lg: 0 20px 45px rgba(15, 39, 68, 0.12);

  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;

  --nav-height: 76px;
}


/* ---------- Reset ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, button {
  font-family: inherit;
  font-size: 1rem;
}

/* ---------- Buttons ---------- */
/* .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
} */

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

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 6px 18px rgba(22, 163, 74, 0.28);
}

.btn--accent:hover {
  background-color: var(--color-accent-dark);
  box-shadow: 0 8px 22px rgba(22, 163, 74, 0.35);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  padding: 0.6rem 1.25rem;
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* =========================================================
   NAVBAR
   ========================================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  height: var(--nav-height);
}

.navbar__container {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.navbar__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.1rem;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.navbar__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.navbar__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.navbar__links a:hover {
  color: var(--color-primary);
}

.navbar__links a:hover::after {
  width: 100%;
}

.navbar__back-btn {
  flex-shrink: 0;
  background-color: var(--color-primary) !important;
  color: var(--color-white) !important;
  border: 1.5px solid var(--color-primary);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}

.navbar__toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.navbar__toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--color-bg) 100%);
  padding: 3.5rem 24px 3.5rem;
  text-align: center;
}

.hero__container {
  max-width: 720px;
  margin: 0 auto;
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.hero__cta {
  font-size: 1rem;
  padding: 0.9rem 2rem;
}

/* =========================================================
   AUTH SECTION / CARD
   ========================================================= */
.auth-section {
  display: flex;
  justify-content: center;
  padding: 0 24px 5rem;
}

.auth-card {
  width: 100%;
  max-width: 520px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: max-width var(--transition-base);
}

.auth-card__tabs {
  display: flex;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.auth-tab {
  flex: 1;
  padding: 1.1rem 1rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  position: relative;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.auth-tab::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.auth-tab:hover {
  color: var(--color-primary);
}

.auth-tab.is-active {
  color: var(--color-primary);
  background-color: var(--color-white);
}

.auth-tab.is-active::after {
  transform: scaleX(1);
}

.auth-card__body {
  padding: 2.25rem 2rem 2.5rem;
}

/* ---------- Panels & Steps ---------- */
.auth-panel {
  display: none;
  animation: fadeSlideIn var(--transition-base);
}

.auth-panel.is-active {
  display: block;
}

.register-step {
  display: none;
  animation: fadeSlideIn var(--transition-base);
}

.register-step.is-active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-panel__header {
  margin-bottom: 1.75rem;
}

.auth-panel__header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.auth-panel__header p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* =========================================================
   FORMS
   ========================================================= */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: flex;
  align-items: center;
}

.form-row--between {
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: -0.5rem;
}

.form-row--two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748B' stroke-width='1.5' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.25rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 39, 68, 0.1);
}

.form-group input.is-invalid,
.form-group select.is-invalid {
  border-color: var(--color-error);
}

.form-group input.is-invalid:focus,
.form-group select.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-error {
  font-size: 0.8rem;
  color: var(--color-error);
  min-height: 1.2em;
  display: block;
  margin-top: 2px;
}

/* Verified Email State UI */
.input-verified-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-verified {
  background-color: #F1F5F9 !important;
  border-color: var(--color-border) !important;
  color: var(--color-text-muted) !important;
  padding-right: 6.5rem !important;
  cursor: not-allowed;
}

.badge-verified {
  position: absolute;
  right: 0.75rem;
  background-color: rgba(22, 163, 74, 0.1);
  color: var(--color-accent);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* ---------- Password field with icon ---------- */
.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon input {
  padding-right: 2.75rem;
}

.toggle-password {
  position: absolute;
  right: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.toggle-password:hover {
  color: var(--color-primary);
}

.icon-eye {
  width: 20px;
  height: 20px;
}

/* ---------- Checkbox ---------- */
.checkbox {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox__mark {
  flex-shrink: 0;
  width: 19px;
  height: 19px;
  border: 1.5px solid var(--color-border);
  border-radius: 5px;
  position: relative;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.checkbox__mark::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid var(--color-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.checkbox input:checked ~ .checkbox__mark {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.checkbox input:checked ~ .checkbox__mark::after {
  opacity: 1;
}

.checkbox input:focus-visible ~ .checkbox__mark {
  box-shadow: 0 0 0 3px rgba(15, 39, 68, 0.15);
}

.checkbox--terms {
  align-items: flex-start;
  line-height: 1.4;
}

.checkbox--terms .checkbox__mark {
  margin-top: 1px;
}

.checkbox--terms a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
}

/* ---------- Links / switches ---------- */
.link-btn {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.link-btn:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.auth-switch {
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* =========================================================
   OTP INPUTS
   ========================================================= */
.otp-group {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
}

.otp-input {
  width: 100%;
  aspect-ratio: 1 / 1;
  text-align: center;
  font-size: 1.4rem;
  font-weight: 700;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.otp-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
  transform: scale(1.04);
}

.otp-input.is-invalid {
  border-color: var(--color-error);
}

/* =========================================================
   TOAST
   ========================================================= */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 200;
  max-width: 90vw;
  text-align: center;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.toast.is-error {
  background-color: var(--color-error);
}

.toast.is-success {
  background-color: var(--color-accent);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

/* Tablet */
@media (max-width: 900px) {
  .navbar__links {
    gap: 1.25rem;
  }

  .auth-card {
    max-width: 480px;
  }
}

/* Mobile nav collapse */
@media (max-width: 1024px) {
  .navbar__toggle {
    display: flex;
  }

  .navbar__nav {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1.25rem 24px 1.5rem;
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .navbar__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .navbar__links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    width: 100%;
    margin-bottom: 1rem;
  }

  .navbar__links li {
    width: 100%;
  }

  .navbar__links a {
    display: block;
    padding: 0.75rem 0;
    width: 100%;
  }

  .navbar__links a::after {
    display: none;
  }

  .navbar__back-btn {
    width: 100%;
    text-align: center;
  }

  .hero {
    padding: 2rem 20px 2rem;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .auth-card__body {
    padding: 1.75rem 1.25rem 2rem;
  }

  .form-row--two {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .auth-tab {
    padding: 1rem 0.5rem;
    font-size: 0.88rem;
  }

  .otp-group {
    gap: 0.4rem;
  }

  .otp-input {
    font-size: 1.15rem;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .hero__subtitle {
    font-size: 0.95rem;
  }
}