/* ============================================================
   WA Assistant — Auth (Login)
   Desktop-first. Vanilla CSS only.
   ============================================================ */

/* 01 · Tokens ------------------------------------------------ */
:root {
  --navy-900: #05132e;
  --navy-800: #071b3d;
  --navy-700: #0a2450;
  --navy-600: #0d2f66;

  --blue-500: #1f6fea;
  --blue-400: #2f8bff;
  --cyan-400: #26c6f4;
  --teal-400: #2bd4a4;
  --green-500: #22c55e;

  --card-bg: #f7f9fc;
  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-500: #64748b;
  --ink-400: #94a3b8;
  --line: #e2e8f0;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;

  --ease: cubic-bezier(.4, 0, .2, 1);
  --t-fast: .18s var(--ease);
  --t: .28s var(--ease);

  --shadow-card: 0 40px 90px -20px rgba(2, 10, 30, .55), 0 12px 32px rgba(2, 10, 30, .28);
  --shadow-btn: 0 10px 28px rgba(31, 111, 234, .42);
  --shadow-btn-hover: 0 16px 38px rgba(31, 111, 234, .55);
}

/* 02 · Reset & base ------------------------------------------ */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #fff;
  background: var(--navy-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

button { font: inherit; color: inherit; }

a { color: inherit; }

/* 03 · Background -------------------------------------------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 78% 46%, rgba(21, 92, 190, .55), transparent 62%),
    radial-gradient(900px 620px at 10% 8%, rgba(12, 60, 140, .5), transparent 60%),
    linear-gradient(135deg, #04122c 0%, #061a3c 42%, #0a2a5e 72%, #0e3f86 100%);
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  pointer-events: none;
}

.bg-glow--left {
  width: 620px;
  height: 620px;
  left: -180px;
  bottom: -220px;
  background: radial-gradient(circle, rgba(38, 198, 244, .5), transparent 70%);
  animation: float 16s var(--ease) infinite alternate;
}

.bg-glow--right {
  width: 720px;
  height: 720px;
  right: -240px;
  top: -160px;
  background: radial-gradient(circle, rgba(31, 111, 234, .5), transparent 70%);
  animation: float 20s var(--ease) infinite alternate-reverse;
}

@keyframes float {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(40px, -30px, 0) scale(1.12); }
}

/* Light-streak curves */
.bg-curves {
  position: absolute;
  inset: 0;
  opacity: .75;
}

.bg-curves svg {
  width: 100%;
  height: 100%;
}

.bg-curves path {
  fill: none;
  stroke: url(#none);
  stroke: rgba(120, 210, 255, .28);
  stroke-width: 1.4;
  filter: drop-shadow(0 0 6px rgba(90, 200, 255, .5));
}

.bg-curves path:nth-child(even) {
  stroke: rgba(90, 160, 255, .2);
  stroke-width: 1;
}

/* Dot grids */
.bg-dots {
  position: absolute;
  background-image: radial-gradient(rgba(130, 190, 255, .5) 1.6px, transparent 1.6px);
  background-size: 18px 18px;
  opacity: .5;
  pointer-events: none;
}

.bg-dots--tr {
  width: 190px;
  height: 130px;
  top: 26px;
  right: 34px;
  -webkit-mask-image: linear-gradient(to bottom left, #000, transparent 75%);
          mask-image: linear-gradient(to bottom left, #000, transparent 75%);
}

.bg-dots--bl {
  width: 240px;
  height: 130px;
  left: 22px;
  bottom: 26px;
  -webkit-mask-image: linear-gradient(to top right, #000, transparent 75%);
          mask-image: linear-gradient(to top right, #000, transparent 75%);
}

/* 04 · Shell / two-column layout ----------------------------- */
.shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  max-width: 1536px;
  margin: 0 auto;
  padding: 78px 100px 64px 54px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 596px;
  gap: 80px;
  align-items: center;
}

/* 05 · Left column ------------------------------------------- */
/* Top-aligned rather than centred: the marketing column is shorter
   than the card, and the reference hangs both from the same top edge. */
.left {
  align-self: start;
  max-width: 634px;
  animation: rise .7s var(--ease) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 84px;
}

.brand-logo {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(150deg, #2ee27a, #12a85a);
  box-shadow: 0 12px 30px rgba(23, 190, 105, .4);
  transition: transform var(--t);
}

.brand-logo svg { width: 34px; height: 34px; }

.brand:hover .brand-logo { transform: translateY(-2px) rotate(-4deg); }

.brand-text h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: -.4px;
}

.brand-text p {
  margin: 3px 0 0;
  font-size: 15px;
  font-weight: 400;
  color: rgba(190, 214, 245, .78);
}

/* Headline */
.headline h2 {
  margin: 0;
  font-size: 44px;
  line-height: 1.44;
  font-weight: 800;
  letter-spacing: -1px;
}

.grad {
  background: linear-gradient(95deg, #35a4ff 0%, #34d9a6 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.rule {
  display: block;
  width: 86px;
  height: 4px;
  margin: 14px 0 22px;
  border-radius: 999px;
  background: linear-gradient(90deg, #2f8bff, #2bd4a4);
}

.sub {
  margin: 0;
  font-size: 18px;
  line-height: 1.62;
  color: rgba(198, 219, 248, .85);
}

/* Stats grid */
.stats {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 295px));
  gap: 28px 26px;
}

.stat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .055);
  border: 1px solid rgba(255, 255, 255, .1);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
  transition: transform var(--t), background var(--t), border-color var(--t), box-shadow var(--t);
}

.stat:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .2);
  box-shadow: 0 18px 40px rgba(2, 12, 34, .45);
}

.stat-ico {
  flex: none;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  transition: transform var(--t);
}

.stat-ico svg { width: 32px; height: 32px; }

.stat:hover .stat-ico { transform: scale(1.08) rotate(-5deg); }

.stat-ico--blue   { background: linear-gradient(150deg, #4f8bff, #2f5ce0); box-shadow: 0 10px 24px rgba(47, 92, 224, .45); }
.stat-ico--green  { background: linear-gradient(150deg, #34d97f, #12a05c); box-shadow: 0 10px 24px rgba(18, 160, 92, .45); }
.stat-ico--purple { background: linear-gradient(150deg, #a874ff, #7b3ff0); box-shadow: 0 10px 24px rgba(123, 63, 240, .45); }
.stat-ico--orange { background: linear-gradient(150deg, #ffb454, #f4801f); box-shadow: 0 10px 24px rgba(244, 128, 31, .45); }

.stat-body { min-width: 0; }

.stat-body strong {
  display: block;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -.5px;
  line-height: 1.15;
}

.stat-body span {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  color: rgba(186, 210, 242, .8);
}

/* Trust bar */
.trust {
  margin-top: 37px;
  max-width: 634px;
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 22px 22px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .09);
  -webkit-backdrop-filter: blur(12px);
          backdrop-filter: blur(12px);
  transition: background var(--t), border-color var(--t);
}

.trust:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .17);
}

.trust-ico {
  flex: none;
  width: 30px;
  height: 30px;
  color: #4f9bff;
}

.trust-ico svg { width: 30px; height: 30px; }

.trust-body strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
}

.trust-body span {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  color: rgba(186, 210, 242, .78);
}

/* 06 · Right column / card ----------------------------------- */
.right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  min-width: 0;
  animation: rise .7s .1s var(--ease) both;
}

.card {
  width: 100%;
  min-width: 0;
  max-width: 596px;
  padding: 62px 54px 42px;
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, #fbfcfe 0%, #f4f7fb 100%);
  border: 1px solid rgba(255, 255, 255, .6);
  box-shadow: var(--shadow-card);
  color: var(--ink-900);
}

.card-logo {
  width: 74px;
  height: 74px;
  margin: 0 auto 18px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(150deg, #2ee27a, #12a85a);
  box-shadow: 0 14px 32px rgba(23, 190, 105, .38);
  transition: transform var(--t);
}

.card-logo svg { width: 42px; height: 42px; }

.card-logo:hover { transform: translateY(-3px) scale(1.04); }

.card-logo img {
  max-width: 74px;
  max-height: 74px;
  border-radius: 18px;
}

/* When a branded logo image is used, drop the green tile styling */
.card-logo--img {
  background: none;
  box-shadow: none;
  border-radius: 0;
  width: auto;
  height: auto;
}

.card-title {
  margin: 0;
  text-align: center;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -.6px;
  color: var(--ink-900);
}

.wave {
  display: inline-block;
  transform-origin: 70% 70%;
  animation: wave 2.6s var(--ease) infinite;
}

@keyframes wave {
  0%, 60%, 100% { transform: rotate(0deg); }
  10%, 30%      { transform: rotate(14deg); }
  20%, 40%      { transform: rotate(-8deg); }
}

.card-sub {
  margin: 9px 0 36px;
  text-align: center;
  font-size: 16px;
  color: var(--ink-500);
}

/* 07 · Flash / alerts ---------------------------------------- */
.alert {
  position: relative;
  margin: 0 0 16px;
  padding: 12px 40px 12px 14px;
  border-radius: var(--r-sm);
  font-size: 14px;
  line-height: 1.45;
  border: 1px solid transparent;
  animation: rise .3s var(--ease) both;
}

.alert ul {
  margin: 0;
  padding-left: 18px;
}

.alert-success {
  color: #14653a;
  background: #e7f8ef;
  border-color: #b7e7cd;
}

.alert-danger {
  color: #8c1c24;
  background: #fdeced;
  border-color: #f6c4c8;
}

.alert-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  opacity: .6;
  transition: opacity var(--t-fast), background var(--t-fast);
}

.alert-close:hover {
  opacity: 1;
  background: rgba(0, 0, 0, .07);
}

/* 08 · Form -------------------------------------------------- */
.field { margin-bottom: 28px; }

.field label,
.label-row label {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-700);
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.label-row label { margin-bottom: 8px; }

.link-forgot {
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--blue-500);
  text-decoration: none;
  transition: color var(--t-fast), opacity var(--t-fast);
}

.link-forgot:hover {
  color: #1450b8;
  text-decoration: underline;
}

.input {
  display: flex;
  align-items: center;
  height: 56px;
  padding: 0 16px;
  gap: 12px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1.5px solid var(--line);
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
}

.input:hover { border-color: #cbd5e1; }

.input:focus-within {
  border-color: var(--blue-400);
  box-shadow: 0 0 0 4px rgba(47, 139, 255, .16);
}

.input-ico {
  flex: none;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: var(--ink-400);
  transition: color var(--t);
}

.input-ico svg { width: 22px; height: 22px; }

.input:focus-within .input-ico { color: var(--blue-400); }

/* flex-basis 0 + min-width 0 stops the input's intrinsic ~20ch width from
   becoming a min-content floor that the card can't shrink below. */
.input input {
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 17px;
  color: var(--ink-900);
  font-family: inherit;
}

.input input::placeholder {
  color: var(--ink-400);
  opacity: 1;
}

.input input:-webkit-autofill {
  -webkit-text-fill-color: var(--ink-900);
  -webkit-box-shadow: 0 0 0 60px #fff inset;
}

.input.is-invalid {
  border-color: #e5484d;
  background: #fffafa;
}

.input.is-invalid:focus-within {
  box-shadow: 0 0 0 4px rgba(229, 72, 77, .14);
}

.toggle {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ink-400);
  cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast);
}

.toggle svg { width: 22px; height: 22px; }

.toggle:hover {
  color: var(--ink-700);
  background: #f1f5f9;
}

.toggle .eye-off { display: none; }

.toggle.is-on .eye { display: none; }

.toggle.is-on .eye-off { display: block; }

/* Inline validation message */
.err {
  margin: 6px 0 0;
  min-height: 0;
  font-size: 13px;
  font-weight: 500;
  color: #d93b40;
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity var(--t-fast), transform var(--t-fast);
}

.err.is-show {
  opacity: 1;
  transform: none;
}

/* Remember me */
.remember {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin: 8px 0 30px;
  cursor: pointer;
  -webkit-user-select: none;
          user-select: none;
}

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

.remember .box {
  flex: none;
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 6px;
  border: 1.5px solid #cbd5e1;
  background: #fff;
  color: #fff;
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.remember .box svg {
  width: 14px;
  height: 14px;
  opacity: 0;
  transform: scale(.5);
  transition: opacity var(--t-fast), transform var(--t-fast);
}

.remember:hover .box { border-color: var(--green-500); }

.remember input:checked + .box {
  background: var(--green-500);
  border-color: var(--green-500);
}

.remember input:checked + .box svg {
  opacity: 1;
  transform: none;
}

.remember input:focus-visible + .box {
  box-shadow: 0 0 0 4px rgba(34, 197, 94, .22);
}

.remember-text {
  font-size: 16px;
  color: var(--ink-700);
}

/* Sign in button */
.btn-signin {
  position: relative;
  width: 100%;
  height: 58px;
  border: 0;
  border-radius: var(--r-md);
  cursor: pointer;
  overflow: hidden;
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(90deg, #1566e2 0%, #1a7cd8 46%, #1fae9f 80%, #23c78c 100%);
  box-shadow: var(--shadow-btn);
  transition: transform var(--t), box-shadow var(--t), filter var(--t);
}

.btn-signin::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .32), transparent);
  transition: left .6s var(--ease);
}

.btn-signin:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
  filter: saturate(1.15) brightness(1.06);
}

.btn-signin:hover::after { left: 120%; }

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

.btn-signin:focus-visible {
  outline: 3px solid rgba(255, 255, 255, .7);
  outline-offset: 2px;
}

.btn-inner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: opacity var(--t-fast);
}

.btn-inner svg { width: 21px; height: 21px; }

.spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 22px;
  margin: -11px 0 0 -11px;
  border: 2.5px solid rgba(255, 255, 255, .35);
  border-top-color: #fff;
  border-radius: 50%;
  opacity: 0;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.btn-signin.is-loading { pointer-events: none; }
.btn-signin.is-loading .btn-inner { opacity: 0; }
.btn-signin.is-loading .spinner { opacity: 1; }

/* 09 · Divider ----------------------------------------------- */
.divider {
  position: relative;
  margin: 34px 0 24px;
  text-align: center;
}

.divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.divider span {
  position: relative;
  padding: 0 16px;
  background: #f6f8fc;
  font-size: 14px;
  color: var(--ink-500);
}

/* 10 · Social buttons ---------------------------------------- */
.socials {
  display: grid;
  gap: 18px;
}

.btn-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 57px;
  border-radius: var(--r-md);
  border: 1.5px solid var(--line);
  background: #fff;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-900);
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t), background var(--t);
}

.btn-social svg { width: 23px; height: 23px; }

.btn-social:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
  background: #fcfdff;
  box-shadow: 0 10px 26px rgba(15, 23, 42, .1);
}

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

.btn-social:focus-visible {
  outline: 3px solid rgba(47, 139, 255, .5);
  outline-offset: 2px;
}

/* 11 · Footer ------------------------------------------------ */
.copy {
  margin: 0;
  font-size: 14px;
  color: rgba(190, 214, 245, .8);
  text-align: center;
}

/* 12 · Toast ------------------------------------------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: 50;
  padding: 13px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: rgba(9, 24, 52, .93);
  border: 1px solid rgba(255, 255, 255, .16);
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .45);
  transform: translate(-50%, 22px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t), transform var(--t);
}

.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* 13 · Responsive -------------------------------------------- */
@media (max-width: 1280px) {
  .shell {
    padding: 52px 40px;
    gap: 40px;
  }
  .headline h2 { font-size: 44px; }
  .brand { margin-bottom: 56px; }
  .stats { margin-top: 42px; }
  .card { padding: 38px 40px 42px; }
}

@media (max-width: 1024px) {
  .shell {
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
    gap: 56px;
    padding: 48px 28px;
  }
  .left {
    align-self: center;
    width: 100%;
    max-width: 620px;
    text-align: center;
  }
  .brand { justify-content: center; }
  .rule { margin-inline: auto; }
  .stats {
    justify-content: center;
    grid-template-columns: repeat(2, minmax(0, 280px));
  }
  .stat { text-align: left; }
  .trust { text-align: left; }
  .right { width: 100%; }
  .card { max-width: 520px; }
  .bg-dots { display: none; }
}

@media (max-width: 620px) {
  .shell { padding: 36px 18px; }
  .headline h2 { font-size: 34px; letter-spacing: -.8px; }
  .sub { font-size: 16px; }
  .sub br { display: none; }
  .stats { grid-template-columns: 1fr; gap: 14px; }
  .card { padding: 30px 22px 34px; border-radius: 20px; }
  .card-title { font-size: 25px; }
  .input, .btn-social { height: 52px; }
  .btn-signin { height: 54px; }
  .brand-text h1 { font-size: 23px; }
}

/* 14 · Motion preference ------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}