@import url('https://fonts.googleapis.com/css2?family=Coiny&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary: #21449C;
  --primary-hover: #193B8B;
  --ink: #1F2937;
  --text: #444557;
  --muted: #757589;
  --line: #C5C5DB;
  --soft-blue: #3871C0;
  --white: #FFFFFF;
  --support-bg: #F8FAFD;
}

* {
  box-sizing: border-box
}

html,
body {
  margin: 0;
  width: 100%;
  min-width: 320px;
  min-height: 100%;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--ink);
  background: #EFF5FF;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button,
a,
label {
  -webkit-tap-highlight-color: transparent;
}

button,
a {
  cursor: pointer;
}

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

.auth-page {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: url('../images/auth-background.png') center center/cover no-repeat;
}

.auth-stage {
  position: relative;
  width: min(1440px, 100vw);
  height: min(1024px, 100vh);
  min-height: 760px;
  margin: 0 auto;
}

/* ===== LEFT CONTENT ===== */
.auth-intro {
  position: absolute;
  left: 120px;
  top: 117px;
  width: 650px;
  z-index: 2;
}

.auth-product-title {
  margin: 0;
  font-family: 'Coiny', cursive;
  font-weight: 400;
  font-size: 52px;
  line-height: 1.07;
  letter-spacing: .1px;
  text-transform: uppercase;
}

.auth-product-title .title-dark {
  display: block;
  color: #273143;
}

.auth-product-title .title-blue {
  display: block;
  color: #21449C;
}

.auth-tagline {
  margin-top: 29px;
  color: #444557;
  font-size: 19px;
  line-height: 1.52;
  font-weight: 400;
}

.auth-tagline span {
  display: block;
}

.auth-hero {
  position: absolute;
  left: 110px;
  bottom: 204px;
  width: 700px;
  height: auto;
  object-fit: contain;
  z-index: 2;
  pointer-events: none;
  user-select: none;
  animation: auth-hero-float 4s ease-in-out infinite;
  will-change: transform;
}

@keyframes auth-hero-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .auth-hero {
    animation: none;
  }
}

.auth-copyright {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 122px;
  z-index: 2;
  margin: 0;
  text-align: center;
  color: #404B52;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 400;
}

/* ===== CARD ===== */
.auth-card {
  position: absolute;
  left: 840px;
  top: 146px;
  width: 480px;
  min-height: 670px;
  padding: 56px 40px 28px;
  border: 1px solid rgba(215, 220, 231, .78);
  border-radius: 20px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 14px 36px rgba(43, 67, 115, .06);
  z-index: 4;
}

.auth-logo {
  display: block;
  width: 145px;
  max-height: 60px;
  object-fit: contain;
  margin: 0 auto 31px;
}

.auth-heading {
  margin: 0;
  text-align: center;
  color: #1A1B26;
  font-size: 29px;
  line-height: 1.15;
  font-weight: 700;
}

.auth-subtitle {
  margin: 16px 0 38px;
  text-align: center;
  color: #757589;
  font-size: 14px;
  line-height: 1.45;
}

.auth-form {
  width: 100%;
}

.field {
  margin-bottom: 20px;
}

.input-wrap {
  position: relative;
  width: 100%;
  height: 53px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, .74);
  transition: border-color .15s ease, box-shadow .15s ease;
}

.input-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(33, 68, 156, .07);
}

.field-icon {
  width: 43px;
  height: 51px;
  flex: 0 0 43px;
  display: grid;
  place-items: center;
  color: #7B8192;
}

.field-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.input-wrap input {
  min-width: 0;
  height: 51px;
  flex: 1;
  padding: 0 13px 0 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: #2D3748;
  font-size: 14px;
}

.input-wrap input::placeholder {
  color: #A4A8B6;
}

.input-wrap input:-webkit-autofill,
.input-wrap input:-webkit-autofill:hover,
.input-wrap input:-webkit-autofill:focus {
  -webkit-text-fill-color: #2D3748;
  -webkit-box-shadow: 0 0 0 1000px #FFFFFF inset;
  box-shadow: 0 0 0 1000px #FFFFFF inset;
  transition: background-color 5000s ease-in-out 0s;
}

.password-toggle {
  width: 45px;
  height: 51px;
  flex: 0 0 45px;
  border: 0;
  background: transparent;
  color: #757B8D;
  display: grid;
  place-items: center;
}

.password-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.field-error {
  min-height: 13px;
  margin-top: 5px;
  color: #EF4444;
  font-size: 10px;
}

.login-options {
  min-height: 28px;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #444557;
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}

.remember input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--primary);
}

.forgot-link {
  color: #21449C;
  font-size: 13px;
  white-space: nowrap;
}

.forgot-link:hover {
  text-decoration: underline;
}

.auth-primary-button {
  width: 100%;
  height: 52px;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  transition: background .15s ease;
}

.auth-primary-button:hover {
  background: var(--primary-hover);
}

.support-card {
  width: 100%;
  min-height: 116px;
  margin-top: 32px;
  padding: 20px 20px;
  border: 1px solid #E8EBF0;
  border-radius: 12px;
  background: rgba(248, 250, 253, .92);
  display: flex;
  align-items: center;
  gap: 17px;
}

.support-icon {
  width: 49px;
  height: 49px;
  flex: 0 0 49px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #3871C0;
  background: #E6EDFF;
}

.support-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.support-content {
  min-width: 0;
}

.support-label {
  margin-bottom: 6px;
  color: #5D5D6F;
  font-size: 13px;
}

.support-phone {
  margin-bottom: 4px;
  color: #3871C0;
  font-size: 20px;
  line-height: 1;
  font-weight: 700;
}

.support-time {
  color: #757589;
  font-size: 12px;
  line-height: 1.35;
}

.auth-page {
  overflow: auto;
}


@media(max-width:1000px) {
  .auth-page {
    overflow: auto;
  }

  .auth-stage {
    width: 100%;
    height: auto;
    min-height: 100vh;
    padding: 50px 22px;
  }

  .auth-intro,
  .auth-hero,
  .auth-copyright,
  .auth-card {
    position: relative;
    left: auto;
    top: auto;
    bottom: auto;
  }

  .auth-intro {
    width: min(650px, 100%);
    margin: 0 auto 30px;
    text-align: center;
  }

  .auth-product-title {
    font-size: clamp(36px, 7vw, 52px);
  }

  .auth-tagline {
    font-size: 16px;
  }

  .auth-hero {
    display: block;
    width: min(700px, 90vw);
    margin: 0 auto 34px;
  }

  .auth-card {
    width: min(480px, 100%);
    min-height: auto;
    margin: 0 auto;
  }

  .auth-copyright {
    margin: 34px auto 0;
    font-size: 14px;
  }
}


/* ===== Desktop large-content fit =====
   Giữ nguyên background; phóng lớn CONTENT và tận dụng chiều cao viewport. */
@media (min-width:1001px) {

  html,
  body {
    width: 100%;
    height: 100%;
    min-height: 0;
    overflow: hidden;
  }

  .auth-page {
    width: 100vw;
    height: 100vh;
    min-height: 0;
    overflow: hidden;
    /* background giữ nguyên */
  }

  .auth-stage {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    width: min(1600px, 100vw) !important;
    height: 100vh !important;
    min-height: 0 !important;
    margin: 0 auto !important;
    transform: none !important;
  }

  /* Khối giới thiệu lớn hơn và sát phía trên hơn */
  .auth-intro {
    left: clamp(70px, 6vw, 110px) !important;
    top: clamp(54px, 8vh, 82px) !important;
    width: 720px !important;
  }

  .auth-product-title {
    font-size: 60px !important;
    line-height: 1.04 !important;
  }

  .auth-tagline {
    margin-top: 27px !important;
    font-size: 20px !important;
    line-height: 1.5 !important;
  }

  /* Cụm laptop/sách/cây/bút được phóng lớn */
  .auth-hero {
    left: clamp(66px, 5.5vw, 100px) !important;
    bottom: clamp(88px, 11vh, 112px) !important;
    width: 760px !important;
  }

  /* Card lớn hơn, nhưng vẫn nằm trọn 1 viewport */
  .auth-card {
    left: auto !important;
    right: clamp(55px, 5vw, 90px) !important;
    top: 50% !important;
    width: 500px !important;
    min-height: 620px !important;
    padding: 45px 40px 24px !important;
    transform: translateY(-50%) !important;
  }

  .auth-logo {
    width: 155px !important;
    max-height: 62px !important;
    margin-bottom: 25px !important;
  }

  .auth-heading {
    font-size: 31px !important;
  }

  .auth-subtitle {
    margin: 13px 0 29px !important;
    font-size: 14px !important;
  }

  .field {
    margin-bottom: 16px !important;
  }

  .input-wrap {
    height: 51px !important;
  }

  .field-icon {
    height: 49px !important;
  }

  .input-wrap input {
    height: 49px !important;
    font-size: 14px !important;
  }

  .password-toggle {
    height: 49px !important;
  }

  .login-options {
    margin-bottom: 16px !important;
  }

  .auth-primary-button {
    height: 51px !important;
  }

  .support-card {
    min-height: 102px !important;
    margin-top: 25px !important;
    padding: 16px 18px !important;
  }

  /* Bản quyền sát mép dưới hơn để giảm khoảng trống */
  .auth-copyright {
    bottom: 30px !important;
    font-size: 17px !important;
  }
}

/* Laptop desktop thấp: chỉ thu nhẹ content, background vẫn giữ nguyên */
@media (min-width:1001px) and (max-height:780px) {
  .auth-intro {
    top: 42px !important;
  }

  .auth-product-title {
    font-size: 55px !important;
  }

  .auth-tagline {
    margin-top: 20px !important;
    font-size: 18px !important;
  }

  .auth-hero {
    bottom: 76px !important;
    width: 690px !important;
  }

  .auth-card {
    width: 470px !important;
    min-height: 590px !important;
    padding: 36px 36px 20px !important;
  }

  .auth-logo {
    width: 145px !important;
    margin-bottom: 18px !important;
  }

  .auth-heading {
    font-size: 28px !important;
  }

  .auth-subtitle {
    margin: 10px 0 22px !important;
  }

  .support-card {
    margin-top: 18px !important;
    min-height: 94px !important;
  }

  .auth-copyright {
    bottom: 24px !important;
    font-size: 15px !important;
  }
}


/* ===== Cân giữa hai khối desktop ===== */
@media (min-width:1001px) {

  /* Đưa toàn bộ content bên trái gần tâm hơn */
  .auth-intro {
    left: clamp(105px, 8.2vw, 145px) !important;
  }

  .auth-hero {
    left: clamp(100px, 7.7vw, 138px) !important;
  }

  /* Đưa card bên phải gần tâm hơn */
  .auth-card {
    right: clamp(95px, 7.2vw, 130px) !important;
  }
}

@media (min-width:1001px) and (max-width:1500px) {
  .auth-intro {
    left: 95px !important;
  }

  .auth-hero {
    left: 88px !important;
  }

  .auth-card {
    right: 82px !important;
  }
}
/* ===== RESPONSIVE AUTH REFINEMENT: tablet/mobile only ===== */
@media (max-width:1000px){
  html,body{min-width:0!important;overflow-x:hidden}
  .auth-page{min-height:100vh;overflow:auto;background:url('../images/auth-background.png') center/cover no-repeat!important}
  .auth-stage{width:100%!important;height:auto!important;min-height:100vh!important;padding:34px 22px 28px!important}
  .auth-intro{width:min(650px,100%)!important;margin:0 auto 22px!important;text-align:center}.auth-product-title{font-size:clamp(34px,6.5vw,50px)!important}.auth-tagline{margin-top:18px!important;font-size:16px!important}
  .auth-hero{width:min(620px,86vw)!important;margin:0 auto 22px!important}.auth-card{width:min(480px,100%)!important;min-height:auto!important;margin:0 auto!important;padding:36px 34px 26px!important}.auth-copyright{margin:26px auto 0!important;font-size:13px!important;padding:0 10px}
  .input-wrap input{font-size:16px!important}
}
@media (max-width:600px){
  .auth-stage{padding:24px 14px 22px!important}.auth-product-title{font-size:34px!important}.auth-tagline{font-size:14px!important}.auth-hero{width:min(520px,96vw)!important}.auth-card{padding:28px 20px 22px!important;border-radius:16px!important}.auth-logo{width:135px!important;margin-bottom:18px!important}.auth-heading{font-size:26px!important}.auth-subtitle{margin:10px 0 22px!important}.input-wrap{height:50px!important}.support-card{margin-top:20px!important;padding:14px!important}.support-phone{font-size:17px!important}.login-options{gap:8px}.remember,.forgot-link{font-size:12px!important}}