/* ============================================================
   MSETCL Visitor Portal — Login page
   ============================================================ */

:root {
  --color-bg: #d3dbee;
  --color-bg-soft: #dbe2f2;
  --color-brand: #1e4bc6;
  --color-brand-dark: #163a9c;
  --color-btn-start: #4c82f5;
  --color-btn-end: #1f4cc7;
  --color-card-bg: #ffffff;
  --color-label: #12172b;
  --color-input-border: #e6e8f0;
  --color-input-border-focus: #a9beF5;
  --color-input-bg: #ffffff;
  --color-error-bg: #fdecec;
  --color-error-text: #b3261e;
  --color-error-border: #f6c6c3;

  --radius-card: 28px;
  --radius-field: 12px;
  --shadow-card: 0 30px 60px -20px rgba(30, 60, 140, 0.28), 0 10px 25px -10px rgba(30, 60, 140, 0.15);
  --shadow-btn: 0 12px 24px -8px rgba(31, 76, 199, 0.55);

  --font-body: "Poppins", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: radial-gradient(120% 140% at 15% 0%, var(--color-bg-soft) 0%, var(--color-bg) 55%, #c7d1e9 100%);
  color: var(--color-label);
  min-height: 100vh;
}

.login-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 20px 100px;
  position: relative;
}

.login-wrap {
  width: 100%;
  max-width: 620px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---------- Heading ---------- */
.login-heading {
  margin: 0 0 32px;
  text-align: center;
  font-size: clamp(28px, 4.2vw, 42px);
  line-height: 1.25;
  font-style: italic;
  font-weight: 500;
  color: var(--color-brand);
  letter-spacing: 0.2px;
}

.login-heading b {
  font-weight: 700;
}

/* ---------- Card ---------- */
.login-card {
  width: 100%;
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 44px 48px 48px;
}

@media (max-width: 520px) {
  .login-card {
    padding: 32px 24px 36px;
    border-radius: 22px;
  }
}

/* ---------- Alert ---------- */
.login-alert {
  margin-bottom: 22px;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
  font-size: 14px;
  font-weight: 500;
}

/* ---------- Form ---------- */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-group label {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-label);
}

.form-group input {
  width: 100%;
  height: 56px;
  padding: 0 20px;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-label);
  background: var(--color-input-bg);
  border: 1.5px solid var(--color-input-border);
  border-radius: var(--radius-field);
  box-shadow: 0 2px 6px rgba(20, 30, 70, 0.04);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input::placeholder {
  color: #b3b8c9;
}

.form-group input:hover {
  border-color: #d7dbea;
}

.form-group input:focus {
  border-color: var(--color-btn-end);
  box-shadow: 0 0 0 4px rgba(31, 76, 199, 0.12);
}

/* ---------- Button ---------- */
.btn-login {
  margin-top: 8px;
  height: 58px;
  border: none;
  border-radius: var(--radius-field);
  background: linear-gradient(135deg, var(--color-btn-start) 0%, var(--color-btn-end) 100%);
  color: #ffffff;
  font-family: inherit;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.3px;
  cursor: pointer;
  box-shadow: var(--shadow-btn);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.btn-login:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 16px 28px -8px rgba(31, 76, 199, 0.6);
}

.btn-login:active {
  transform: translateY(0);
  box-shadow: 0 8px 16px -6px rgba(31, 76, 199, 0.5);
}

.btn-login:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-login:focus-visible,
.form-group input:focus-visible {
  outline: 3px solid #8fb0ff;
  outline-offset: 2px;
}

/* ---------- Language switcher ---------- */
.lang-switcher {
  position: fixed;
  right: 28px;
  bottom: 22px;
  z-index: 20;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--color-brand);
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 10px;
  transition: background 0.15s ease;
}

.lang-toggle:hover,
.lang-toggle[aria-expanded="true"] {
  background: rgba(30, 75, 198, 0.08);
}

.lang-toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.lang-menu {
  list-style: none;
  margin: 0;
  padding: 8px;
  position: absolute;
  right: 0;
  bottom: calc(100% + 10px);
  min-width: 160px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 18px 36px -12px rgba(30, 60, 140, 0.35);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.lang-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.lang-menu a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--color-label);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}

.lang-menu a:hover {
  background: #f1f4fd;
}

.lang-menu a.active {
  color: var(--color-brand);
  font-weight: 700;
  background: #eef2fd;
}

@media (max-width: 480px) {
  .lang-switcher {
    right: 16px;
    bottom: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}