/* ===================================================
   MailBox Login – style.css
   Wide two-column card  ·  dark / light adaptive
   =================================================== */

/* ---------- Design tokens ---------- */
:root {
  --clr-bg:           #f0f4ff;
  --clr-surface:      #ffffff;
  --clr-border:       #c4c9d4;
  --clr-border-focus: #4F6CF7;
  --clr-text:         #1a1d2e;
  --clr-text-muted:   #5f6368;
  --clr-accent:       #4F6CF7;
  --clr-accent-hover: #3a55d4;
  --clr-accent-text:  #ffffff;
  --clr-ghost-hover:  #eef1fd;
  --clr-chip-bg:      #eef1fd;
  --clr-chip-border:  #c4cbf5;
  --clr-error:        #d93025;
  --clr-shadow:       rgba(0, 0, 0, 0.10);

  --radius-card:  16px;
  --radius-input:  8px;
  --radius-btn:   24px;

  --font-sans: 'Google Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --t: 0.2s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --clr-bg:           #111214;
    --clr-surface:      #1e2028;
    --clr-border:       #35394a;
    --clr-border-focus: #738af8;
    --clr-text:         #e8eaf6;
    --clr-text-muted:   #9aa0b8;
    --clr-accent:       #738af8;
    --clr-accent-hover: #8fa0fc;
    --clr-accent-text:  #0f1117;
    --clr-ghost-hover:  #252839;
    --clr-chip-bg:      #252839;
    --clr-chip-border:  #3a3f55;
    --clr-error:        #f28b82;
    --clr-shadow:       rgba(0, 0, 0, 0.50);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  transition: background var(--t), color var(--t);
}

a { color: var(--clr-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 2px; border-radius: 4px; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- Page layout ---------- */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ---------- Card container ---------- */
.card-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}

/* ---------- Card (wide, like Gmail) ---------- */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-card);
  box-shadow: 0 4px 32px var(--clr-shadow);
  width: 100%;
  max-width: 860px;
  padding: 36px 40px 40px;
  transition: background var(--t), border-color var(--t);
}

/* ---------- Logo row (top-left) ---------- */
.card-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 40px;
}

.logo-icon { width: 38px; height: 38px; flex-shrink: 0; }

.logo-text {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: -0.2px;
}

/* ---------- Two-column body ---------- */
.card-body {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}

/* LEFT column */
.col-left {
  flex: 0 0 260px;
  padding-top: 8px;
}

.card-title {
  font-size: 2rem;
  font-weight: 400;
  color: var(--clr-text);
  margin-bottom: 14px;
  line-height: 1.2;
}

.card-subtitle {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* RIGHT column */
.col-right {
  flex: 1;
  min-width: 0;
  position: relative;
}

/* ---------- Screens (show/hide) ---------- */
.screen {
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  transition: opacity 0.25s ease, transform 0.25s ease;
  transform: translateY(6px);
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
  transform: translateY(0);
}

/* ---------- Email chip ---------- */
.email-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 10px;
  border: 1px solid var(--clr-chip-border);
  border-radius: 24px;
  background: var(--clr-chip-bg);
  font-size: 0.9rem;
  color: var(--clr-text);
  margin-bottom: 24px;
  transition: background var(--t), border-color var(--t);
  max-width: 100%;
}
.email-chip svg:first-child { width: 20px; height: 20px; flex-shrink: 0; color: var(--clr-text-muted); }
#emailChipText { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
.chip-chevron { width: 10px; height: 6px; flex-shrink: 0; color: var(--clr-text-muted); }
.email-chip:hover { background: var(--clr-ghost-hover); border-color: var(--clr-border-focus); }

/* ---------- Floating-label input ---------- */
.field-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 4px; }

.input-wrapper { position: relative; }

.field-input {
  width: 100%;
  padding: 16px 46px 16px 14px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--clr-text);
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-input);
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}
.field-input:focus {
  border-color: var(--clr-border-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--clr-border-focus) 18%, transparent);
}

.field-label {
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--clr-text-muted);
  pointer-events: none;
  background: var(--clr-surface);
  padding: 0 4px;
  border-radius: 4px;
  transition: top 0.15s ease, font-size 0.15s ease, color 0.15s ease;
}
.field-input:focus + .field-label,
.field-input:not(:placeholder-shown) + .field-label {
  top: 0;
  font-size: 0.75rem;
  color: var(--clr-border-focus);
}

/* Error state */
.field-input.is-error { border-color: var(--clr-error); }
.field-input.is-error:focus { box-shadow: 0 0 0 3px color-mix(in srgb, var(--clr-error) 18%, transparent); }
.field-input.is-error + .field-label { color: var(--clr-error); }
.field-error { font-size: 0.8rem; color: var(--clr-error); min-height: 18px; padding-left: 2px; }

/* Show/hide password toggle */
.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-text-muted);
  padding: 4px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  transition: color var(--t), background var(--t);
}
.toggle-password:hover { color: var(--clr-text); background: var(--clr-ghost-hover); }
.eye-icon { width: 20px; height: 20px; }

/* ---------- Secondary links (Forgot email / password) ---------- */
.secondary-link {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-accent);
  margin: 10px 0 20px;
}

/* ---------- Hint text ---------- */
.hint-text {
  font-size: 0.84rem;
  color: var(--clr-text-muted);
  line-height: 1.55;
  margin-bottom: 28px;
}
.hint-link { font-weight: 500; white-space: nowrap; }

/* ---------- Action row ---------- */
.card-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.btn-ghost {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-accent);
  padding: 10px 18px;
  border-radius: var(--radius-btn);
  transition: background var(--t);
}
.btn-ghost:hover { background: var(--clr-ghost-hover); text-decoration: none; }

.btn-primary {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-accent-text);
  background: var(--clr-accent);
  padding: 10px 28px;
  border-radius: var(--radius-btn);
  transition: background var(--t), transform 0.1s ease;
}
.btn-primary:hover  { background: var(--clr-accent-hover); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary.loading { opacity: 0.7; pointer-events: none; }

/* ---------- Footer ---------- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 24px;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--clr-text-muted); transition: color var(--t); }
.footer-links a:hover { color: var(--clr-text); text-decoration: none; }

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--clr-text-muted);
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 20px;
  transition: background var(--t), color var(--t);
}
.lang-btn:hover { background: var(--clr-ghost-hover); color: var(--clr-text); }
.lang-btn svg { width: 10px; height: 6px; }

/* ---------- Responsive: stack to single column on small screens ---------- */
@media (max-width: 640px) {
  .card {
    padding: 28px 22px 32px;
    border: none;
    box-shadow: none;
    background: transparent;
  }

  .card-body {
    flex-direction: column;
    gap: 28px;
  }

  .col-left { flex: none; padding-top: 0; }

  .card-title { font-size: 1.6rem; }

  .card-container { padding: 16px 16px; align-items: flex-start; }
}

/* ---------- Animations ---------- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}
.shake { animation: shake 0.4s ease; }