/* ============================================
   SyncText - Stylesheet
   Fonts: Ubuntu (primary), Noto Sans (secondary), DM Mono (mono)
   Shares the web-sights brand tokens with Bulk WebP Converter.
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@400;500;700&family=Noto+Sans:wght@400;500;600&family=DM+Mono:wght@400;500&display=swap');

/* -----------------------------------
   CSS Custom Properties (Brand Tokens)
   ----------------------------------- */
:root {
  /* Primary - slate blue-gray */
  --color-primary:           #243447;
  --color-primary-offset-1:  #141C24;
  --color-primary-offset-2:  #3A4C5C;
  --color-primary-muted:     #EDF2F5;

  /* Secondary - mint highlight */
  --color-secondary:         #3DDC97;
  --color-secondary-offset-1:#2BBF82;
  --color-secondary-offset-2:#9FF3D1;
  --color-secondary-muted:   #E9FBF5;
  --color-secondary-contrast:#1FA86C;

  /* Tertiary - coral */
  --color-tertiary:          #FF6F61;
  --color-tertiary-offset-1: #CC564C;
  --color-tertiary-offset-2: #FF8A75;
  --color-tertiary-muted:    #FFE9E6;
  --color-tertiary-contrast: #B23A2C;

  /* Shades */
  --white:       #ffffff;
  --off-white:   #EDF6FE;
  --black:       #000000;
  --off-black:   #231F20;

  /* Fonts */
  --font-primary:   'Ubuntu', sans-serif;
  --font-secondary: 'Noto Sans', sans-serif;
  --font-mono:      'DM Mono', monospace;

  /* Semantic aliases used in components */
  --bg:           var(--color-primary-offset-1);
  --surface:      var(--color-primary);
  --surface2:     var(--color-primary-offset-2);
  --surface3:     #2e3f50;
  --border:       rgba(255, 255, 255, 0.08);
  --border2:      rgba(255, 255, 255, 0.14);
  --accent:       var(--color-secondary);
  --accent-dim:   rgba(61, 220, 151, 0.12);
  --accent-glow:  rgba(61, 220, 151, 0.25);
  --accent-dark:  var(--color-secondary-contrast);
  --text:         var(--off-white);
  --text2:        #92aabf;
  --text3:        #556a7a;
  --danger:       var(--color-tertiary);
  --danger-dim:   rgba(255, 111, 97, 0.12);
}

/* -----------------------------------
   Reset & Base
   ----------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 1rem 3rem;
}

/* -----------------------------------
   Header
   ----------------------------------- */
header {
  width: 100%;
  max-width: 860px;
  padding: 3rem 0 2.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.logo-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.logo-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text);
}

.logo-title span { color: var(--accent); }

.header-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  text-align: right;
  line-height: 1.8;
}

/* -----------------------------------
   Main Layout
   ----------------------------------- */
.main {
  width: 100%;
  max-width: 860px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* -----------------------------------
   Intro
   ----------------------------------- */
.intro {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.intro-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.intro-body {
  font-family: var(--font-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text2);
  max-width: 62ch;
}

.intro-body strong { color: var(--text); font-weight: 600; }

.intro-steps {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.intro-steps li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.9rem 0.6rem 0.6rem;
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  color: var(--text2);
}

.intro-steps strong { color: var(--text); font-weight: 600; }

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--accent-dim);
  border: 1px solid rgba(61, 220, 151, 0.3);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  flex-shrink: 0;
}

.intro-note {
  font-family: var(--font-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  max-width: 62ch;
}

.intro-note strong { color: var(--text); font-weight: 600; }

/* -----------------------------------
   Connection Bar
   ----------------------------------- */
.conn-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.code-box {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: var(--surface3);
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 0.4rem 0.5rem 0.4rem 0.85rem;
}

.code-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.code-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--accent);
  user-select: all;
  min-width: 5ch;
  text-align: center;
}

.join {
  display: flex;
  gap: 0.4rem;
}

input#joinInput {
  background: var(--surface3);
  border: 1px solid var(--border2);
  border-radius: 10px;
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.15em;
  width: 130px;
  text-transform: uppercase;
  outline: none;
  transition: border-color 0.15s;
}

input#joinInput:focus { border-color: var(--accent); }
input#joinInput::placeholder { color: var(--text3); letter-spacing: 0.1em; }

/* -----------------------------------
   Buttons
   ----------------------------------- */
.join-btn {
  padding: 0.5rem 1.1rem;
  border-radius: 10px;
  background: var(--accent);
  border: none;
  color: var(--color-primary-offset-1);
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}

.join-btn:hover  { opacity: 0.9; }
.join-btn:active { transform: scale(0.98); }

.ghost-btn {
  padding: 0.35rem 0.7rem;
  border-radius: 8px;
  background: var(--accent-dim);
  border: 1px solid rgba(61, 220, 151, 0.3);
  color: var(--accent);
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.ghost-btn:hover {
  background: var(--accent-glow);
  border-color: rgba(61, 220, 151, 0.5);
}

/* -----------------------------------
   Status
   ----------------------------------- */
.conn-spacer { flex: 1; }

.status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text2);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text3);
  box-shadow: 0 0 0 3px transparent;
  transition: background 0.2s, box-shadow 0.2s;
}

.dot.on {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* -----------------------------------
   The Pad
   ----------------------------------- */
.pad {
  flex: 1;
  min-height: 320px;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

.pad:focus { border-color: var(--border2); }
.pad::placeholder { color: var(--text3); }

/* -----------------------------------
   Toast
   ----------------------------------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--text);
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  font-family: var(--font-secondary);
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  z-index: 10;
}

.toast.show { opacity: 1; }

/* -----------------------------------
   Responsive
   ----------------------------------- */
@media (max-width: 600px) {
  header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .conn-bar { flex-direction: column; align-items: stretch; }
  .code-box { justify-content: space-between; }
  .conn-spacer { display: none; }
  .join input#joinInput { flex: 1; width: auto; }
  .status { justify-content: flex-end; }
}

/* -----------------------------------
   Footer / Backlink
   ----------------------------------- */
.site-footer {
  width: 100%;
  max-width: 860px;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.footer-brand:hover { opacity: 1; }

.footer-logo {
  height: 24px;
  width: auto;
  display: block;
}