*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --pt-write:      #7B5EA7;
  --pt-write-d:    #5f4585;
  --pt-write-l:    #9b7dc4;
  --pt-write-pale: #f3effb;
  --pt-ink:        #1a2235;
  --pt-light:      #f5f7fa;
  --pt-border:     #dde2ec;
  --pt-muted:      #6b7a99;
  --pt-surface:    #ffffff;
  --danger:        #c0392b;
  --success:       #27794e;
  --warning:       #a07800;
  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px;
  --space-xs: 4px; --space-sm: 8px; --space-md: 16px; --space-lg: 24px; --space-xl: 40px;
  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem;
  --text-lg: 1.125rem; --text-xl: 1.25rem; --text-2xl: 1.5rem;
  --text-3xl: 1.875rem; --text-4xl: 2.25rem;
  --shadow-card: 0 2px 12px rgba(26,34,53,0.08);
  --shadow-modal: 0 8px 32px rgba(26,34,53,0.16);
  --t: 160ms ease;
}

html { font-size: 15px; }
body { font-family: 'DM Sans', system-ui, sans-serif; background: var(--pt-light); color: var(--pt-ink); min-height: 100vh; }

.screen { display: none; }
.screen.active { display: flex; flex-direction: column; min-height: 100vh; }

/* ── CARD ── */
.card {
  background: var(--pt-surface); border: 1px solid var(--pt-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-card);
  padding: var(--space-lg); width: 100%; max-width: 460px;
  animation: fadeUp 0.4s ease both;
}
.card-title { font-family: 'Lora', serif; font-size: var(--text-2xl); font-weight: 600; color: var(--pt-ink); margin-bottom: 0.3rem; }
.card-subtitle { font-size: var(--text-sm); color: var(--pt-muted); margin-bottom: var(--space-lg); line-height: 1.6; }

/* ── FORMS ── */
.form-group { margin-bottom: var(--space-md); }
.form-group label { display: block; font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--pt-muted); margin-bottom: 0.35rem; }
.form-input, .form-select { width: 100%; padding: 0.6rem 0.9rem; border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); font-family: 'DM Sans', sans-serif; font-size: var(--text-sm); color: var(--pt-ink); background: var(--pt-surface); transition: border-color var(--t), box-shadow var(--t); }
.form-input:focus, .form-select:focus { outline: none; border-color: var(--pt-write); box-shadow: 0 0 0 3px rgba(123,94,167,0.12); }
.form-hint { font-size: var(--text-xs); color: var(--pt-muted); margin-top: 0.3rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; align-items: start; }
.form-row.join-time-row { grid-template-columns: 3fr 2fr; }

/* Join code field with regen button */
.join-code-field { display: flex; gap: 0.4rem; align-items: center; }
.join-code-field .form-input { flex: 1; min-width: 0; }
.join-code-regen { padding: 0.45rem 0.55rem; font-size: 0.85rem; border-radius: var(--radius-sm); flex-shrink: 0; }

/* Projector overlay */
#projector-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 9000;
  background: var(--pt-ink);
  flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer;
}
#projector-overlay.visible { display: flex; }
.projector-close {
  position: absolute; top: 2rem; right: 2rem;
  background: rgba(255,255,255,0.08); border: 1.5px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.6); font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem; font-weight: 600; padding: 0.5rem 1.1rem;
  border-radius: var(--radius-md); cursor: pointer;
}
.projector-close:hover { background: rgba(255,255,255,0.14); color: #fff; }
.projector-title {
  font-family: 'DM Sans', sans-serif; font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 500; color: rgba(255,255,255,0.45);
  margin-bottom: 1.5rem; letter-spacing: 0.04em;
  text-align: center; max-width: 80vw;
}
.projector-code {
  font-family: 'DM Mono', monospace; font-size: clamp(4rem, 18vw, 16rem);
  font-weight: 500; color: #fff; letter-spacing: 0.08em;
  line-height: 1; text-align: center;
}
.projector-hint {
  margin-top: 2.5rem; font-family: 'DM Sans', sans-serif;
  font-size: clamp(0.8rem, 1.8vw, 1.1rem); color: rgba(255,255,255,0.3);
  letter-spacing: 0.03em;
}

/* ── BUTTONS ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; padding: 0.65rem 1.25rem; border-radius: var(--radius-md); font-family: 'DM Sans', sans-serif; font-size: var(--text-sm); font-weight: 600; cursor: pointer; border: 1.5px solid transparent; transition: all var(--t); text-decoration: none; line-height: 1; }
.btn-primary { background: var(--pt-write); color: #fff; border-color: var(--pt-write); }
.btn-primary:hover { background: var(--pt-write-d); border-color: var(--pt-write-d); }
.btn-secondary { background: transparent; color: var(--pt-write); border-color: var(--pt-write); }
.btn-secondary:hover { background: var(--pt-write-pale); }
.btn-ghost { background: transparent; color: var(--pt-muted); border-color: var(--pt-border); }
.btn-ghost:hover { background: var(--pt-light); color: var(--pt-ink); border-color: var(--pt-muted); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #a93226; }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-lg { padding: 0.85rem 1.75rem; font-size: var(--text-base); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

.text-link { color: var(--pt-write); cursor: pointer; font-size: var(--text-sm); text-decoration: underline; background: none; border: none; padding: 0; font-family: 'DM Sans', sans-serif; }
.text-link:hover { color: var(--pt-write-d); }

/* ── STATUS ── */
.status-msg { font-size: var(--text-xs); padding: 0.6rem 0.9rem; border-radius: var(--radius-md); margin-top: 0.75rem; display: none; line-height: 1.5; }
.status-msg.error   { background: #fdecea; border: 1px solid #f5b7b1; color: var(--danger); display: block; }
.status-msg.success { background: #eaf5ef; border: 1px solid #a9d9be; color: var(--success); display: block; }
.status-msg.info    { background: var(--pt-write-pale); border: 1px solid rgba(123,94,167,0.25); color: var(--pt-write-d); display: block; }

.disclaimer { background: var(--pt-light); border-left: 3px solid var(--pt-muted); border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: var(--space-sm) var(--space-md); font-size: var(--text-sm); color: var(--pt-muted); line-height: 1.6; }
.divider { border: none; border-top: 1px solid var(--pt-border); margin: var(--space-lg) 0; }

/* ── ANIMATIONS ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

/* ── AUTH SCREENS (dark) ── */
.auth-screen { align-items: center; justify-content: center; padding: 2rem 1.5rem; background: var(--pt-ink); }
.auth-screen .card { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.1); }
.auth-screen .card-title { color: #fff; }
.auth-screen .card-subtitle { color: rgba(255,255,255,0.45); }
.auth-screen .form-group label { color: rgba(255,255,255,0.5); }
.auth-screen .form-input { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.12); color: #fff; }
.auth-screen .form-input::placeholder { color: rgba(255,255,255,0.25); }
.auth-screen .form-input:focus { border-color: var(--pt-write-l); box-shadow: 0 0 0 3px rgba(123,94,167,0.2); }
.auth-screen .text-link { color: var(--pt-write-l); }
.auth-screen .text-link:hover { color: #fff; }
.auth-screen .divider { border-color: rgba(255,255,255,0.1); }
/* Google OAuth button */
.btn-google {
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  background: #fff; color: #3c4043;
  border: 1px solid #dadce0;
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 500;
  padding: 0.65rem 1rem; border-radius: var(--radius);
  cursor: pointer; transition: background 150ms ease, box-shadow 150ms ease;
  width: 100%;
}
.btn-google:hover { background: #f8f9fa; box-shadow: 0 1px 3px rgba(0,0,0,0.12); }
.btn-google:active { background: #f1f3f4; }
/* "or" divider between email and Google */
.auth-or {
  display: flex; align-items: center; gap: 0.75rem;
  margin: var(--space-md) 0;
  color: rgba(255,255,255,0.3); font-size: var(--text-xs);
}
.auth-or::before, .auth-or::after {
  content: ''; flex: 1; border-top: 1px solid rgba(255,255,255,0.12);
}
.auth-footer { margin-top: var(--space-md); text-align: center; font-size: var(--text-sm); color: rgba(255,255,255,0.4); }

.back-link { font-size: var(--text-sm); color: var(--pt-muted); cursor: pointer; margin-bottom: var(--space-lg); display: inline-flex; align-items: center; gap: 0.3rem; transition: color var(--t); background: none; border: none; font-family: 'DM Sans', sans-serif; }
.back-link:hover { color: var(--pt-ink); }
.auth-screen .back-link { color: rgba(255,255,255,0.35); }
.auth-screen .back-link:hover { color: rgba(255,255,255,0.7); }

.auth-wordmark { display: flex; align-items: center; gap: 0.5rem; margin-bottom: var(--space-lg); }
.auth-wordmark-icon { width: 28px; height: 28px; background: var(--pt-write); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; }
.auth-wordmark-text { font-family: 'Lora', serif; font-size: var(--text-base); font-weight: 600; color: rgba(255,255,255,0.8); }
.auth-wordmark-text em { font-style: italic; color: var(--pt-write-l); }

.login-wrap { max-width: 460px; width: 100%; display: flex; flex-direction: column; align-items: flex-start; }

/* ── LANDING ── */
#screen-landing { align-items: center; justify-content: center; background: var(--pt-ink); position: relative; overflow: hidden; }
#screen-landing::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 70% 70% at 80% 20%, rgba(123,94,167,0.25) 0%, transparent 60%), radial-gradient(ellipse 50% 50% at 15% 85%, rgba(123,94,167,0.12) 0%, transparent 50%); pointer-events: none; }
.landing-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px); background-size: 52px 52px; pointer-events: none; }
.landing-inner { position: relative; z-index: 1; text-align: center; padding: 2rem 1.5rem; animation: fadeUp 0.5s ease both; }
.landing-wordmark { display: flex; align-items: center; justify-content: center; gap: 0.6rem; margin-bottom: 2rem; }
.landing-wordmark-icon { width: 36px; height: 36px; background: var(--pt-write); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; }
.landing-wordmark-text { font-family: 'Lora', serif; font-size: var(--text-lg); font-weight: 600; color: rgba(255,255,255,0.9); }
.landing-wordmark-text em { font-style: italic; color: var(--pt-write-l); }
.landing-title { font-family: 'Lora', serif; font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl)); font-weight: 600; color: #fff; margin-bottom: 0.6rem; line-height: 1.2; }
.landing-tagline { font-size: var(--text-base); color: rgba(255,255,255,0.45); margin-bottom: 2.75rem; font-style: italic; font-family: 'Lora', serif; }
.landing-choices { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }
.landing-choice { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-lg); padding: 1.75rem 2.25rem; cursor: pointer; transition: all var(--t); min-width: 190px; color: #fff; text-align: center; }
.landing-choice:hover { background: rgba(123,94,167,0.2); border-color: var(--pt-write-l); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(123,94,167,0.25); }
.landing-choice-icon { font-size: 1.8rem; margin-bottom: 0.65rem; }
.landing-choice-label { font-family: 'Lora', serif; font-size: var(--text-lg); font-weight: 600; margin-bottom: 0.3rem; }
.landing-choice-desc { font-size: var(--text-xs); color: rgba(255,255,255,0.45); line-height: 1.5; }

/* ── TRANSPARENCY ── */
#screen-student-login { align-items: center; justify-content: center; padding: 2rem 1.5rem; background: var(--pt-light); }
#screen-transparency { align-items: center; justify-content: center; padding: 2rem 1.5rem; background: var(--pt-light); }
.transparency-card { background: var(--pt-surface); border: 1px solid var(--pt-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); padding: var(--space-xl) var(--space-lg); width: 100%; max-width: 520px; animation: fadeUp 0.4s ease both; }
.transparency-icon { width: 48px; height: 48px; background: var(--pt-write-pale); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: var(--space-lg); }
.transparency-card h2 { font-family: 'Lora', serif; font-size: var(--text-2xl); font-weight: 600; color: var(--pt-ink); margin-bottom: var(--space-sm); }
.transparency-card p { font-size: var(--text-base); color: var(--pt-ink); line-height: 1.75; margin-bottom: var(--space-lg); }
.transparency-items { list-style: none; margin-bottom: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-sm); }
.transparency-items li { display: flex; gap: var(--space-sm); align-items: flex-start; font-size: var(--text-sm); color: var(--pt-ink); line-height: 1.5; }
.t-bullet { width: 20px; height: 20px; flex-shrink: 0; background: var(--pt-write-pale); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.65rem; color: var(--pt-write); font-weight: 700; margin-top: 1px; }
.transparency-not { background: var(--pt-light); border: 1px solid var(--pt-border); border-radius: var(--radius-md); padding: var(--space-sm) var(--space-md); margin-bottom: var(--space-lg); }
.transparency-not-label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--pt-muted); margin-bottom: var(--space-xs); }
.transparency-not p { font-size: var(--text-sm); color: var(--pt-muted); margin-bottom: 0; line-height: 1.6; }

/* ── WRITING ENV ── */
#screen-writing { background: var(--pt-light); flex-direction: column; height: 100vh; overflow: hidden; }
.writing-header { background: var(--pt-ink); color: #fff; padding: 0 var(--space-lg); flex-shrink: 0; z-index: 100; box-shadow: 0 2px 16px rgba(26,34,53,0.2); }
.writing-header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0.65rem 0; gap: var(--space-md); }
.writing-header-left { display: flex; flex-direction: column; gap: 0.1rem; }
.writing-header-brand { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.15rem; }
.writing-header-brand-dot { width: 8px; height: 8px; background: var(--pt-write-l); border-radius: 50%; }
.writing-header-suite { font-size: var(--text-xs); color: rgba(255,255,255,0.35); letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500; }
.writing-assignment-title { font-family: 'Lora', serif; font-size: var(--text-base); font-weight: 600; color: #fff; }
.writing-student-name { font-size: var(--text-xs); color: rgba(255,255,255,0.45); }
.timer-display { font-family: 'DM Mono', monospace; font-size: 1.65rem; font-weight: 500; color: #fff; letter-spacing: 0.04em; transition: color var(--t); flex-shrink: 0; }
.timer-display.warning { color: #f0c040; }
.timer-display.danger  { color: #e07070; }
.writing-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 0.1rem; flex-shrink: 0; }
.word-count-display { font-size: var(--text-sm); color: rgba(255,255,255,0.6); font-family: 'DM Mono', monospace; }
.autosave-indicator { font-size: var(--text-xs); color: rgba(255,255,255,0.3); }
.autosave-indicator.saving { color: #f0c040; animation: pulse 1s infinite; }
.autosave-indicator.saved  { color: #6dce8e; }
.transparency-bar { background: rgba(123,94,167,0.15); border-bottom: 1px solid rgba(123,94,167,0.2); padding: 0.35rem var(--space-lg); font-size: var(--text-xs); color: var(--pt-write-l); font-weight: 500; letter-spacing: 0.04em; display: flex; align-items: center; gap: 0.4rem; flex-shrink: 0; }
.transparency-bar-dot { width: 6px; height: 6px; background: var(--pt-write-l); border-radius: 50%; animation: pulse 2s infinite; }
.writing-main { flex: 1; display: flex; flex-direction: column; max-width: 900px; width: 100%; margin: 0 auto; padding: var(--space-lg); min-height: 0; overflow-y: auto; }
#source-panel-container { display: none; flex-direction: column; overflow: hidden; }
#source-panel-container.active { display: flex; flex: 1; min-height: 0; }
.writing-footer { width: 100%; padding: var(--space-sm) var(--space-lg); flex-shrink: 0; display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; background: var(--pt-light); border-top: 1px solid var(--pt-border); }
.writing-footer-left { font-size: var(--text-xs); color: var(--pt-muted); }
#essay-textarea { flex: 1; width: 100%; min-height: 0; height: 100%; padding: 1.75rem 2rem; font-family: 'DM Sans', sans-serif; font-size: var(--text-lg); line-height: 1.9; color: var(--pt-ink); background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); resize: none; transition: border-color var(--t); overflow-y: auto; }
#essay-textarea:focus { outline: none; border-color: var(--pt-write); box-shadow: var(--shadow-card), 0 0 0 3px rgba(123,94,167,0.08); }
#essay-textarea:disabled { background: var(--pt-light); cursor: not-allowed; color: var(--pt-muted); }
#essay-textarea::placeholder { color: var(--pt-border); }

/* ── PROMPT PANEL ── */
.prompt-panel { max-width: 900px; width: 100%; margin: 0 auto; padding: var(--space-md) var(--space-lg) 0; flex-shrink: 0; }
.prompt-panel-toggle { display: flex; align-items: center; justify-content: space-between; background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); padding: 0.6rem var(--space-md); cursor: pointer; transition: all var(--t); margin-bottom: 0; }
.prompt-panel-toggle:hover { border-color: var(--pt-write); background: var(--pt-write-pale); }
.prompt-panel-toggle.open { border-radius: var(--radius-md) var(--radius-md) 0 0; border-bottom-color: transparent; }
.prompt-panel-label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--pt-muted); }
.prompt-panel-chevron { font-size: var(--text-xs); color: var(--pt-muted); transition: transform 200ms ease; }
.prompt-panel-chevron.open { transform: rotate(180deg); }
.prompt-panel-body { background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-top: none; border-radius: 0 0 var(--radius-md) var(--radius-md); padding: var(--space-md); font-size: var(--text-sm); line-height: 1.8; color: var(--pt-ink); white-space: pre-wrap; display: none; margin-bottom: var(--space-md); }
.prompt-panel-body.open { display: block; }

/* ── PAUSE BANNER ── */
.pause-banner { display: none; flex-shrink: 0; background: #fff8e1; border-bottom: 2px solid #f0c040; padding: 0.75rem var(--space-lg); text-align: center; font-size: var(--text-sm); font-weight: 600; color: var(--pt-ink); }
.pause-banner.visible { display: block; }
.pause-countdown { font-family: 'DM Mono', monospace; color: var(--warning); }

/* ── SUBMITTED ── */
#screen-submitted { flex-direction: column; background: var(--pt-light); }
.submitted-header { background: var(--pt-ink); color: #fff; padding: 0.9rem var(--space-lg); flex-shrink: 0; }
.submitted-header-inner { max-width: 760px; margin: 0 auto; }
.submitted-header h1 { font-family: 'Lora', serif; font-size: var(--text-xl); font-weight: 600; }
.submitted-header h1 em { font-style: italic; color: var(--pt-write-l); }
.submitted-body { max-width: 760px; width: 100%; margin: 0 auto; padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-md); }
.submitted-badge { background: #eaf5ef; border: 1px solid #a9d9be; border-radius: var(--radius-md); padding: 0.85rem 1.1rem; color: var(--success); font-weight: 500; font-size: var(--text-sm); display: flex; align-items: center; gap: 0.5rem; }
.process-summary { background: var(--pt-surface); border: 1px solid var(--pt-border); border-radius: var(--radius-lg); padding: var(--space-md) var(--space-lg); box-shadow: var(--shadow-card); }
.process-summary h3 { font-family: 'Lora', serif; font-size: var(--text-base); font-weight: 600; color: var(--pt-ink); margin-bottom: var(--space-sm); }
.process-summary-items { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.ps-item { font-size: var(--text-sm); color: var(--pt-muted); }
.ps-item strong { color: var(--pt-ink); }
.submitted-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.submitted-label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--pt-muted); }
#submitted-essay { width: 100%; min-height: 360px; padding: 1.5rem 1.75rem; font-family: 'DM Sans', sans-serif; font-size: var(--text-base); line-height: 1.8; color: var(--pt-ink); background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); resize: none; cursor: default; }

/* ── DASHBOARD ── */
#screen-dashboard { flex-direction: column; }
.dash-header { background: var(--pt-ink); color: #fff; padding: 0 var(--space-lg); box-shadow: 0 2px 16px rgba(26,34,53,0.2); flex-shrink: 0; }
.dash-header-inner { max-width: 1300px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 0; }
.dash-brand { display: flex; align-items: center; gap: var(--space-sm); }
.dash-brand-icon { width: 32px; height: 32px; background: var(--pt-write); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; }
.dash-brand-suite { font-size: var(--text-xs); color: rgba(255,255,255,0.35); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; }
.dash-brand h1 { font-family: 'Lora', serif; font-size: var(--text-xl); font-weight: 600; color: #fff; line-height: 1.2; }
.dash-main { max-width: 1300px; margin: 0 auto; padding: var(--space-lg); width: 100%; display: grid; grid-template-columns: 340px 1fr; gap: var(--space-lg); align-items: start; }
.panel { background: var(--pt-surface); border: 1px solid var(--pt-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); overflow: hidden; }
.panel-header { background: var(--pt-ink); padding: 0.75rem var(--space-md); display: flex; align-items: center; justify-content: space-between; }
.panel-header h2 { font-family: 'Lora', serif; font-size: var(--text-base); font-weight: 600; color: #fff; }
.panel-body { padding: var(--space-md); }
.assignment-form .form-input, .assignment-form .form-select { font-size: var(--text-sm); padding: 0.5rem 0.75rem; }
.assignment-form { margin-bottom: var(--space-md); }

/* ── SEGMENTED CONTROL ── */
.seg-control { display: flex; border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); overflow: hidden; }
.seg-btn { flex: 1; padding: 0.45rem 0.5rem; font-family: 'DM Sans', sans-serif; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.04em; text-align: center; cursor: pointer; border: none; background: var(--pt-surface); color: var(--pt-muted); transition: all var(--t); border-right: 1px solid var(--pt-border); }
.seg-btn:last-child { border-right: none; }
.seg-btn.active { background: var(--pt-write); color: #fff; }
.seg-btn:hover:not(.active) { background: var(--pt-write-pale); color: var(--pt-write); }

/* ── TOGGLE ── */
.toggle-row { display: flex; align-items: center; justify-content: space-between; padding: 0.5rem 0; }
.toggle-label { font-size: var(--text-sm); color: var(--pt-ink); }
.toggle-sub { font-size: var(--text-xs); color: var(--pt-muted); }
.toggle-switch { position: relative; width: 36px; height: 20px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-track { position: absolute; inset: 0; background: var(--pt-border); border-radius: 20px; cursor: pointer; transition: background var(--t); }
.toggle-track::after { content: ''; position: absolute; width: 14px; height: 14px; background: #fff; border-radius: 50%; top: 3px; left: 3px; transition: transform var(--t); }
.toggle-switch input:checked + .toggle-track { background: var(--pt-write); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(16px); }

/* ── REALTIME LIVE VIEW ── */
.live-badge { display: inline-flex; align-items: center; gap: 0.3rem; font-size: var(--text-xs); color: var(--success); font-weight: 600; }
.live-dot { width: 6px; height: 6px; background: var(--success); border-radius: 50%; animation: pulse 1.5s infinite; }
.status-writing { color: var(--success); font-weight: 600; font-size: var(--text-xs); }
.status-away { color: var(--warning); font-weight: 600; font-size: var(--text-xs); }
.status-not-started { color: var(--pt-muted); font-size: var(--text-xs); }
.status-submitted { color: var(--pt-ink); font-size: var(--text-xs); }
.assignment-list { display: flex; flex-direction: column; gap: 0.5rem; }
.assignment-item { border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); padding: 0.7rem 0.9rem; cursor: pointer; transition: all var(--t); }
.assignment-item:hover { border-color: var(--pt-write-l); background: var(--pt-write-pale); }
.assignment-item.selected { border-color: var(--pt-write); background: var(--pt-write-pale); }
.assignment-item.active-assignment { border-color: var(--success); }
.assignment-item.archived-assignment { opacity: 0.6; }
.assignment-item.archived-assignment .assignment-item-title { color: var(--pt-muted); }
.assignment-item-title { font-weight: 600; font-size: var(--text-sm); color: var(--pt-ink); margin-bottom: 0.2rem; }
.assignment-item-meta { font-size: var(--text-xs); color: var(--pt-muted); }
.assignment-item-actions { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.6rem; }
.assignment-actions-row { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.assignment-actions-primary .btn { font-size: var(--text-sm); padding: 0.45rem 0.75rem; justify-content: center; }
.assignment-actions-secondary .btn { font-size: 0.72rem; padding: 0.3rem 0.65rem; }
.pill { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; padding: 0.18rem 0.5rem; border-radius: 20px; border: 1px solid; }
.pill-active { background: #eaf5ef; color: var(--success); border-color: #a9d9be; }
.pill-active::before { content: '●'; font-size: 0.45rem; }
.pill-inactive { background: var(--pt-light); color: var(--pt-muted); border-color: var(--pt-border); }
.empty-panel { padding: var(--space-lg); text-align: center; color: var(--pt-muted); font-size: var(--text-sm); }
.sub-toolbar { padding: 0.75rem var(--space-md); background: var(--pt-light); border-bottom: 1px solid var(--pt-border); display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap; }
.sub-count { font-size: var(--text-sm); color: var(--pt-muted); }
table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
thead { background: var(--pt-ink); color: #fff; }
thead th { padding: 0.7rem var(--space-md); text-align: left; font-weight: 500; font-size: var(--text-xs); letter-spacing: 0.07em; text-transform: uppercase; }
tbody tr { border-bottom: 1px solid var(--pt-border); transition: background var(--t); cursor: pointer; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--pt-write-pale); }
tbody td { padding: 0.7rem var(--space-md); vertical-align: middle; }
.submitted-yes { color: var(--success); font-weight: 600; font-size: var(--text-xs); }
.submitted-no  { color: var(--pt-muted); font-size: var(--text-xs); }
.detail-row { background: #f8f6fd !important; cursor: default !important; }
.detail-row:hover { background: #f8f6fd !important; }
.detail-cell { padding: var(--space-md) var(--space-lg); border-top: 2px solid var(--pt-write); }
.detail-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-md); }
.detail-essay { background: var(--pt-surface); border: 1px solid var(--pt-border); border-radius: var(--radius-md); padding: var(--space-md); font-size: var(--text-sm); line-height: 1.75; color: var(--pt-ink); white-space: pre-wrap; max-height: 280px; overflow-y: auto; margin-bottom: var(--space-md); }
.process-log-title { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--pt-muted); margin-bottom: var(--space-sm); }
.process-log-list { display: flex; flex-direction: column; gap: 0.3rem; max-height: 200px; overflow-y: auto; }
.log-entry { display: flex; align-items: baseline; gap: 0.6rem; font-size: var(--text-xs); padding: 0.35rem 0.6rem; border-radius: var(--radius-sm); background: var(--pt-light); }
.log-entry.paste        { background: #fef4e6; border-left: 3px solid #c9a84c; }
.log-entry.window_blur, .log-entry.tab_hidden { background: #fdecea; border-left: 3px solid var(--danger); }
.log-entry.window_focus { background: #eaf5ef; border-left: 3px solid var(--success); }
.log-entry.first_keystroke { background: var(--pt-write-pale); border-left: 3px solid var(--pt-write); }
.log-entry.burst        { background: #eaf5ef; border-left: 3px solid var(--success); }
.log-entry.delete_burst { background: #fff3e0; border-left: 3px solid var(--warning); }
.log-entry.word_drop    { background: #fdecea; border-left: 3px solid var(--danger); }
.log-type { font-weight: 600; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; min-width: 110px; color: var(--pt-ink); }
.log-time { color: var(--pt-muted); font-family: 'DM Mono', monospace; font-size: 0.7rem; min-width: 140px; display: flex; flex-direction: column; gap: 0.05rem; }
.log-time .log-wall { color: var(--pt-ink); font-weight: 500; }
.log-time .log-elapsed { color: var(--pt-muted); font-size: 0.65rem; }
.log-detail { color: var(--pt-ink); flex: 1; }

/* ── TOAST ── */
#toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 500; display: flex; flex-direction: column; gap: 0.5rem; }
.toast { background: var(--pt-ink); color: #fff; padding: 0.7rem 1.1rem; border-radius: var(--radius-md); font-size: var(--text-sm); box-shadow: var(--shadow-modal); display: flex; align-items: center; gap: 0.5rem; max-width: 320px; animation: slideIn 250ms ease; }
.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }
.toast.warning { background: var(--warning); }

/* ── MODAL ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(10,20,35,0.5); z-index: 300; display: flex; align-items: center; justify-content: center; padding: 1rem; opacity: 0; pointer-events: none; transition: opacity 200ms ease; }
.modal-overlay.visible { opacity: 1; pointer-events: all; }
.modal-box { background: var(--pt-surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-modal); width: 100%; max-width: 440px; transform: translateY(12px); transition: transform 200ms ease; }
.modal-overlay.visible .modal-box { transform: translateY(0); }
.modal-header { padding: var(--space-lg) var(--space-lg) 0; display: flex; justify-content: space-between; align-items: start; }
.modal-header h3 { font-family: 'Lora', serif; font-size: var(--text-xl); font-weight: 600; color: var(--pt-ink); }
.modal-close { background: none; border: none; cursor: pointer; color: var(--pt-muted); font-size: 1.3rem; padding: 0; transition: color var(--t); }
.modal-close:hover { color: var(--pt-ink); }
.modal-body { padding: var(--space-md) var(--space-lg); font-size: var(--text-sm); line-height: 1.7; color: var(--pt-ink); }
.modal-footer { padding: var(--space-sm) var(--space-lg) var(--space-lg); display: flex; gap: 0.6rem; justify-content: flex-end; }

/* ── SOURCE UPLOAD (teacher form) ── */
.sources-section { margin-top: var(--space-sm); border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); overflow: hidden; }
.sources-header { display: flex; align-items: center; justify-content: space-between; padding: 0.6rem 0.75rem; background: var(--pt-light); border-bottom: 1px solid var(--pt-border); }
.sources-header-label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: var(--pt-muted); }
.source-card { border-bottom: 1px solid var(--pt-border); background: var(--pt-surface); }
.source-card:last-child { border-bottom: none; }
.source-card-header { display: flex; align-items: center; gap: var(--space-sm); padding: 0.6rem 0.75rem; background: var(--pt-light); }
.source-drag-handle { color: var(--pt-muted); cursor: grab; font-size: 0.9rem; user-select: none; }
.source-label-input { flex: 1; padding: 0.35rem 0.6rem; border: 1.5px solid var(--pt-border); border-radius: var(--radius-sm); font-family: 'DM Sans', sans-serif; font-size: var(--text-sm); color: var(--pt-ink); background: var(--pt-surface); }
.source-label-input:focus { outline: none; border-color: var(--pt-write); box-shadow: 0 0 0 2px rgba(123,94,167,0.1); }
.source-remove-btn { background: none; border: none; color: var(--pt-muted); cursor: pointer; font-size: 1rem; padding: 0.2rem 0.4rem; border-radius: var(--radius-sm); transition: all var(--t); }
.source-remove-btn:hover { background: #fdecea; color: var(--danger); }
.source-type-tabs { display: flex; border-bottom: 1px solid var(--pt-border); }
.source-type-tab { padding: 0.4rem 0.75rem; font-size: var(--text-xs); font-weight: 600; cursor: pointer; border: none; background: none; color: var(--pt-muted); border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all var(--t); font-family: 'DM Sans', sans-serif; }
.source-type-tab.active { color: var(--pt-write); border-bottom-color: var(--pt-write); }
.source-type-tab:hover:not(.active) { color: var(--pt-ink); }
.source-body { padding: 0.6rem 0.75rem; }
.source-text-input { width: 100%; min-height: 80px; padding: 0.6rem 0.75rem; border: 1.5px solid var(--pt-border); border-radius: var(--radius-sm); font-family: 'DM Sans', sans-serif; font-size: var(--text-sm); color: var(--pt-ink); resize: vertical; }
.source-text-input:focus { outline: none; border-color: var(--pt-write); box-shadow: 0 0 0 2px rgba(123,94,167,0.1); }
.source-drop-zone { border: 2px dashed var(--pt-border); border-radius: var(--radius-md); padding: 1.25rem; text-align: center; cursor: pointer; transition: all var(--t); position: relative; }
.source-drop-zone:hover, .source-drop-zone.drag-over { border-color: var(--pt-write); background: var(--pt-write-pale); }
.source-drop-zone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.source-drop-zone-label { font-size: var(--text-sm); color: var(--pt-muted); pointer-events: none; }
.source-drop-zone-label strong { color: var(--pt-write); }
.source-file-pill { display: flex; align-items: center; gap: 0.5rem; background: var(--pt-write-pale); border: 1px solid rgba(123,94,167,0.2); border-radius: var(--radius-sm); padding: 0.4rem 0.75rem; font-size: var(--text-xs); margin-top: 0.5rem; }
.source-file-pill-name { flex: 1; color: var(--pt-ink); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.source-file-pill-size { color: var(--pt-muted); flex-shrink: 0; }
/* Google Drive import button inside source form */
.btn-drive-picker {
  display: flex; align-items: center; gap: 0.45rem;
  margin-top: 0.5rem;
  background: none; border: 1px solid var(--pt-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.7rem;
  font-size: var(--text-xs); color: var(--pt-muted);
  cursor: pointer; transition: border-color 150ms, color 150ms, background 150ms;
  font-family: var(--font-body);
}
.btn-drive-picker:hover { border-color: #4285F4; color: #4285F4; background: rgba(66,133,244,0.05); }
.source-file-remove { background: none; border: none; color: var(--pt-muted); cursor: pointer; font-size: 0.85rem; padding: 0; flex-shrink: 0; }
.source-file-remove:hover { color: var(--danger); }
.source-uploading { font-size: var(--text-xs); color: var(--pt-muted); margin-top: 0.4rem; animation: pulse 1s infinite; }

/* ── SOURCE PANEL (student writing env) ── */
.writing-split { flex: 1; display: flex; overflow: hidden; width: 100%; margin: 0; padding: var(--space-md) var(--space-lg); gap: 0; min-height: 0; height: 100%; }
.source-pane { width: 42%; min-width: 200px; display: flex; flex-direction: column; overflow: hidden; background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-radius: var(--radius-lg) 0 0 var(--radius-lg); box-shadow: var(--shadow-card); flex-shrink: 0; }
.split-resize-handle { width: 8px; background: var(--pt-border); cursor: col-resize; flex-shrink: 0; transition: background var(--t); position: relative; z-index: 10; }
.split-resize-handle::after { content: '⋮'; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); color: var(--pt-muted); font-size: 1rem; pointer-events: none; }
.split-resize-handle:hover, .split-resize-handle.dragging { background: var(--pt-write-l); }
.source-pane-header { padding: 0.6rem var(--space-md); background: var(--pt-ink); display: flex; align-items: center; justify-content: space-between; border-radius: var(--radius-lg) 0 0 0; flex-shrink: 0; }
.source-pane-header--tabs { padding: 0; overflow: hidden; gap: 0; }
.source-pane-header--tabs .source-tabs-bar { flex: 1; border-radius: var(--radius-lg) 0 0 0; min-width: 0; }
.source-pane-readonly-badge { font-size: var(--text-xs); color: rgba(255,255,255,0.35); padding: 0 0.75rem; white-space: nowrap; flex-shrink: 0; }
.source-pane-title { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.6); }
.source-pane-body { flex: 1; overflow-y: auto; padding: var(--space-md); }
.source-pane-body img { max-width: 100%; border-radius: var(--radius-sm); }
.essay-pane { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; border: 1.5px solid var(--pt-border); border-left: none; border-radius: 0 var(--radius-lg) var(--radius-lg) 0; overflow: hidden; box-shadow: var(--shadow-card); }
.essay-pane textarea { flex: 1; min-height: 0; height: 100%; border: none; border-radius: 0 var(--radius-lg) var(--radius-lg) 0; resize: none; overflow-y: auto; padding: 1.75rem 2rem; font-family: 'DM Sans', sans-serif; font-size: var(--text-lg); line-height: 1.9; color: var(--pt-ink); background: var(--pt-surface); }
.writing-tabbed { flex: 1; display: flex; flex-direction: column; max-width: 1000px; width: 100%; margin: 0 auto; padding: var(--space-md) var(--space-lg); gap: var(--space-md); }
.source-tabs-wrap { background: var(--pt-surface); border: 1.5px solid var(--pt-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); overflow: hidden; flex-shrink: 0; }
.source-tabs-bar { display: flex; background: var(--pt-ink); overflow-x: auto; scrollbar-width: none; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
.source-tabs-bar::-webkit-scrollbar { display: none; }
.source-pane-header--tabs .source-tabs-bar { border-radius: 0; }
.source-tab-btn { padding: 0.55rem 1rem; font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.05em; white-space: nowrap; cursor: pointer; border: none; background: none; color: rgba(255,255,255,0.45); border-bottom: 2px solid transparent; transition: all var(--t); font-family: 'DM Sans', sans-serif; }
.source-tab-btn.active { color: #fff; border-bottom-color: var(--pt-write-l); }
.source-tab-btn:hover:not(.active) { color: rgba(255,255,255,0.8); }
.source-tab-panel { display: none; }
.source-tab-panel.active { display: block; }
.source-tab-panel img { max-width: 100%; border-radius: var(--radius-sm); }
.source-rendered-text { font-size: var(--text-sm); line-height: 1.8; color: var(--pt-ink); white-space: pre-wrap; }
.source-rendered-html { font-size: var(--text-sm); line-height: 1.8; color: var(--pt-ink); }
.source-rendered-html p { margin-bottom: 0.75em; }
.source-rendered-html h1, .source-rendered-html h2, .source-rendered-html h3 { font-family: 'Lora', serif; margin-bottom: 0.5em; margin-top: 1em; }

/* ── ROSTER MANAGEMENT ── */
.class-item { display: flex; align-items: center; justify-content: space-between; padding: 0.6rem 0.75rem; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--t); gap: var(--space-sm); }
.class-item:hover { background: var(--pt-write-pale); }
.class-item.selected { background: var(--pt-write-pale); border-left: 3px solid var(--pt-write); padding-left: calc(0.75rem - 3px); }
.class-item-name { font-size: var(--text-sm); font-weight: 600; color: var(--pt-ink); }
.class-item-meta { font-size: var(--text-xs); color: var(--pt-muted); }
.class-item-actions { display: flex; gap: 0.25rem; opacity: 0; transition: opacity var(--t); }
.class-item:hover .class-item-actions { opacity: 1; }

.roster-toolbar { padding: 0.75rem var(--space-md); background: var(--pt-light); border-bottom: 1px solid var(--pt-border); display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.roster-add-form { display: flex; gap: 0.5rem; flex: 1; min-width: 240px; }
.roster-add-input { flex: 1; padding: 0.45rem 0.75rem; border: 1.5px solid var(--pt-border); border-radius: var(--radius-md); font-family: 'DM Sans', sans-serif; font-size: var(--text-sm); color: var(--pt-ink); }
.roster-add-input:focus { outline: none; border-color: var(--pt-write); box-shadow: 0 0 0 2px rgba(123,94,167,0.1); }

.roster-table { width: 100%; border-collapse: collapse; }
.roster-table th { padding: 0.6rem var(--space-md); text-align: left; font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; color: rgba(255,255,255,0.6); background: var(--pt-ink); }
.roster-table td { padding: 0.6rem var(--space-md); border-bottom: 1px solid var(--pt-border); font-size: var(--text-sm); vertical-align: middle; }
.roster-table tr:last-child td { border-bottom: none; }
.roster-table tr:hover td { background: var(--pt-write-pale); }
.accommodation-input { width: 70px; padding: 0.25rem 0.5rem; border: 1.5px solid var(--pt-border); border-radius: var(--radius-sm); font-family: 'DM Mono', monospace; font-size: var(--text-sm); text-align: center; color: var(--pt-ink); }
.accommodation-input:focus { outline: none; border-color: var(--pt-write); }
.accommodation-input:not(:placeholder-shown) { background: #fff8e1; border-color: #f0c040; }
.roster-remove-btn { background: none; border: none; color: var(--pt-muted); cursor: pointer; font-size: 0.85rem; padding: 0.2rem 0.4rem; border-radius: var(--radius-sm); transition: all var(--t); }
.roster-remove-btn:hover { background: #fdecea; color: var(--danger); }
.csv-hint { font-size: var(--text-xs); color: var(--pt-muted); padding: var(--space-sm) var(--space-md); border-top: 1px solid var(--pt-border); line-height: 1.6; }

@media (max-width: 700px) { #screen-roster .panel-grid { grid-template-columns: 1fr; } }
@media (max-width: 860px) { .writing-split { flex-direction: column; } .source-pane { width: 100%; max-width: 100%; max-height: 300px; } }
@media (max-width: 640px) { .landing-choices { flex-direction: column; align-items: center; } .landing-choice { width: 260px; } }