/* ============================================================
   GANTT CHART CALCULATOR — style.css
   Primary: #6A0BE4 | Dark: #5a09c4 | Light: #f0ebff | Lightest: #f7f4ff
   ============================================================ */

:root {
  --p: #6A0BE4;
  --p-h: #5a09c4;
  --p-lt: #f0ebff;
  --p-llt: #f7f4ff;
  --success: #10b981;
  --warn: #f59e0b;
  --danger: #ef4444;
  --text: #0f0a1e;
  --text-2: #4b4b6a;
  --text-3: #8888aa;
  --border: #e4e4f0;
  --bg: #ffffff;
  --bg-2: #f8f8fc;
  --shadow-sm: 0 1px 3px rgba(15,10,30,.06);
  --shadow-md: 0 4px 20px rgba(106,11,228,.10), 0 1px 4px rgba(15,10,30,.06);
  --shadow-lg: 0 8px 40px rgba(106,11,228,.14);
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 18px;
  --font: 'Inter', sans-serif;
  --ease: cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 15px; }
body { font-family: var(--font); color: var(--text); background: var(--bg-2); line-height: 1.6; }
a { text-decoration: none; color: inherit; }

/* ── PURPLE GRADIENT BANNER ── */
#hero-banner {
  background: linear-gradient(135deg, #6A0BE4 0%, #5a09c4 50%, #3d0694 100%);
  padding: 52px 24px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
#hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 130%, rgba(255,255,255,.12) 0%, transparent 60%);
  pointer-events: none;
}
#hero-banner::after {
  content: '';
  position: absolute;
  top: -80px; left: -80px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  pointer-events: none;
}
.banner-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}
.banner-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.9);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
}
#hero-banner h1 {
  font-size: clamp(22px, 3.2vw, 38px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -.5px;
  line-height: 1.1;
  margin-bottom: 14px;
}
#hero-banner h1 em { font-style: normal; color: #c4b5fd; }
#hero-banner p {
  font-size: 15px;
  color: rgba(255,255,255,.72);
  max-width: 520px;
  margin: 0 auto;
}

/* ── CENTERED CONTAINER ── */
#page-wrap {
  max-width: 940px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

/* ── CARDS ── */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: 20px;
}
.card-header {
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-header-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  background: var(--p-lt);
  color: var(--p);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.card-header-icon svg { width: 18px; height: 18px; }
.card-header-text h2 { font-size: 16px; font-weight: 700; color: var(--text); }
.card-header-text p { font-size: 12px; color: var(--text-3); }
.card-body { padding: 20px 24px 24px; }

/* ── PROJECT SETTINGS (Row layout) ── */
#project-settings .card-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.settings-row {
  display: grid;
  gap: 14px;
}
.settings-row.cols-2 { grid-template-columns: 1fr 1fr; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 5px;
}
.form-group label span {
  font-size: 10px;
  background: var(--p-lt);
  color: var(--p);
  padding: 1px 7px;
  border-radius: 10px;
  font-weight: 700;
  letter-spacing: .3px;
}
input[type="text"],
input[type="date"] {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 13.5px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
input[type="text"]:focus,
input[type="date"]:focus {
  border-color: var(--p);
  box-shadow: 0 0 0 3px rgba(106,11,228,.1);
}
input::placeholder { color: var(--text-3); font-weight: 400; }

/* Working days toggles */
.toggle-group {
  display: flex;
  gap: 6px;
}
.toggle-btn {
  padding: 8px 20px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  background: var(--bg);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  transition: all .18s var(--ease);
}
.toggle-btn:hover { border-color: var(--p); color: var(--p); background: var(--p-llt); }
.toggle-btn.active {
  background: var(--p);
  border-color: var(--p);
  color: #fff;
  box-shadow: 0 2px 10px rgba(106,11,228,.3);
}
.toggle-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
  display: block;
}

/* ── ADD TASK PANEL ── */
#add-task-row {
  display: grid;
  grid-template-columns: 1fr 140px auto;
  gap: 10px;
  align-items: flex-end;
  margin-top: 6px;
  padding: 16px;
  background: var(--p-llt);
  border: 1px dashed var(--p-lt);
  border-radius: var(--r-md);
}
#add-task-row .form-group { margin: 0; }
#add-task-row input[type="number"] {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 13.5px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
#add-task-row input[type="number"]:focus {
  border-color: var(--p);
  box-shadow: 0 0 0 3px rgba(106,11,228,.1);
}
#add-task-btn {
  padding: 9px 20px;
  border: none;
  border-radius: var(--r-sm);
  background: var(--p);
  color: #fff;
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background .18s, transform .15s;
  box-shadow: 0 2px 10px rgba(106,11,228,.3);
}
#add-task-btn:hover { background: var(--p-h); }
#add-task-btn:active { transform: scale(.96); }

/* ── TASK LIST ── */
#task-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.task-row {
  display: grid;
  grid-template-columns: 22px 1fr auto auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color .18s, box-shadow .18s;
}
.task-row:hover { border-color: var(--p-lt); box-shadow: 0 2px 8px rgba(106,11,228,.08); }
.task-num {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--p);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.task-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.task-dur {
  font-size: 12px;
  font-weight: 700;
  color: var(--p);
  background: var(--p-llt);
  padding: 2px 9px;
  border-radius: 10px;
  white-space: nowrap;
}
.task-dates {
  font-size: 11px;
  color: var(--text-3);
  white-space: nowrap;
  text-align: right;
}
.task-del {
  width: 26px; height: 26px;
  border: none;
  border-radius: 50%;
  background: #fef2f2;
  color: var(--danger);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .18s, transform .15s;
}
.task-del:hover { background: var(--danger); color: #fff; transform: scale(1.1); }
.no-tasks {
  text-align: center;
  padding: 24px;
  color: var(--text-3);
  font-size: 13px;
  border: 1px dashed var(--border);
  border-radius: var(--r-md);
}

/* ── RESULTS SECTION ── */
#results-section {
  background: var(--p-llt);
  border: 1px solid var(--p-lt);
  border-radius: var(--r-xl);
  overflow: hidden;
  margin-bottom: 20px;
  display: none;
}
#results-section.visible { display: block; }
.results-header {
  background: var(--p);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.results-header h2 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
#export-btn {
  padding: 7px 18px;
  border: 1.5px solid rgba(255,255,255,.5);
  border-radius: 20px;
  background: transparent;
  color: #fff;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s;
}
#export-btn:hover { background: rgba(255,255,255,.15); border-color: #fff; }

/* Summary row */
.summary-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--p-lt);
  border-bottom: 1px solid var(--p-lt);
}
.summary-tile {
  background: #fff;
  padding: 16px 18px;
  text-align: center;
}
.summary-tile-label {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-3);
  margin-bottom: 4px;
}
.summary-tile-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--p);
  letter-spacing: -.5px;
  line-height: 1.1;
}
.summary-tile-sub { font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* Gantt chart container */
#gantt-wrap {
  padding: 20px 20px 16px;
  overflow-x: auto;
}
#gantt-wrap h3 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 14px;
}

.gantt-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

/* Timeline header */
.gantt-timeline-row td {
  padding: 0;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-align: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}
.gantt-timeline-row .name-col { text-align: left; color: var(--text-3); font-size: 11px; padding-left: 2px; }

/* Task rows */
.gantt-row td { padding: 5px 0; }
.gantt-name-col {
  width: 160px;
  min-width: 140px;
  padding-right: 12px !important;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}
.gantt-bar-col { position: relative; }
.gantt-track {
  position: relative;
  height: 28px;
  background: var(--bg-2);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.gantt-bar {
  position: absolute;
  height: 100%;
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  overflow: hidden;
  transition: opacity .2s;
  cursor: default;
}
.gantt-bar:hover { opacity: .85; }
.gantt-bar-label {
  font-size: 10.5px;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

/* Gantt color palette — purple shades */
.gantt-color-0  { background: linear-gradient(90deg, #6A0BE4, #8b2ff7); }
.gantt-color-1  { background: linear-gradient(90deg, #5a09c4, #7a24d9); }
.gantt-color-2  { background: linear-gradient(90deg, #7c3aed, #9f67f5); }
.gantt-color-3  { background: linear-gradient(90deg, #4c05a8, #6A0BE4); }
.gantt-color-4  { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.gantt-color-5  { background: linear-gradient(90deg, #6d28d9, #8b5cf6); }
.gantt-color-6  { background: linear-gradient(90deg, #3d0694, #5a09c4); }
.gantt-color-7  { background: linear-gradient(90deg, #a855f7, #c084fc); }

/* Tooltip on hover */
.gantt-bar[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  font-size: 10.5px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

/* Week markers on gantt track */
.gantt-grid-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
  pointer-events: none;
}

/* ── CONTENT SECTION ── */
#content-section {
  max-width: 940px;
  margin: 0 auto;
  padding: 0 20px 80px;
}
.content-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 36px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.content-card h2 { font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 14px; letter-spacing: -.3px; }
.content-card p { font-size: 14.5px; color: var(--text-2); line-height: 1.75; margin-bottom: 12px; }
.content-card p:last-child { margin-bottom: 0; }
.content-card ul, .content-card ol { padding-left: 1.4em; }
.content-card li { font-size: 14.5px; color: var(--text-2); line-height: 1.75; margin-bottom: 6px; }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 20px;
}
.step-box {
  background: var(--p-llt);
  border: 1px solid var(--p-lt);
  border-radius: var(--r-md);
  padding: 16px;
  position: relative;
}
.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--p);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}
.step-box h4 { font-size: 13px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.step-box p { font-size: 12px; color: var(--text-2); line-height: 1.6; margin: 0; }

/* FAQ accordion */
.faq-list { margin-top: 8px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 15px 18px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background .18s;
}
.faq-q:hover { background: var(--p-llt); }
.faq-icon {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--p-lt);
  color: var(--p);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  transition: transform .25s var(--ease), background .2s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--p); color: #fff; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease), padding .25s;
  padding: 0 18px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.75;
}
.faq-item.open .faq-a { max-height: 400px; padding: 0 18px 16px; }

/* ── PRINT STYLES ── */
@media print {
  body > *:not(#page-wrap):not(#content-section) { display: none !important; }
  #page-wrap > *:not(#results-section) { display: none !important; }
  #results-section { display: block !important; }
  #export-btn { display: none !important; }
  .card { display: none !important; }
  #content-section { display: none !important; }
}

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  #hero-banner { padding: 36px 16px 40px; }
  #page-wrap { padding: 20px 14px 48px; }
  .settings-row.cols-2 { grid-template-columns: 1fr; }
  #add-task-row { grid-template-columns: 1fr 1fr; }
  #add-task-row .form-group:first-child { grid-column: 1 / -1; }
  .summary-row { grid-template-columns: 1fr 1fr; }
  .task-row { grid-template-columns: 22px 1fr auto auto; }
  .task-dates { display: none; }
  .content-card { padding: 22px 16px; }
}
@media (max-width: 420px) {
  .summary-row { grid-template-columns: 1fr 1fr; }
  #add-task-row { grid-template-columns: 1fr; }
}