/* haushaltspilot v0.4.0 — styles.css — Full Feature: Colors, Charts, Trends */

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

:root {
  --green: #16a34a; --red: #dc2626; --blue: #2563eb; --purple: #9333ea;
  --bg: #f8fafc; --card: #ffffff; --border: #e2e8f0; --text: #1e293b;
  --muted: #64748b; --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --icon-color: #64748b; --panel-bg: #f1f5f9;
}

[data-theme="dark"] {
  --green: #22c55e; --red: #ef4444; --blue: #3b82f6; --purple: #a78bfa;
  --bg: #0f172a; --card: #1e293b; --border: #334155; --text: #e2e8f0;
  --muted: #94a3b8; --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --icon-color: #94a3b8; --panel-bg: #1a2332;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); font-size: 15px;
  line-height: 1.5; min-height: 100vh; transition: background 0.3s, color 0.3s;
}

/* ── Header ── */
header {
  position: relative; background: var(--card); border-bottom: 1px solid var(--border);
  color: var(--text); padding: 1.25rem 1rem 0.75rem; text-align: center;
}
header h1 {
  font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
}
header p { margin-top: 0.2rem; color: var(--muted); font-size: 0.85rem; }

.header-icon {
  width: 28px; height: 28px; fill: none; stroke: var(--blue);
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* ── Theme Toggle ── */
.theme-toggle {
  position: absolute; top: 1rem; right: 1rem; background: none;
  border: 1px solid var(--border); border-radius: 50%;
  width: 36px; height: 36px; display: flex; align-items: center;
  justify-content: center; cursor: pointer; transition: border-color 0.2s, transform 0.2s;
  color: var(--muted);
}
.theme-toggle:hover { border-color: var(--text); color: var(--text); transform: scale(1.08); }
.theme-toggle svg {
  width: 18px; height: 18px; fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* ── Year Chips ── */
.year-chips {
  display: flex; justify-content: center; gap: 0.4rem;
  margin-top: 0.75rem; flex-wrap: wrap;
}
.year-chip {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.8rem;
  font-weight: 600; cursor: pointer; transition: all 0.15s;
}
.year-chip:hover { border-color: var(--muted); color: var(--text); }
.year-chip.active { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ── BIP Bar ── */
.bip-bar {
  display: flex; justify-content: center; align-items: center; gap: 0.5rem;
  margin-top: 0.65rem; padding: 0.45rem 1rem; background: var(--panel-bg);
  border-radius: 8px; font-size: 0.8rem; margin-bottom: 0.25rem;
}
.bip-label { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.05em; }
.bip-bar #bip-value, .bip-bar #staatsquote { color: var(--text); font-weight: 700; }
.bip-sep { color: var(--border); }
.bip-info-btn { border: none; cursor: help; position: relative; }

/* ── Saldo Bar ── */
#saldo-bar {
  position: sticky; top: 0; z-index: 100; background: var(--card);
  border-bottom: 2px solid var(--border); padding: 0.65rem 1rem;
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem; box-shadow: var(--shadow); flex-wrap: wrap;
}
#saldo-bar .saldo-label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
#saldo-value { font-size: 1.5rem; font-weight: 800; transition: color 0.3s; }
#saldo-value.surplus { color: var(--green); }
#saldo-value.deficit { color: var(--red); }
.saldo-detail { display: flex; gap: 1.25rem; font-size: 0.82rem; color: var(--muted); }
.saldo-detail span { display: flex; align-items: center; gap: 4px; }
.saldo-detail span strong { color: var(--text); font-weight: 600; }

.inline-icon {
  width: 14px; height: 14px; fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
  vertical-align: -2px;
}

/* ── Main Tabs ── */
.main-tabs {
  display: flex; gap: 0.5rem; margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border); padding-bottom: 0.5rem;
}
.main-tab {
  display: flex; align-items: center; gap: 0.4rem; background: none;
  border: none; padding: 0.5rem 1rem; border-radius: 8px;
  font-size: 0.88rem; font-weight: 600; color: var(--muted);
  cursor: pointer; transition: all 0.15s;
}
.main-tab svg {
  width: 16px; height: 16px; fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}
.main-tab:hover { color: var(--text); background: var(--panel-bg); }
.main-tab.active { color: var(--blue); background: var(--card); box-shadow: var(--shadow); }

/* ── Views ── */
.view { display: none; }
.view.active { display: block; }
.container { max-width: 1100px; margin: 0 auto; padding: 1.25rem 1rem; }

/* ── Mobile Tabs ── */
.tabs { display: none; margin-bottom: 1rem; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); }
.tab-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.35rem;
  padding: 0.6rem; border: none; background: var(--card); cursor: pointer;
  font-weight: 600; font-size: 0.9rem; color: var(--muted); transition: background 0.15s, color 0.15s;
}
.tab-btn svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.tab-btn.active { background: var(--text); color: var(--bg); }

/* ── Columns & Panels ── */
.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); overflow: hidden; }
.panel-header {
  padding: 0.75rem 1.1rem; font-weight: 700; font-size: 0.95rem;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border); background: var(--panel-bg);
}
.panel-header .panel-total { font-size: 0.82rem; color: var(--muted); font-weight: 500; }
.panel-header .panel-total strong { color: var(--text); font-weight: 700; }
.panel-icon {
  width: 18px; height: 18px; fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; vertical-align: -3px; margin-right: 4px;
}

/* ── Item Wrapper ── */
.item-wrapper { border-bottom: 1px solid var(--border); }
.item-wrapper:last-child { border-bottom: none; }

/* ── Slider Rows ── */
.slider-row { padding: 0.55rem 1.1rem; position: relative; }
.parent-row { background: var(--bg); }
.parent-row .slider-label { font-weight: 600; }
.slider-label-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.25rem; }
.slider-label { font-size: 0.83rem; color: var(--text); font-weight: 500; display: flex; align-items: center; }
.sub-label { color: var(--muted); font-size: 0.8rem; font-weight: 400; }

/* ── Color Marker ── */
.color-marker {
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  border-radius: 0 2px 2px 0; transition: opacity 0.2s;
}
[data-panel="einnahmen"] .color-marker {
  left: auto; right: 0; border-radius: 2px 0 0 2px;
}

/* ── Toggle Icon ── */
.toggle-icon { font-size: 0.65rem; color: var(--muted); margin-right: 3px; transition: transform 0.15s; user-select: none; }

/* ── SVG Slider Icons ── */
.slider-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; margin-right: 6px; flex-shrink: 0;
}
.slider-icon svg {
  width: 16px; height: 16px; fill: none; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round; transition: stroke 0.3s;
}
.slider-row.modified .slider-icon svg { stroke: var(--purple); }

/* ── Amount & Percent ── */
.slider-amount { font-size: 0.82rem; font-weight: 700; text-align: right; color: var(--blue); white-space: nowrap; }
.slider-amount.changed { color: var(--purple); }
.pct-text { font-size: 0.72rem; color: var(--muted); font-weight: 400; margin-left: 2px; }

/* ── Percentage Bar ── */
.pct-bar { height: 18px; background: var(--border); border-radius: 4px; margin-top: 6px; overflow: hidden; }
.pct-fill { height: 100%; border-radius: 4px; transition: width 0.3s ease; min-width: 2px; }
[data-panel="einnahmen"] .pct-bar { direction: rtl; }
[data-panel="einnahmen"] .pct-fill { border-radius: 3px; }

/* ── Quellen & Methodik ── */
.quellen-box { padding: 1.5rem; max-width: 900px; margin: 0 auto; }
.quellen-box h2 { font-size: 1.3rem; margin-bottom: 1rem; color: var(--text); }
.quellen-box h3 { font-size: 1rem; margin: 1.5rem 0 0.5rem; color: var(--blue); border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; }
.quellen-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin-bottom: 1rem; }
.quellen-table th { text-align: left; font-weight: 600; padding: 0.5rem 0.6rem; border-bottom: 2px solid var(--border); color: var(--muted); }
.quellen-table td { padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.quellen-table a { color: var(--blue); text-decoration: none; }
.quellen-table a:hover { text-decoration: underline; }
.quellen-list { font-size: 0.85rem; padding-left: 1.2rem; line-height: 1.7; color: var(--text); }
.quellen-list li { margin-bottom: 0.5rem; }
.quellen-disclaimer { font-size: 0.8rem; color: var(--muted); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-top: 0.5rem; line-height: 1.6; }
.quellen-disclaimer a { color: var(--blue); }

/* ── Sub-list ── */
.sub-list { display: none; background: var(--card); border-top: 1px dashed var(--border); }
.item-wrapper.open .sub-list { display: block; }
.sub-row { padding-left: 2rem; border-bottom: 1px solid var(--border); }
.sub-row:last-child { border-bottom: none; }

/* ── Range Slider ── */
input[type="range"] {
  width: 100%; height: 5px; -webkit-appearance: none; appearance: none;
  background: var(--border); border-radius: 3px; cursor: pointer; outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 15px; height: 15px; background: var(--blue);
  border-radius: 50%; cursor: pointer; transition: transform 0.1s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
input[type="range"]::-moz-range-thumb {
  width: 15px; height: 15px; background: var(--blue); border-radius: 50%;
  cursor: pointer; border: none;
}
.slider-row.modified input[type="range"]::-webkit-slider-thumb { background: var(--purple); }
.slider-row.modified input[type="range"]::-moz-range-thumb { background: var(--purple); }
.slider-row.modified input[type="range"] { background: linear-gradient(to right, #f3e8ff, #d8b4fe); }
[data-theme="dark"] .slider-row.modified input[type="range"] { background: linear-gradient(to right, #312e81, #6366f1); }

/* ── Tooltip ── */
.tooltip-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 14px; height: 14px; background: var(--muted); color: var(--card);
  border-radius: 50%; font-size: 0.6rem; cursor: help; margin-left: 4px;
  vertical-align: middle; font-weight: 700; position: relative;
}
.tooltip-icon:hover::after {
  content: attr(data-tip); position: absolute; top: 20px; left: 0;
  background: var(--card); color: var(--text); border: 1px solid var(--border);
  padding: 0.35rem 0.65rem; border-radius: 6px; font-size: 0.75rem;
  width: 220px; z-index: 999; line-height: 1.5; white-space: normal;
  font-weight: 400; box-shadow: var(--shadow);
}

/* ── Charts ── */
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.chart-box {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.25rem; box-shadow: var(--shadow);
}
.chart-box h3 {
  font-size: 1rem; font-weight: 700; margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.chart-title-icon {
  width: 20px; height: 20px; fill: none; stroke: var(--blue);
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* Pie Chart */
.pie-svg { width: 100%; max-width: 280px; margin: 0 auto; display: block; }
.pie-seg { transition: opacity 0.15s, filter 0.15s; cursor: pointer; }
.pie-seg:hover { opacity: 1 !important; filter: brightness(1.15); }
.pie-center-label { fill: var(--muted); font-size: 11px; font-weight: 600; }
.pie-center-value { fill: var(--text); font-size: 14px; font-weight: 700; }

/* Pie Legend */
.pie-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin-top: 1rem; font-size: 0.78rem; }
.legend-item { display: flex; align-items: center; gap: 4px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.legend-line { width: 16px; height: 3px; border-radius: 2px; flex-shrink: 0; }
.legend-label { color: var(--text); }
.legend-val { color: var(--muted); font-weight: 600; }

/* ── Trend Chart ── */
.trend-tabs { display: flex; gap: 0.4rem; margin-bottom: 1rem; }
.trend-tab {
  background: none; border: 1px solid var(--border); color: var(--muted);
  padding: 0.35rem 1rem; border-radius: 20px; font-size: 0.82rem;
  font-weight: 600; cursor: pointer; transition: all 0.15s;
}
.trend-tab:hover { border-color: var(--muted); color: var(--text); }
.trend-tab.active { background: var(--blue); border-color: var(--blue); color: #fff; }

#trend-chart {
  background: var(--card); border-radius: 10px; box-shadow: var(--shadow);
  padding: 1rem; border: 1px solid var(--border); overflow-x: auto;
}
.trend-svg { width: 100%; min-width: 600px; display: block; }
.trend-line { transition: opacity 0.2s; }
.trend-dot { transition: r 0.15s; cursor: pointer; }
.trend-dot:hover { r: 5.5; }
.trend-axis-label { fill: var(--muted); font-size: 11px; font-family: inherit; }
.trend-axis-title { fill: var(--muted); font-size: 12px; font-weight: 600; font-family: inherit; }

#trend-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin-top: 1rem; font-size: 0.78rem; }

/* ── Footer ── */
footer { margin-top: 2rem; text-align: center; padding: 1rem; }
#reset-btn {
  background: var(--text); color: var(--bg); border: none;
  padding: 0.65rem 2rem; border-radius: 8px; font-size: 0.9rem;
  font-weight: 600; cursor: pointer; transition: background 0.2s, transform 0.1s;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
#reset-btn:hover { background: var(--blue); color: #fff; }
#reset-btn:active { transform: scale(0.97); }
#reset-btn .inline-icon { width: 16px; height: 16px; }
.footer-note {
  margin-top: 0.75rem; font-size: 0.75rem; color: var(--muted);
  max-width: 600px; margin-left: auto; margin-right: auto; line-height: 1.6;
}
.footer-note a { color: var(--blue); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  header h1 { font-size: 1.2rem; }
  .theme-toggle { width: 32px; height: 32px; top: 0.75rem; right: 0.75rem; }
  .theme-toggle svg { width: 15px; height: 15px; }
  .bip-bar { flex-wrap: wrap; gap: 0.4rem; font-size: 0.75rem; }
  #saldo-bar { gap: 0.75rem; padding: 0.55rem 0.75rem; }
  #saldo-value { font-size: 1.25rem; }
  .saldo-detail { display: none; }
  .main-tabs { overflow-x: auto; gap: 0.3rem; -webkit-overflow-scrolling: touch; }
  .main-tab { font-size: 0.8rem; padding: 0.4rem 0.7rem; white-space: nowrap; }
  .tabs { display: flex; }
  .columns { grid-template-columns: 1fr; }
  .panel[data-panel="einnahmen"] { display: none; }
  .panel[data-panel="ausgaben"] { display: block; }
  .columns.show-einnahmen .panel[data-panel="ausgaben"] { display: none; }
  .columns.show-einnahmen .panel[data-panel="einnahmen"] { display: block; }
  .chart-row { grid-template-columns: 1fr; }
  .year-chips { gap: 0.3rem; }
  .year-chip { padding: 0.2rem 0.55rem; font-size: 0.75rem; }
  .slider-icon { width: 16px; height: 16px; margin-right: 4px; }
  .slider-icon svg { width: 13px; height: 13px; }
}