@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
  --sidebar-width: 200px;
  --sidebar-collapsed-width: 60px;
  --header-height: 56px;
  --bg: #1f2235;
  --card: #2c2f4a;
  --text: #ffffff;
  --text-muted: #a0aec0;
  --primary: #6c63ff;
  --accent: #00c9a7;
  --danger: #f87171;
  --border: #3d3d5c;
  --kpi-bg: #252535;
  --card-shadow: rgba(0,0,0,0.25);
}

.light-theme {
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --primary: #4f46e5;
  --accent: #14b8a6;
  --danger: #ef4444;
  --border: #d1d5db;
  --kpi-bg: #f9fafb;
  --card-shadow: rgba(0,0,0,0.05);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

/* === SIDEBAR === */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  z-index: 999;
  background-color: var(--card);
  overflow-y: auto;
  padding-top: 0;
  border-right: 1px solid var(--border);
  transition: width 0.3s;
}
.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}
.sidebar ul {
  list-style: none;
  padding: 0;
}
.sidebar ul li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s;
}
.sidebar ul li a:hover {
  background-color: rgba(255,255,255,0.05);
}
.sidebar.collapsed ul li a span {
  display: none;
}
.sidebar-toggle-btn {
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  position: absolute;
  top: 10px;
  right: 12px;
  cursor: pointer;
}

/* === HEADER === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: var(--header-height);
  z-index: 1000;
  background-color: var(--card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-logo {
  height: 36px;
  max-width: 120px;
  object-fit: contain;
}
.header-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.logout-link {
  color: var(--danger);
  font-weight: 600;
  text-decoration: none;
}
.logout-link:hover {
  color: #ffaaaa;
}
#theme-toggle {
  background: var(--primary);
  color: #fff;
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}
#theme-toggle:hover {
  background-color: var(--accent);
}

/* === MAIN CONTENT === */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 32px 24px;
  min-height: calc(100vh - var(--header-height));
  background: var(--bg);
  width: 100%;
  max-width: 1200px;
  margin-right: auto;
  box-sizing: border-box;
  transition: margin-left 0.3s;
}
.main-content.collapsed {
  margin-left: var(--sidebar-collapsed-width);
}

/* === FILTER CARD === */
.filter-card {
  background: var(--card);
  padding: 30px 32px 24px 32px;
  border-radius: 18px;
  margin-bottom: 38px;
  max-width: 100%;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  box-shadow: 0 4px 12px var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: padding 0.2s, border-radius 0.2s;
}
.filter-card form {
  width: 100%;
  display: flex;
  gap: 24px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.filter-card label {
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: block;
  min-width: 80px;
}
.filter-card select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 180px;
  font-size: 16px;
}
.filter-card button,
.filter-card .ai-export-btn {
  width: 100%;
  margin-top: 12px;
  padding: 13px 0;
  font-size: 18px;
  border-radius: 8px;
}

/* === KPI CARD === */
.kpi-wrapper {
  display: flex;
  gap: 16px;
  margin-bottom: 26px;
  width: 100%;
}
.kpi-card {
  background: #23243a;
  border-radius: 16px;
  flex: 1;
  padding: 10px 8px;
  font-size: 14px;
  text-align: center;
  box-shadow: 0 1px 6px #10102c30;
  min-width: 160px;
  max-width: 220px;
}
.kpi-card strong {
  font-size: 17px;
}

/* === CHART WRAPPER === */
.dashboard-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  width: 100%;
}

/* === CHART CARD === */
.chart-card {
  background-color: var(--card);
  border-radius: 12px;
  box-shadow: 0 6px 18px var(--card-shadow);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  height: 400px;
}
.chart-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
}
.chart-card.cashflow-wide {
  grid-column: 1 / -1;
  height: 460px;
}

canvas {
  flex: 1;
  width: 100% !important;
  height: 100% !important;
}

/* === MINI WIDGET === */
.mini-widget {
  background: #23243a;
  border-radius: 16px;
  margin-top: 28px;
  padding: 16px 20px;
}

/* === RESPONSIVE BREAKPOINTS === */

/* 1100px ve altı */
@media (max-width: 1100px) {
  .main-content {
    margin-left: 0 !important;
    max-width: 99vw;
    padding: 17px 2vw 0 2vw;
  }
  .dashboard-wrapper { grid-template-columns: 1fr; }
  .filter-card { max-width: 99vw; }
}

/* 900px ve altı */
@media (max-width: 900px) {
  .main-content {
    margin-left: 0 !important;
    max-width: 100vw;
    padding: 10px 5vw;
  }
  .sidebar, .sidebar.collapsed {
    position: static !important;
    width: 100vw !important;
    height: auto;
    border-radius: 0 0 12px 12px;
  }
  .filter-card,
  .kpi-wrapper,
  .dashboard-wrapper {
    max-width: 100vw;
  }
  .kpi-wrapper { flex-direction: column; gap: 10px; }
  .kpi-card { min-width: 0; max-width: 100%; margin-bottom: 0; }
}

/* 600px ve altı */
@media (max-width: 600px) {
  .main-content {
    margin-left: 0 !important;
    padding: 8px 2vw !important;
    max-width: 100vw !important;
  }
  .filter-card, .kpi-wrapper, .dashboard-wrapper {
    max-width: 100vw;
    margin: 0 0 18px 0;
    border-radius: 12px;
    padding-left: 3vw !important;
    padding-right: 3vw !important;
  }
  .chart-card, .mini-widget {
    min-width: 0 !important;
    padding: 8px 3vw !important;
  }
  .filter-card {
    padding: 12px 4vw 9px 4vw !important;
    border-radius: 10px !important;
    margin: 0 0 12px 0;
  }
  .header {
    flex-direction: column;
    align-items: flex-start;
    height: auto;
    padding: 10px 3vw !important;
    min-height: unset;
    gap: 4px;
  }
  .header-title {
    font-size: 15px !important;
    margin-top: 3px;
  }
  .header-logo {
    height: 28px !important;
    max-width: 85px !important;
  }
  .header-right {
    font-size: 13px !important;
    gap: 5px !important;
    margin-top: 4px;
  }
}