/* ==========================================
   DESIGN TOKENS & THEMES
   ========================================== */
:root {
    --bg-color: #F8FAFC;
    --card-bg: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --chart-grid: #F1F5F9;
    --header-bg: rgba(255, 255, 255, 0.88);

    --blue: #3B82F6;
    --indigo: #6366F1;
    --green: #10B981;
    --red: #EF4444;
    --yellow: #F59E0B;
    --purple: #8B5CF6;
    --orange: #F97316;
    --cyan: #06B6D4;

    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.1), 0 2px 6px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s ease;
}

[data-theme="dark"] {
    --bg-color: #0F172A;
    --card-bg: #1E293B;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --border-color: #334155;
    --chart-grid: #334155;
    --header-bg: rgba(30, 41, 59, 0.88);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.4), 0 2px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* ==========================================
   BASE
   ========================================== */
html {
    background-color: var(--bg-color);
    transition: background-color 0.2s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 24px 32px 40px;
    transition: var(--transition);
}

#pdf-wrapper {
    padding: 10px;
    border-radius: 8px;
}

/* ==========================================
   HEADER & CONTROLS
   ========================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 14px 20px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 16px;
    z-index: 50;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header h1 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.03em;
    white-space: nowrap;
}

.controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.controls button {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.controls button:hover {
    border-color: var(--blue);
    color: var(--blue);
}

.btn-primary {
    background: var(--blue) !important;
    color: #fff !important;
    border-color: var(--blue) !important;
}

.btn-primary:hover {
    background: #2563EB !important;
    border-color: #2563EB !important;
    color: #fff !important;
}

/* ==========================================
   BUTTON GROUP
   ========================================== */
.btn-group {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.btn-group button {
    border: none;
    border-right: 1px solid var(--border-color);
    border-radius: 0;
    box-shadow: none;
}

.btn-group button:last-child {
    border-right: none;
}

.btn-group button:hover {
    box-shadow: none;
    background: var(--bg-color);
    color: var(--blue);
    border-right-color: var(--border-color);
}

/* ==========================================
   CUSTOM SELECT
   ========================================== */
.custom-select-wrapper {
    position: relative;
    width: 140px;
    user-select: none;
}

.custom-select {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.custom-select:hover {
    border-color: var(--blue);
}

.custom-select::after {
    content: "";
    border: solid var(--text-muted);
    border-width: 0 2px 2px 0;
    padding: 3px;
    transform: rotate(45deg);
    transition: 0.2s;
    flex-shrink: 0;
}

.custom-select.open::after {
    transform: rotate(-135deg) translateY(-2px);
}

.options-list {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: 0.2s;
    overflow: hidden;
}

.options-list.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.option {
    padding: 9px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: 0.15s;
}

.option:hover {
    background: var(--bg-color);
}

.option.selected {
    color: var(--blue);
    background: rgba(59, 130, 246, 0.06);
    font-weight: 500;
}

/* ==========================================
   FLATPICKR CUSTOMIZATION
   ========================================== */
.flatpickr-calendar {
    background: var(--card-bg) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-lg) !important;
    border-radius: 12px !important;
    font-family: 'Inter', sans-serif !important;
}

.flatpickr-months .flatpickr-month,
.flatpickr-current-month .flatpickr-monthhand,
.flatpickr-current-month .numInputWrapper span.arrowUp:after,
.flatpickr-current-month .numInputWrapper span.arrowDown:after {
    color: var(--text-main) !important;
    fill: var(--text-main) !important;
}

.flatpickr-monthSelect-month {
    color: var(--text-main) !important;
}

span.flatpickr-weekday {
    color: var(--text-muted) !important;
    font-weight: 600 !important;
}

.flatpickr-prev-month svg,
.flatpickr-next-month svg {
    fill: var(--text-main) !important;
}

.flatpickr-prev-month:hover svg,
.flatpickr-next-month:hover svg {
    fill: var(--blue) !important;
}

.flatpickr-day {
    color: var(--text-main) !important;
    border-radius: 8px !important;
    margin: 2px !important;
}

.flatpickr-day.prevMonthDay,
.flatpickr-day.nextMonthDay {
    color: var(--text-muted) !important;
    opacity: 0.5;
}

.flatpickr-day:hover {
    background: var(--bg-color) !important;
    border-color: var(--bg-color) !important;
}

.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange,
.flatpickr-day.selected.inRange,
.flatpickr-day.startRange.inRange,
.flatpickr-day.endRange.inRange,
.flatpickr-day.selected:focus,
.flatpickr-day.startRange:focus,
.flatpickr-day.endRange:focus,
.flatpickr-day.selected:hover,
.flatpickr-day.startRange:hover,
.flatpickr-day.endRange:hover,
.flatpickr-day.selected.prevMonthDay,
.flatpickr-day.startRange.prevMonthDay,
.flatpickr-day.endRange.prevMonthDay,
.flatpickr-day.selected.nextMonthDay,
.flatpickr-day.startRange.nextMonthDay,
.flatpickr-day.endRange.nextMonthDay {
    background: var(--blue) !important;
    border-color: var(--blue) !important;
    color: #fff !important;
}

.flatpickr-day.inRange {
    background: rgba(59, 130, 246, 0.1) !important;
    border-color: transparent !important;
    box-shadow: none !important;
}

/* ==========================================
   KPI CARDS
   ========================================== */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

/* KPI value colors via data-accent */
.card[data-accent="blue"]   .kpi-value { color: var(--blue); }
.card[data-accent="green"]  .kpi-value { color: var(--green); }
.card[data-accent="red"]    .kpi-value { color: var(--red); }
.card[data-accent="indigo"] .kpi-value { color: var(--indigo); }
.card[data-accent="purple"] .kpi-value { color: var(--purple); }
.card[data-accent="orange"] .kpi-value { color: var(--orange); }
.card[data-accent="cyan"]   .kpi-value { color: var(--cyan); }
.card[data-accent="muted"]  .kpi-value { color: var(--text-muted); }

/* KPI card hover lift */
.kpi-row .card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.kpi-title {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.kpi-value {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1;
    letter-spacing: -0.02em;
}

.kpi-trend {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    background: rgba(100, 116, 139, 0.08);
    color: var(--text-muted);
}

.positive { color: var(--green); }
.negative { color: var(--red); }

.kpi-trend.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--green);
}

.kpi-trend.negative {
    background: rgba(239, 68, 68, 0.1);
    color: var(--red);
}

/* ==========================================
   CHARTS
   ========================================== */
.charts-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.chart-card {
    min-height: 400px;
}

.full-width {
    grid-column: 1 / -1;
}

.chart-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

.chart-title::after {
    content: '';
    display: block;
    width: 36px;
    height: 3px;
    background: var(--accent, var(--blue));
    border-radius: 2px;
    margin-top: 8px;
}

canvas {
    width: 100% !important;
    height: 300px !important;
}

.no-print {
    display: flex;
}

@media print {
    .no-print { display: none; }
}

/* ==========================================
   LOGIN PAGE
   ========================================== */
.login-body {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #EEF2FF 0%, #F8FAFC 60%, #ECFDF5 100%);
}

[data-theme="dark"] .login-body {
    background: linear-gradient(135deg, #1e1b4b 0%, #0F172A 60%, #064e3b 100%);
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-lg);
}

.login-title {
    margin: 0 0 8px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.login-subtitle {
    margin: 0 0 28px;
    font-size: 14px;
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
    box-sizing: border-box;
}

.form-group input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.login-error {
    font-size: 13px;
    color: var(--red);
    margin-bottom: 14px;
    padding: 10px 14px;
    background: rgba(239, 68, 68, 0.08);
    border-radius: 8px;
    border-left: 3px solid var(--red);
}

.btn-full {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
    font-size: 15px;
    padding: 12px 16px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}