/* ===== Design Tokens ===== */
:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Surfaces — clean white theme */
    --bg: #f0f2f7;
    --bg-secondary: #f7f8fb;
    --surface: #ffffff;
    --surface-hover: #fafbfd;
    --surface-raised: #ffffff;
    --border: #e2e6ef;
    --border-light: #eef0f6;
    --border-accent: rgba(99,102,241,0.3);

    /* Text */
    --text-900: #111827;
    --text-700: #374151;
    --text-500: #6b7280;
    --text-400: #9ca3af;
    --text-300: #d1d5db;

    /* Accents */
    --accent: #6366f1;
    --accent-bright: #4f46e5;
    --accent-glow: rgba(99,102,241,0.12);
    --accent-light: #eef2ff;
    --accent-border: #c7d2fe;

    --green: #059669;
    --green-bright: #10b981;
    --green-light: #ecfdf5;
    --green-border: #a7f3d0;

    --amber: #d97706;
    --amber-light: #fffbeb;
    --amber-border: #fde68a;

    --rose: #e11d48;
    --rose-bright: #f43f5e;
    --rose-light: #fff1f2;
    --rose-border: #fecdd3;

    --sky: #0284c7;
    --sky-light: #f0f9ff;
    --sky-border: #bae6fd;

    --blue: #2563eb;
    --blue-bright: #3b82f6;
    --blue-light: #eff6ff;
    --blue-border: #bfdbfe;

    --teal: #0d9488;
    --purple: #7c3aed;

    /* Gradients */
    --gradient-accent: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-card: linear-gradient(135deg, rgba(99,102,241,0.02) 0%, rgba(139,92,246,0.01) 100%);
    --gradient-header: linear-gradient(180deg, rgba(99,102,241,0.04) 0%, transparent 100%);

    /* Radii */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 20px;
    --r-2xl: 24px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 20px rgba(99,102,241,0.1);
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scrollbar-width: thin;
    scrollbar-color: var(--text-300) transparent;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-700);
    min-height: 100vh;
    line-height: 1.5;
    overflow-x: hidden;
}

/* ===== App Shell ===== */
.app {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px 32px 80px;
    position: relative;
}

/* ===== Header ===== */
.app-header {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-2xl);
    padding: 28px 32px 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-header);
    pointer-events: none;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    position: relative;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: var(--r-md);
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-icon {
    font-size: 1.5rem;
    line-height: 1;
}

h1 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-900);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.header-subtitle {
    font-size: 0.82rem;
    color: var(--text-400);
    margin-top: 2px;
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: var(--green-light);
    border: 1px solid var(--green-border);
    border-radius: 100px;
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--green);
    letter-spacing: 0.08em;
}

.live-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green-bright);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.refresh-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.refresh-btn:hover { background: var(--accent-light); color: var(--accent); border-color: var(--accent-border); }
.refresh-btn.spinning svg { animation: spin 0.8s linear infinite; }

/* ===== Tabs ===== */
.tabs-row {
    margin-bottom: 12px;
    position: relative;
}

/* ===== Month Tabs ===== */
.month-tabs-row {
    margin-bottom: 20px;
    position: relative;
}

.month-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.month-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-500);
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.month-btn:hover {
    color: var(--text-700);
    border-color: var(--border-accent);
    background: var(--surface);
}

.month-btn.active {
    background: var(--accent-light);
    color: var(--accent-bright);
    border-color: var(--accent-border);
    box-shadow: var(--shadow-xs);
}

.tabs {
    display: inline-flex;
    background: var(--bg);
    border-radius: var(--r-md);
    padding: 4px;
    gap: 4px;
    border: 1px solid var(--border-light);
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--r-sm);
    border: none;
    background: transparent;
    font-family: var(--font);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-500);
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.tab-btn:hover { color: var(--text-700); }

.tab-btn.active {
    background: var(--surface);
    color: var(--accent-bright);
    box-shadow: var(--shadow-sm);
}

.tab-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.tab-dot-mozz { background: var(--accent); }
.tab-dot-jeff { background: var(--amber); }

/* ===== Stats Bar ===== */
.stats-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    position: relative;
}

.stat-chip {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--r-md);
    min-width: 140px;
    flex: 1;
    transition: all 0.2s;
}

.stat-chip:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-sm);
}

.stat-chip-icon {
    font-size: 1.3rem;
    line-height: 1;
}

.stat-chip-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-chip-label {
    font-size: 0.67rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    font-weight: 600;
    color: var(--text-400);
}

.stat-chip-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-900);
    letter-spacing: -0.02em;
}

.stat-chip-approved .stat-chip-value { color: var(--green); }
.stat-chip-rejected .stat-chip-value { color: var(--rose); }
.stat-chip-pending .stat-chip-value { color: var(--blue); }

/* ===== Filters ===== */
.filters-row {
    display: flex;
    align-items: flex-end;
    gap: 14px;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    position: relative;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 130px;
    flex: 1;
}

.filter-label {
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--text-400);
}

.filter-select,
.filter-input {
    font-family: var(--font);
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-900);
    padding: 9px 14px;
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    background: var(--surface);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    -webkit-appearance: none;
}

.filter-select {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%239ca3af' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 30px;
}

.filter-select:focus,
.filter-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.filter-input::placeholder {
    color: var(--text-400);
}

.filter-reset-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    background: var(--surface);
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-500);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    align-self: flex-end;
}
.filter-reset-btn:hover {
    background: var(--rose-light);
    color: var(--rose);
    border-color: var(--rose-border);
}

/* ===== Chart Section ===== */
.chart-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-2xl);
    padding: 28px 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.chart-title-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chart-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-900);
    letter-spacing: -0.02em;
}

.chart-subtitle {
    font-size: 0.8rem;
    color: var(--text-400);
    font-weight: 500;
}

.chart-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.chart-range-btns {
    display: inline-flex;
    background: var(--bg);
    border-radius: var(--r-sm);
    padding: 3px;
    gap: 2px;
    border: 1px solid var(--border-light);
}

.range-btn {
    padding: 7px 14px;
    border-radius: 6px;
    border: none;
    background: transparent;
    font-family: var(--font);
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-500);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.range-btn:hover {
    color: var(--text-700);
    background: var(--bg-secondary);
}

.range-btn.active {
    background: var(--accent-light);
    color: var(--accent-bright);
    box-shadow: var(--shadow-xs);
}

.chart-container {
    position: relative;
    width: 100%;
    height: 360px;
}

/* ===== Loader ===== */
.loader-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 80px 20px;
}

.loader-wrap.hidden { display: none; }

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.loader-text {
    font-size: 0.9rem;
    color: var(--text-400);
    font-weight: 500;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Cards Grid ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 16px;
}
.cards-grid.hidden { display: none; }

/* ===== Card ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    display: flex;
    flex-direction: column;
    position: relative;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

/* Red border for rejected cards */
.card.card-rejected {
    border-color: var(--rose-border);
    background: var(--rose-light);
}

.card.card-rejected::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--rose), var(--rose-bright));
    border-radius: var(--r-lg) var(--r-lg) 0 0;
}

.card.card-rejected:hover {
    border-color: var(--rose);
    box-shadow: var(--shadow-md), 0 0 20px rgba(225,29,72,0.08);
}

/* Green accent for approved cards */
.card.card-approved {
    border-color: var(--green-border);
}

.card.card-approved::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--teal));
    border-radius: var(--r-lg) var(--r-lg) 0 0;
}

/* Blue accent for pending cards */
.card.card-pending {
    border-color: var(--blue-border);
    background: var(--blue-light);
}

.card.card-pending::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue), var(--blue-bright));
    border-radius: var(--r-lg) var(--r-lg) 0 0;
}

.card.card-pending:hover {
    border-color: var(--blue);
    box-shadow: var(--shadow-md), 0 0 20px rgba(37,99,235,0.08);
}

.card-top {
    padding: 22px 24px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
}

.card-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
    border: 1px solid transparent;
}

.tag-employee { background: var(--accent-light); color: var(--accent-bright); border-color: var(--accent-border); }
.tag-geo { background: var(--rose-light); color: var(--rose); border-color: var(--rose-border); }
.tag-prepay { background: var(--green-light); color: var(--green); border-color: var(--green-border); }
.tag-approved { background: var(--green-light); color: var(--green); border-color: var(--green-border); }
.tag-rejected { background: var(--rose-light); color: var(--rose); border-color: var(--rose-border); }
.tag-pending { background: var(--blue-light); color: var(--blue); border-color: var(--blue-border); }

.card-title {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--text-900);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

/* Card data grid */
.card-data {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--border-light);
}

.data-cell {
    padding: 12px 24px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.data-cell:nth-child(odd) {
    border-right: 1px solid var(--border-light);
}

.data-cell.full-width {
    grid-column: span 2;
    border-right: none;
}

.data-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--text-400);
}

.data-value {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-900);
    word-break: break-word;
}

.data-value.muted {
    color: var(--text-300);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--r-lg);
}
.empty-state.hidden { display: none; }

.empty-icon { font-size: 2.5rem; margin-bottom: 12px; }
.empty-title { font-size: 1.15rem; font-weight: 700; color: var(--text-700); margin-bottom: 4px; }
.empty-sub { font-size: 0.88rem; color: var(--text-400); }

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--text-300);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-400);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.4s ease backwards;
}

.cards-grid .card:nth-child(1) { animation-delay: 0.02s; }
.cards-grid .card:nth-child(2) { animation-delay: 0.04s; }
.cards-grid .card:nth-child(3) { animation-delay: 0.06s; }
.cards-grid .card:nth-child(4) { animation-delay: 0.08s; }
.cards-grid .card:nth-child(5) { animation-delay: 0.10s; }
.cards-grid .card:nth-child(6) { animation-delay: 0.12s; }
.cards-grid .card:nth-child(7) { animation-delay: 0.14s; }
.cards-grid .card:nth-child(8) { animation-delay: 0.16s; }
.cards-grid .card:nth-child(9) { animation-delay: 0.18s; }
.cards-grid .card:nth-child(10) { animation-delay: 0.20s; }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
    .chart-header { flex-direction: column; }
}

@media (max-width: 900px) {
    .app { padding: 16px 16px 60px; }
    .app-header { padding: 20px; border-radius: var(--r-xl); }
    .chart-section { padding: 20px; border-radius: var(--r-xl); }
    .cards-grid { grid-template-columns: 1fr; }
    .filters-row { flex-direction: column; }
    .filter-group { min-width: 100%; }
    .stats-bar { flex-direction: column; }
    .chart-container { height: 280px; }
}

@media (max-width: 600px) {
    h1 { font-size: 1.3rem; }
    .app-header { padding: 16px; border-radius: var(--r-lg); }
    .chart-section { padding: 16px; border-radius: var(--r-lg); }
    .card-data { grid-template-columns: 1fr; }
    .data-cell:nth-child(odd) { border-right: none; }
    .chart-range-btns { flex-wrap: wrap; }
    .chart-container { height: 220px; }
}