/* ================================================================
   DeliveryIQ — SaaS Dashboard with Dark Mode
   Wide functional sidebar, dual theme, Inter font
   ================================================================ */

/* ── Light Theme Tokens ── */
:root, [data-theme="light"] {
    --bg:         #f3f4f8;
    --surface:    #ffffff;
    --surface-2:  #f8f9fb;
    --border:     #e8eaef;
    --border-h:   #d1d5de;
    --text:       #1a1d26;
    --text-2:     #5f6577;
    --text-3:     #9ca3b4;
    --accent:     #e74c3c;
    --accent-hover:#d63a2a;
    --accent-bg:  rgba(231, 76, 60, 0.08);
    --accent-bg2: rgba(231, 76, 60, 0.15);
    --green:      #10b981;
    --green-bg:   rgba(16, 185, 129, 0.1);
    --blue:       #3b82f6;
    --blue-bg:    rgba(59, 130, 246, 0.1);
    --amber:      #f59e0b;
    --amber-bg:   rgba(245, 158, 11, 0.1);
    --purple:     #8b5cf6;
    --purple-bg:  rgba(139, 92, 246, 0.1);
    --teal:       #14b8a6;
    --teal-bg:    rgba(20, 184, 166, 0.1);
    --red-bg:     rgba(231, 76, 60, 0.08);
    --shadow:     0 1px 3px rgba(0,0,0,0.04), 0 4px 14px rgba(0,0,0,0.04);
    --shadow-lg:  0 4px 24px rgba(0,0,0,0.08);
    --sidebar-bg: #ffffff;
    --sidebar-hover: #f3f4f8;
    --chart-grid: rgba(0,0,0,0.04);
    --chart-border:rgba(0,0,0,0.06);
    --tooltip-bg: #ffffff;
    --tooltip-text:#1a1d26;
    --tooltip-text2:#5f6577;
    --tooltip-border:#e8eaef;
}

/* ── Dark Theme Tokens ── */
[data-theme="dark"] {
    --bg:         #0f1117;
    --surface:    #181b25;
    --surface-2:  #1e2130;
    --border:     rgba(255,255,255,0.07);
    --border-h:   rgba(255,255,255,0.14);
    --text:       #e4e7ef;
    --text-2:     #8b92a5;
    --text-3:     #555d73;
    --accent:     #ef5350;
    --accent-hover:#f44336;
    --accent-bg:  rgba(239, 83, 80, 0.12);
    --accent-bg2: rgba(239, 83, 80, 0.22);
    --green:      #34d399;
    --green-bg:   rgba(52, 211, 153, 0.12);
    --blue:       #60a5fa;
    --blue-bg:    rgba(96, 165, 250, 0.12);
    --amber:      #fbbf24;
    --amber-bg:   rgba(251, 191, 36, 0.12);
    --purple:     #a78bfa;
    --purple-bg:  rgba(167, 139, 250, 0.12);
    --teal:       #2dd4bf;
    --teal-bg:    rgba(45, 212, 191, 0.12);
    --red-bg:     rgba(239, 83, 80, 0.1);
    --shadow:     0 1px 3px rgba(0,0,0,0.18), 0 4px 14px rgba(0,0,0,0.12);
    --shadow-lg:  0 4px 24px rgba(0,0,0,0.25);
    --sidebar-bg: #14161f;
    --sidebar-hover: #1c1f2e;
    --chart-grid: rgba(255,255,255,0.04);
    --chart-border:rgba(255,255,255,0.06);
    --tooltip-bg: #1e2130;
    --tooltip-text:#e4e7ef;
    --tooltip-text2:#8b92a5;
    --tooltip-border:rgba(255,255,255,0.08);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg); color: var(--text);
    line-height: 1.5; min-height: 100vh; display: flex;
    -webkit-font-smoothing: antialiased;
    transition: background 0.35s, color 0.35s;
}

/* ================================================================
   SIDEBAR — Big SaaS style (280px)
   ================================================================ */
.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0;
    width: 280px; background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    z-index: 100; overflow-y: auto;
    transition: transform 0.3s ease, background 0.35s;
}

/* Brand */
.sb-brand {
    display: flex; align-items: center; gap: 12px;
    padding: 20px 22px;
    border-bottom: 1px solid var(--border);
}
.sb-brand-text { display: flex; flex-direction: column; }
.sb-brand-name { font-size: 1.1rem; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.sb-brand-sub { font-size: 0.65rem; color: var(--text-3); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }

/* Section Labels */
.sb-section-label {
    padding: 18px 22px 8px;
    font-size: 0.62rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--text-3);
}

/* Nav Items */
.sb-nav { padding: 0 12px; display: flex; flex-direction: column; gap: 3px; }
.sb-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; border-radius: 10px;
    text-decoration: none; color: var(--text-2);
    transition: all 0.2s ease;
}
.sb-item:hover { background: var(--sidebar-hover); color: var(--text); }
.sb-icon {
    width: 38px; height: 38px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface-2); transition: all 0.2s;
    flex-shrink: 0;
}
.sb-item:hover .sb-icon { background: var(--accent-bg); }
.sb-item:hover .sb-icon svg { stroke: var(--accent); }
.sb-item-text { display: flex; flex-direction: column; min-width: 0; }
.sb-item-title { font-size: 0.85rem; font-weight: 600; line-height: 1.3; }
.sb-item-desc { font-size: 0.68rem; color: var(--text-3); line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sb-item.active {
    background: var(--accent-bg2); color: var(--accent);
}
.sb-item.active .sb-icon { background: var(--accent); }
.sb-item.active .sb-icon svg { stroke: #fff; }
.sb-item.active .sb-item-title { color: var(--accent); }
.sb-item.active .sb-item-desc { color: var(--accent); opacity: 0.7; }

/* Sidebar Filters */
.sb-filters { padding: 4px 18px 10px; display: flex; flex-direction: column; gap: 8px; }
.sb-filter { display: flex; flex-direction: column; gap: 3px; }
.sb-filter label { font-size: 0.68rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.04em; }
.sb-filter select {
    appearance: none; -webkit-appearance: none;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text); font-family: inherit;
    font-size: 0.8rem; font-weight: 500;
    padding: 8px 30px 8px 12px; border-radius: 8px;
    cursor: pointer; outline: none;
    transition: border-color 0.2s;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M1.5 3.5L5 7L8.5 3.5' fill='none' stroke='%239ca3b4' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center;
}
.sb-filter select:focus { border-color: var(--accent); }
.sb-filter select option { background: var(--surface); color: var(--text); }

.sb-reset {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    background: transparent; border: 1px dashed var(--border);
    color: var(--text-3); font-family: inherit;
    font-size: 0.75rem; font-weight: 500;
    padding: 8px; border-radius: 8px; cursor: pointer;
    transition: all 0.2s;
    margin-top: 2px;
}
.sb-reset:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-bg); }

/* Bottom */
.sb-bottom {
    margin-top: auto;
    padding: 12px 18px 16px;
    border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 12px;
}
.sb-theme-toggle {
    display: flex; align-items: center; gap: 10px;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text-2); font-family: inherit;
    font-size: 0.8rem; font-weight: 500;
    padding: 10px 14px; border-radius: 10px;
    cursor: pointer; transition: all 0.2s;
}
.sb-theme-toggle:hover { background: var(--sidebar-hover); color: var(--text); border-color: var(--border-h); }
.theme-label { flex: 1; }
[data-theme="light"] .theme-icon-dark { display: none; }
[data-theme="dark"]  .theme-icon-light { display: none; }

.sb-profile {
    display: flex; align-items: center; gap: 10px;
    padding: 4px 0;
}
.sb-avatar {
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--accent); color: #fff;
    font-weight: 700; font-size: 0.82rem;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.sb-profile-info { display: flex; flex-direction: column; }
.sb-profile-name { font-size: 0.8rem; font-weight: 600; color: var(--text); }
.sb-profile-role { font-size: 0.65rem; color: var(--text-3); }

/* ================================================================
   MAIN AREA
   ================================================================ */
.main-wrap {
    margin-left: 280px; flex: 1;
    display: flex; flex-direction: column; min-height: 100vh;
    transition: margin-left 0.3s;
}

/* Top Bar */
.topbar {
    position: sticky; top: 0; z-index: 50;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 0 32px; height: 64px;
    display: flex; align-items: center; justify-content: space-between;
    transition: background 0.35s;
}
.topbar-left { display: flex; align-items: center; gap: 14px; }
.hamburger {
    display: none; background: none; border: none;
    color: var(--text-2); cursor: pointer; padding: 4px;
}
.topbar-title-group { display: flex; flex-direction: column; }
.page-title { font-size: 1.25rem; font-weight: 800; color: var(--text); letter-spacing: -0.02em; line-height: 1.2; }
.page-subtitle { font-size: 0.72rem; color: var(--text-3); font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.status-badge {
    display: flex; align-items: center; gap: 8px;
    background: var(--green-bg); padding: 6px 14px;
    border-radius: 100px; font-size: 0.78rem; font-weight: 600;
    color: var(--green);
}
.status-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--green);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1}50%{opacity:0.4} }

/* Content */
.page-content {
    display: none; flex-direction: column; gap: 20px;
    padding: 28px 32px 48px;
    flex: 1;
}
.page-content.active { display: flex; }

/* ================================================================
   KPI ROW
   ================================================================ */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.kpi {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; padding: 20px 22px;
    box-shadow: var(--shadow);
    transition: transform 0.22s, box-shadow 0.22s, background 0.35s;
    animation: fadeUp 0.35s ease-out both;
    position: relative; overflow: hidden;
}
.kpi::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; border-radius: 14px 14px 0 0;
}
.kpi[data-accent="red"]::before    { background: var(--accent); }
.kpi[data-accent="amber"]::before  { background: var(--amber); }
.kpi[data-accent="green"]::before  { background: var(--green); }
.kpi[data-accent="blue"]::before   { background: var(--blue); }
.kpi[data-accent="purple"]::before { background: var(--purple); }
.kpi[data-accent="teal"]::before   { background: var(--teal); }
.kpi:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.kpi-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.kpi-label { font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-3); }
.kpi-badge { font-size: 1.1rem; }
.kpi-val { font-size: 2rem; font-weight: 800; letter-spacing: -0.03em; }
.kpi[data-accent="red"] .kpi-val    { color: var(--accent); }
.kpi[data-accent="amber"] .kpi-val  { color: var(--amber); }
.kpi[data-accent="green"] .kpi-val  { color: var(--green); }
.kpi[data-accent="blue"] .kpi-val   { color: var(--blue); }
.kpi[data-accent="purple"] .kpi-val { color: var(--purple); }
.kpi[data-accent="teal"] .kpi-val   { color: var(--teal); }
.kpi-sub { font-size: 0.7rem; color: var(--text-3); margin-top: 4px; }

/* ================================================================
   CARDS
   ================================================================ */
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; box-shadow: var(--shadow);
    overflow: hidden;
    transition: box-shadow 0.22s, background 0.35s;
    animation: fadeUp 0.4s ease-out both;
}
.card:hover { box-shadow: var(--shadow-lg); }
.card-header { padding: 20px 24px 0; }
.card-header h2 { font-size: 1rem; font-weight: 700; color: var(--text); }
.card-header p  { font-size: 0.72rem; color: var(--text-3); margin-top: 2px; }
.card-chart { padding: 12px 18px 18px; }
.card-chart canvas { width: 100% !important; height: 300px !important; }
.card-chart--sm canvas { height: 270px !important; }
.card-chart--tall canvas { height: 380px !important; }

/* Stats grid */
.stats-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 12px; padding: 16px 24px 24px;
}
.stat-item {
    background: var(--surface-2); border-radius: 10px;
    padding: 14px 16px; text-align: center;
}
.stat-val { font-size: 1.3rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.68rem; color: var(--text-3); margin-top: 2px; }

/* Table */
.table-wrap { padding: 4px 20px 20px; overflow-x: auto; }
.rest-table {
    width: 100%; border-collapse: collapse;
    font-size: 0.78rem;
}
.rest-table th {
    text-align: left; padding: 10px 12px;
    font-weight: 600; color: var(--text-3);
    font-size: 0.68rem; text-transform: uppercase;
    letter-spacing: 0.05em; border-bottom: 2px solid var(--border);
}
.rest-table td {
    padding: 10px 12px; border-bottom: 1px solid var(--border);
    color: var(--text);
}
.rest-table tbody tr:hover { background: var(--surface-2); }

/* ================================================================
   GRID LAYOUTS
   ================================================================ */
.grid-2-1 { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; }
.grid-1-1 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-full { display: grid; grid-template-columns: 1fr; gap: 20px; }

/* Footer */
.main-footer {
    padding: 20px 32px; text-align: center;
    border-top: 1px solid var(--border);
    transition: border-color 0.35s;
}
.main-footer p { font-size: 0.7rem; color: var(--text-3); }

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

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1100px) {
    .kpi-row { grid-template-columns: repeat(2, 1fr); }
    .grid-2-1, .grid-1-1 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); box-shadow: 8px 0 32px rgba(0,0,0,0.15); }
    .main-wrap { margin-left: 0; }
    .hamburger { display: flex; }
    .page-content { padding: 20px 16px; }
    .topbar { padding: 0 16px; }
}
@media (max-width: 520px) {
    .kpi-row { grid-template-columns: 1fr; }
}

/* ================================================================
   SIDEBAR BADGES (AI / NEW)
   ================================================================ */
.sb-badge {
    margin-left: auto; font-size: 0.6rem; font-weight: 700;
    letter-spacing: 0.05em; padding: 2px 8px; border-radius: 6px;
    background: var(--purple-bg); color: var(--purple);
    text-transform: uppercase;
}
.sb-badge.new { background: var(--green-bg); color: var(--green); }

/* ================================================================
   EXPORT BUTTON
   ================================================================ */
.sb-export-btn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text-2); font-family: inherit;
    font-size: 0.78rem; font-weight: 500;
    padding: 10px 14px; border-radius: 10px;
    cursor: pointer; transition: all 0.2s;
}
.sb-export-btn:hover { background: var(--green-bg); color: var(--green); border-color: var(--green); }

/* ================================================================
   ML PREDICTION FORM
   ================================================================ */
.predict-form { padding: 20px 24px 24px; display: flex; flex-direction: column; gap: 16px; }
.pf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pf-field { display: flex; flex-direction: column; gap: 6px; }
.pf-field label { font-size: 0.72rem; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.04em; }
.pf-field input[type="range"] {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 6px; border-radius: 3px;
    background: var(--border); outline: none;
    transition: background 0.2s;
}
.pf-field input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent); cursor: pointer;
    border: 3px solid var(--surface);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}
.pf-field select {
    appearance: none; background: var(--surface-2);
    border: 1px solid var(--border); color: var(--text);
    font-family: inherit; font-size: 0.82rem; font-weight: 500;
    padding: 10px 14px; border-radius: 8px; cursor: pointer; outline: none;
}
.pf-val {
    font-size: 0.82rem; font-weight: 700; color: var(--accent);
    text-align: right;
}
.predict-btn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--accent); border: none; color: #fff;
    font-family: inherit; font-size: 0.88rem; font-weight: 700;
    padding: 14px 28px; border-radius: 12px; cursor: pointer;
    transition: all 0.25s;
    box-shadow: 0 4px 16px rgba(231,76,60,0.3);
}
.predict-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 6px 22px rgba(231,76,60,0.4); }

/* Prediction Result */
.predict-result { padding: 24px; text-align: center; }
.pr-placeholder { color: var(--text-3); font-size: 0.85rem; padding: 40px 20px; }
.pr-value { font-size: 3.2rem; font-weight: 800; letter-spacing: -0.03em; margin: 12px 0 4px; }
.pr-value.positive { color: var(--green); }
.pr-value.negative { color: var(--accent); }
.pr-label { font-size: 0.82rem; color: var(--text-3); margin-bottom: 16px; }
.pr-category { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; border-radius: 100px; font-size: 0.78rem; font-weight: 600; }
.pr-category.early { background: var(--green-bg); color: var(--green); }
.pr-category.ontime { background: var(--blue-bg); color: var(--blue); }
.pr-category.slight { background: var(--amber-bg); color: var(--amber); }
.pr-category.heavy { background: var(--red-bg); color: var(--accent); }

.pr-details { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; padding: 0 12px; }
.pr-detail { background: var(--surface-2); border-radius: 10px; padding: 12px; text-align: center; }
.pr-detail-val { font-size: 1.1rem; font-weight: 700; color: var(--text); }
.pr-detail-label { font-size: 0.65rem; color: var(--text-3); margin-top: 2px; }

.model-meta { padding: 14px 24px 20px; border-top: 1px solid var(--border); }
.model-meta-row { display: flex; gap: 16px; flex-wrap: wrap; }
.model-meta-item { font-size: 0.7rem; color: var(--text-3); }
.model-meta-item strong { color: var(--text-2); }

/* ================================================================
   INSIGHTS GRID
   ================================================================ */
.insights-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}
.insight-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; padding: 20px 22px;
    box-shadow: var(--shadow);
    display: flex; gap: 14px; align-items: flex-start;
    animation: fadeUp 0.4s ease-out both;
    transition: transform 0.2s, box-shadow 0.2s;
}
.insight-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.insight-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; flex-shrink: 0;
}
.insight-card.success .insight-icon { background: var(--green-bg); }
.insight-card.warning .insight-icon { background: var(--amber-bg); }
.insight-card.danger .insight-icon  { background: var(--red-bg); }
.insight-card.info .insight-icon    { background: var(--blue-bg); }
.insight-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.insight-title { font-size: 0.82rem; font-weight: 700; color: var(--text); }
.insight-text { font-size: 0.75rem; color: var(--text-2); line-height: 1.5; }
.insight-card.success { border-left: 3px solid var(--green); }
.insight-card.warning { border-left: 3px solid var(--amber); }
.insight-card.danger  { border-left: 3px solid var(--accent); }
.insight-card.info    { border-left: 3px solid var(--blue); }

/* ================================================================
   TOAST NOTIFICATIONS
   ================================================================ */
.toast-container {
    position: fixed; bottom: 24px; right: 24px;
    z-index: 1000; display: flex; flex-direction: column-reverse;
    gap: 10px;
}
.toast {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; padding: 14px 20px;
    box-shadow: var(--shadow-lg);
    display: flex; align-items: center; gap: 10px;
    animation: toastIn 0.35s ease-out;
    min-width: 280px; max-width: 400px;
    font-size: 0.82rem; color: var(--text);
}
.toast.success { border-left: 4px solid var(--green); }
.toast.error { border-left: 4px solid var(--accent); }
.toast.info { border-left: 4px solid var(--blue); }
.toast-icon { font-size: 1.1rem; }
.toast-text { flex: 1; }
.toast-close {
    background: none; border: none; color: var(--text-3);
    cursor: pointer; font-size: 1.1rem; padding: 2px;
}
@keyframes toastIn {
    from { opacity: 0; transform: translateY(16px) scale(0.95); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to   { opacity: 0; transform: translateY(16px); }
}

/* ================================================================
   LEAFLET MAP OVERRIDES
   ================================================================ */
.card--map { overflow: hidden; }
[data-theme="dark"] .leaflet-tile { filter: brightness(0.7) contrast(1.2) saturate(0.85); }
[data-theme="dark"] .leaflet-control-zoom a { background: var(--surface); color: var(--text); border-color: var(--border); }
[data-theme="dark"] .leaflet-popup-content-wrapper { background: var(--surface); color: var(--text); }
[data-theme="dark"] .leaflet-popup-tip { background: var(--surface); }