:root {
    --bg: #f2f6f5;
    --bg-alt: #e8efec;
    --surface: #ffffff;
    --surface-alt: #f8fbfa;
    --surface-glass: rgba(255, 255, 255, 0.88);
    --ink: #142025;
    --muted: #5a6b71;
    --line: #d5e0dc;
    --primary: #0a8f72;
    --primary-ink: #ffffff;
    --warn: #a35a00;
    --danger: #b3261e;
    --radius: 14px;
    --shadow: 0 16px 34px rgba(18, 38, 42, 0.08);
}

:root[data-theme="dark"] {
    --bg: #0f171b;
    --bg-alt: #131f24;
    --surface: #17242b;
    --surface-alt: #1d2c34;
    --surface-glass: rgba(23, 36, 43, 0.88);
    --ink: #e7f1f5;
    --muted: #9db2bc;
    --line: #2b3c45;
    --primary: #3ac597;
    --primary-ink: #082019;
    --warn: #ffb15b;
    --danger: #ff8a82;
    --shadow: 0 18px 36px rgba(0, 0, 0, 0.34);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

:root[data-theme="dark"] body {
    background: radial-gradient(1200px 650px at 88% -20%, rgba(24, 90, 74, 0.45) 0%, transparent 58%),
                radial-gradient(900px 550px at -15% 8%, rgba(19, 55, 79, 0.42) 0%, transparent 60%),
                linear-gradient(165deg, var(--bg) 0%, var(--bg-alt) 100%);
}

body {
    min-height: 100vh;
    font-family: "Manrope", sans-serif;
    color: var(--ink);
    background: radial-gradient(1100px 550px at 80% -10%, #c4efe3 0%, transparent 58%),
                radial-gradient(900px 520px at -10% 8%, #d4e8f9 0%, transparent 60%),
                linear-gradient(165deg, var(--bg) 0%, var(--bg-alt) 100%);
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 18px;
}

.app-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(0, 0, 0, 0.02) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.45;
}

:root[data-theme="dark"] .app-bg {
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    opacity: 0.4;
}

.site-header,
.main-shell,
.site-footer {
    position: relative;
    z-index: 1;
}

.site-header {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    background: var(--surface-glass);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    border-radius: calc(var(--radius) + 8px);
    padding: 14px 18px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 14px;
    backdrop-filter: blur(8px);
}

.brand {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.brand-title {
    color: var(--ink);
    font-weight: 800;
    letter-spacing: 0.4px;
}

.brand-sub {
    color: var(--muted);
    font-size: 0.82rem;
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.nav-link {
    text-decoration: none;
    color: var(--muted);
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 8px 13px;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.nav-link:hover {
    color: var(--ink);
    border-color: var(--line);
    background: var(--surface-alt);
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chip {
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 0.8rem;
    padding: 7px 11px;
    color: var(--muted);
    background: var(--surface-alt);
}

.main-shell {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    background: linear-gradient(110deg, #0a8f72, #14699e);
    color: #ffffff;
    border-radius: calc(var(--radius) + 8px);
    padding: 20px 22px;
    box-shadow: var(--shadow);
    animation: rise 420ms ease;
}

.hero h1 {
    margin: 0;
    font-size: 1.35rem;
}

.hero p {
    margin: 6px 0 0;
    opacity: 0.92;
}

.status-badge {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.16);
    padding: 8px 12px;
    border-radius: 999px;
    font-weight: 700;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    border-radius: calc(var(--radius) + 6px);
    padding: 16px;
    animation: rise 420ms ease;
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.card-head h2 {
    margin: 0;
    font-size: 1.1rem;
}

.card-head p,
.muted {
    margin: 4px 0 0;
    color: var(--muted);
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.kpi-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: rise 420ms ease;
}

.kpi-card h2 {
    margin: 0;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kpi-value {
    margin: 0;
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: 0.3px;
}

.kpi-meta {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
}

.unit {
    font-size: 1rem;
    color: var(--muted);
}

.hint {
    display: inline-flex;
    width: 18px;
    height: 18px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.72rem;
    font-family: "DM Mono", monospace;
    color: var(--primary-ink);
    background: var(--primary);
    cursor: help;
}

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

.controls-inline label {
    font-size: 0.86rem;
    color: var(--muted);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.controls-inline .inline-check {
    flex-direction: row;
    align-items: center;
    margin-top: 18px;
    gap: 6px;
}

label input,
label select,
.form-inline input,
.form-grid input {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 9px 10px;
    font: inherit;
    background: var(--surface);
    color: var(--ink);
}

button,
.btn {
    border: 1px solid transparent;
    background: var(--primary);
    color: var(--primary-ink);
    font: inherit;
    padding: 9px 14px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
}

.btn:hover {
    filter: brightness(1.03);
}

.btn-ghost {
    background: var(--surface-alt);
    border-color: var(--line);
    color: var(--ink);
}

.theme-toggle {
    min-width: 78px;
}

.btn-danger {
    background: #ffe6e4;
    border-color: #efc8c3;
    color: var(--danger);
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
}

.form-grid {
    display: grid;
    gap: 10px;
}

.form-grid label {
    display: grid;
    gap: 4px;
    color: var(--muted);
    font-size: 0.9rem;
}

.form-grid hr {
    width: 100%;
    border: 0;
    border-top: 1px solid var(--line);
    margin: 6px 0;
}

.form-grid h3 {
    margin: 2px 0 0;
    font-size: 0.98rem;
}

.form-inline {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr)) auto;
    gap: 8px;
    margin-bottom: 12px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.checkbox {
    display: flex !important;
    align-items: center;
    gap: 8px;
}

.inverter-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.inverter-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
    background: var(--surface);
}

.inverter-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
}

.inverter-title {
    margin: 0;
    font-size: 1rem;
}

.pill {
    display: inline-block;
    border-radius: 999px;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 700;
}

.pill-online {
    background: #ddf7ee;
    color: #0f6d54;
}

.pill-offline {
    background: #ffe8e6;
    color: #94342d;
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.panel-card {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 8px;
    background: var(--surface-alt);
}

.panel-card h4 {
    margin: 0 0 6px;
    font-size: 0.86rem;
}

.log-box {
    background: #0b0f10;
    border-radius: 12px;
    border: 1px solid var(--line);
    padding: 12px;
    color: #b8f5e3;
    font-family: "DM Mono", monospace;
    font-size: 0.85rem;
    max-height: 55vh;
    overflow-y: auto;
    white-space: pre-wrap;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.stat-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px;
    background: var(--surface-alt);
}

.stat-card strong {
    display: block;
    font-size: 1.1rem;
}

.panel-metrics {
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
    font-size: 0.8rem;
    color: var(--muted);
}

.weather-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.chart-box {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
    background: var(--surface-alt);
}

.chart-box h3 {
    margin: 0 0 8px;
    font-size: 0.95rem;
}

.weather-card {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 8px;
    background: var(--surface-alt);
}

.weather-card h4 {
    margin: 0 0 6px;
    font-size: 0.88rem;
}

.weather-icon {
    margin: 0 0 2px;
    font-size: 1.45rem;
    line-height: 1;
}

.weather-condition {
    margin: 0 0 6px;
    font-weight: 700;
    color: var(--ink);
}

.flash-stack {
    display: grid;
    gap: 8px;
}

.flash {
    border-radius: 10px;
    padding: 10px 12px;
    font-weight: 600;
}

.flash-success {
    background: #ddf7ee;
    color: #0f6d54;
}

.flash-error {
    background: #ffe8e6;
    color: #94342d;
}

.auth-wrap {
    max-width: 480px;
    margin: 8vh auto 0;
}

.auth-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 8px);
    box-shadow: var(--shadow);
    padding: 18px;
}

.auth-card h1 {
    margin: 0;
}

.auth-card p {
    color: var(--muted);
}

.table-wrap {
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    text-align: left;
    padding: 10px;
    border-bottom: 1px solid var(--line);
}

.site-footer {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.84rem;
}

:root[data-theme="dark"] .flash-success {
    background: #133d31;
    color: #9ff4d2;
}

:root[data-theme="dark"] .flash-error {
    background: #452422;
    color: #ffb4af;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .kpi-grid,
    .settings-grid,
    .inverter-grid,
    .weather-grid,
    .chart-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-header {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .main-nav,
    .user-actions {
        justify-content: flex-start;
    }

    .form-inline {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    body {
        padding: 10px;
    }

    .kpi-grid,
    .settings-grid,
    .inverter-grid,
    .weather-grid,
    .panel-grid,
    .chart-grid {
        grid-template-columns: 1fr;
    }

    .controls-inline {
        flex-wrap: wrap;
        width: 100%;
    }

    .hero {
        flex-direction: column;
    }

    .site-footer {
        flex-direction: column;
        gap: 4px;
    }
}