* {
    box-sizing: border-box;
}

:root {
    --bg: #08111c;
    --card: rgba(18, 31, 46, 0.92);
    --card2: #101d2b;
    --text: #f4f8fb;
    --muted: #8fa3b7;
    --line: rgba(255,255,255,.08);
    --yellow: #ffc928;
    --green: #4ee6a8;
    --blue: #57b7ff;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family:
        Inter,
        "Segoe UI",
        Arial,
        sans-serif;
    color: var(--text);
    background:
        radial-gradient(
            circle at 10% 0%,
            #183451 0,
            transparent 28%
        ),
        radial-gradient(
            circle at 100% 20%,
            #183328 0,
            transparent 22%
        ),
        var(--bg);
}

.app {
    width: min(1400px, calc(100% - 40px));
    margin: auto;
}

.topbar {
    min-height: 110px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
}

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

.logo {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    font-size: 30px;
    color: #111;
    background: var(--yellow);
    box-shadow:
        0 0 35px rgba(255, 201, 40, .2);
}

h1,
h2,
p {
    margin-top: 0;
}

.brand h1 {
    margin: 0;
    font-size: 25px;
}

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

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

.online {
    color: var(--green);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
}

.online span {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 7px;
    border-radius: 50%;
    background: var(--green);
    box-shadow:
        0 0 12px var(--green);
}

button {
    border: 1px solid var(--line);
    background: rgba(255,255,255,.06);
    color: white;
    border-radius: 12px;
    padding: 11px 17px;
    cursor: pointer;
    font-weight: 700;
}

button:hover {
    background: rgba(255,255,255,.1);
}

main {
    padding: 32px 0;
}

.card {
    border: 1px solid var(--line);
    background:
        linear-gradient(
            145deg,
            rgba(22,39,57,.96),
            rgba(12,23,35,.96)
        );
    border-radius: 24px;
    padding: 28px;
    box-shadow:
        0 18px 50px rgba(0,0,0,.18);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 22px;
}

.card-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.eyebrow {
    display: block;
    margin-bottom: 7px;
    color: var(--yellow);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: .15em;
}

.card h2 {
    margin-bottom: 0;
    font-size: 22px;
}

.status-pill {
    padding: 8px 12px;
    border-radius: 999px;
    color: var(--green);
    background: rgba(78,230,168,.09);
    font-size: 12px;
    font-weight: 800;
}

.battery-display {
    display: flex;
    align-items: center;
    gap: 45px;
    padding-top: 18px;
}

.gauge {
    position: relative;
    width: 220px;
    height: 220px;
    flex: 0 0 220px;
}

.gauge svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.gauge-bg,
.gauge-progress {
    fill: none;
    stroke-width: 13;
}

.gauge-bg {
    stroke: rgba(255,255,255,.07);
}

.gauge-progress {
    stroke: var(--green);
    stroke-linecap: round;
    stroke-dasharray: 565.49;
    stroke-dashoffset: 565.49;
    transition: stroke-dashoffset .8s ease;
    filter:
        drop-shadow(0 0 8px rgba(78,230,168,.4));
}

.gauge-value {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    align-content: center;
}

.gauge-value strong {
    font-size: 58px;
    line-height: 1;
}

.gauge-value > span {
    margin-top: -20px;
    color: var(--muted);
    font-size: 22px;
}

.gauge-value small {
    width: 100%;
    margin-top: 8px;
    text-align: center;
    color: var(--muted);
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .12em;
}

.battery-stats {
    flex: 1;
    display: grid;
    gap: 12px;
}

.battery-stats div {
    display: flex;
    justify-content: space-between;
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
}

.battery-stats span {
    color: var(--muted);
}

.battery-stats strong {
    font-size: 18px;
}

.recommendation-card {
    position: relative;
    overflow: hidden;
}

.recommendation-card::after {
    content: "";
    position: absolute;
    width: 250px;
    height: 250px;
    right: -100px;
    bottom: -100px;
    border-radius: 50%;
    background: rgba(255,201,40,.08);
    filter: blur(4px);
}

.brain-icon {
    margin-top: 38px;
    font-size: 45px;
}

.recommendation {
    margin-top: 12px;
    font-size: clamp(25px, 3vw, 39px);
    font-weight: 900;
    letter-spacing: -.04em;
    color: var(--green);
}

.recommendation-detail {
    max-width: 420px;
    margin-top: 9px;
    color: var(--muted);
    line-height: 1.6;
}

.tonight-action {
    position: relative;
    z-index: 1;
    max-width: 420px;
    margin: 12px 0 0;
    color: var(--yellow);
    font-weight: 700;
    line-height: 1.5;
}

.learning-note {
    position: relative;
    z-index: 1;
    max-width: 520px;
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.safety {
    display: inline-block;
    margin-top: 18px;
    padding: 9px 12px;
    border-radius: 10px;
    background: rgba(255,255,255,.05);
    color: var(--muted);
    font-size: 12px;
}

.energy-flow {
    margin-top: 22px;
}

.updated {
    color: var(--muted);
    font-size: 12px;
}

.flow {
    display: grid;
    grid-template-columns:
        1fr .3fr 1fr .3fr 1fr .3fr 1fr;
    align-items: center;
    padding-top: 30px;
}

.flow-item {
    text-align: center;
}

.flow-icon {
    width: 65px;
    height: 65px;
    margin: auto auto 10px;
    border-radius: 21px;
    display: grid;
    place-items: center;
    font-size: 28px;
    background: rgba(255,255,255,.05);
}

.flow-icon.solar {
    color: var(--yellow);
}

.flow-icon.battery {
    color: var(--green);
}

.flow-icon.grid {
    color: var(--blue);
}

.flow-item span,
.flow-item small {
    display: block;
    color: var(--muted);
}

.flow-item strong {
    display: block;
    margin: 4px 0;
    font-size: 20px;
}

.flow-line {
    height: 2px;
    position: relative;
    background:
        linear-gradient(
            90deg,
            transparent,
            rgba(78,230,168,.45),
            transparent
        );
}

.flow-line span {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -52%);
    color: var(--green);
    font-size: 22px;
}

.lower-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    margin-top: 22px;
}

.forecast-updated {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.4;
}

.forecast-nav {
    display: flex;
    gap: 8px;
}

.forecast-nav button {
    width: 42px;
    height: 42px;
    padding: 0;
    border-radius: 12px;
    font-size: 26px;
    line-height: 1;
}

.forecast-nav button:disabled {
    opacity: .35;
    cursor: default;
}

.forecast-main {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 32px 0;
}

.sun {
    font-size: 65px;
}

.forecast-main strong {
    font-size: 55px;
}

.forecast-main > div span {
    color: var(--muted);
    font-size: 20px;
}

.forecast-main p {
    margin: 3px 0 0;
    color: var(--muted);
}

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

.mini-grid div {
    padding: 14px;
    border-radius: 15px;
    background: rgba(255,255,255,.04);
}

.mini-grid span {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.mini-grid strong {
    display: block;
    margin-top: 6px;
}

.why-card > p#reason {
    min-height: 80px;
    margin-top: 30px;
    color: #c7d2dc;
    line-height: 1.7;
}

.comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 14px;
    align-items: center;
    margin-top: 20px;
}

.comparison > div:not(.versus) {
    padding: 18px;
    border-radius: 16px;
    background: rgba(255,255,255,.04);
}

.comparison span,
.comparison small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.comparison strong {
    display: block;
    margin-top: 6px;
    font-size: 21px;
}

.versus {
    color: var(--muted);
    font-size: 12px;
}

.house-use-note {
    margin: 16px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.history-card {
    margin-top: 22px;
}

.history-intro {
    margin: 18px 0 20px;
    color: var(--muted);
    line-height: 1.6;
}

.history-table {
    display: grid;
    gap: 8px;
}

#forecastHistory {
    display: grid;
    gap: 8px;
    max-height: 31.5rem;
    overflow-y: auto;
    padding-right: 6px;
    -webkit-overflow-scrolling: touch;
}

#forecastHistory::-webkit-scrollbar {
    width: 8px;
}

#forecastHistory::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.22);
    border-radius: 999px;
}

.history-row {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    gap: 10px;
    align-items: center;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255,255,255,.04);
}

.history-head {
    background: transparent;
    padding: 0 14px 4px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.history-row strong {
    font-size: 16px;
}

.history-row small {
    display: block;
    margin-top: 3px;
}

.history-over {
    color: var(--green);
}

.history-under {
    color: var(--yellow);
}

.today-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 22px;
}

.metric {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,.035);
}

.metric > span,
.metric small {
    display: block;
    color: var(--muted);
}

.metric strong {
    display: block;
    margin: 10px 0 3px;
    font-size: 25px;
}

footer {
    display: flex;
    justify-content: space-between;
    padding: 25px 0 35px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
}

@media (max-width: 900px) {

    .app {
        width: min(100% - 24px, 700px);
    }

    .topbar {
        align-items: flex-start;
        padding: 22px 0;
        gap: 20px;
    }

    .brand p {
        display: none;
    }

    .online {
        display: none;
    }

    .hero-grid,
    .lower-grid {
        grid-template-columns: 1fr;
    }

    .battery-display {
        flex-direction: column;
        gap: 10px;
    }

    .battery-stats {
        width: 100%;
    }

    .flow {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .flow-line {
        display: none;
    }

    .today-grid {
        grid-template-columns: 1fr 1fr;
    }

}

@media (max-width: 520px) {

    .card {
        padding: 21px;
        border-radius: 20px;
    }

    .logo {
        width: 45px;
        height: 45px;
        border-radius: 14px;
    }

    .brand h1 {
        font-size: 21px;
    }

    button {
        padding: 10px 12px;
    }

    .gauge {
        width: 190px;
        height: 190px;
        flex-basis: 190px;
    }

    .today-grid,
    .mini-grid {
        grid-template-columns: 1fr;
    }

    .history-row {
        grid-template-columns: 1fr 1fr;
        gap: 6px 12px;
    }

    .comparison {
        grid-template-columns: 1fr;
    }

    .versus {
        text-align: center;
    }

    footer {
        flex-direction: column;
        gap: 8px;
    }

}

/* Solar Brain v0.4 additions */

.plan-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 9px;
    margin-top: 20px;
}

.plan-grid > div {
    min-width: 0;
    padding: 13px;
    border-radius: 14px;
    background: rgba(255,255,255,.04);
}

.plan-grid span {
    display: block;
    min-height: 30px;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.35;
}

.plan-grid strong {
    display: block;
    margin-top: 5px;
    font-size: 17px;
}

.forecast-card .mini-grid {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1100px) {
    .forecast-card .mini-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plan-grid {
        grid-template-columns: 1fr;
    }

    .plan-grid span {
        min-height: 0;
    }
}

@media (max-width: 520px) {
    .forecast-card .mini-grid {
        grid-template-columns: 1fr;
    }
}

.logout-link {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: .02em;
}

.logout-link:hover {
    color: white;
}

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(420px, 100%);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 28px;
    background:
        linear-gradient(
            145deg,
            rgba(255,255,255,.06),
            rgba(255,255,255,.02)
        );
}

.login-form {
    display: grid;
    gap: 16px;
    margin-top: 28px;
}

.login-form label {
    display: grid;
    gap: 8px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.login-form input {
    border: 1px solid var(--line);
    background: rgba(0,0,0,.25);
    color: white;
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 16px;
}

.login-error {
    color: #ff8a8a;
    font-size: 14px;
    margin: 0;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    overflow-x: hidden;
}

.recommendation,
.recommendation-detail,
.login-error {
    overflow-wrap: anywhere;
}

.logout-link {
    max-width: 42vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 900px) {
    .app {
        width: auto;
        margin: 0;
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }

    .topbar {
        flex-wrap: wrap;
        min-height: 0;
        padding-top: max(16px, env(safe-area-inset-top));
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        gap: 10px;
        flex-wrap: wrap;
    }

    .logout-email {
        display: none;
    }

    .logout-link {
        max-width: none;
    }

    .forecast-main {
        flex-wrap: wrap;
        padding: 20px 0;
        gap: 12px;
    }

    .forecast-main strong {
        font-size: 42px;
    }

    .sun {
        font-size: 48px;
    }

    .recommendation {
        font-size: clamp(22px, 8vw, 34px);
    }

    .plan-grid {
        grid-template-columns: 1fr;
    }

    .forecast-card .mini-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    main {
        padding: 18px 0 28px;
    }

    .header-actions button,
    .forecast-nav button {
        min-height: 44px;
        min-width: 44px;
    }

    .gauge-value strong {
        font-size: 44px;
    }

    .forecast-card .mini-grid,
    .today-grid {
        grid-template-columns: 1fr 1fr;
    }

    .flow {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .history-head {
        display: none;
    }

    footer {
        padding-bottom: max(28px, env(safe-area-inset-bottom));
    }

    .login-body {
        padding: max(20px, env(safe-area-inset-top))
            max(16px, env(safe-area-inset-right))
            max(20px, env(safe-area-inset-bottom))
            max(16px, env(safe-area-inset-left));
        align-items: start;
    }

    .login-card {
        padding: 22px 18px;
        border-radius: 20px;
    }

    .login-form button {
        min-height: 48px;
        width: 100%;
    }
}