/* MyYearlyStatistics – mobile-first, app-like UI */

:root {
    --bg: #0f0f0f;
    --surface: #1a1a1a;
    --text: #f0f0f0;
    --muted: #888;
    /* Strava brand guidelines: orange #FC5200 (developers.strava.com/guidelines) */
    --strava: #fc5200;
    --strava-hover: #e04a00;
    --border: #2a2a2a;
    --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    min-height: 100dvh;
    line-height: 1.4;
}

/* ----- Login ----- */
.page-login {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 1.5rem;
    box-sizing: border-box;
}

.login-card {
    max-width: 360px;
    width: 100%;
    text-align: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--strava);
    margin-bottom: 0.25rem;
}

.tagline {
    color: var(--muted);
    font-size: 0.95rem;
    margin: 0 0 1.5rem;
}

.login-hint {
    margin: 0 0 1.5rem;
    color: var(--text);
    font-size: 1rem;
}

.btn-strava {
    display: inline-block;
    -webkit-tap-highlight-color: transparent;
    border-radius: 4px;
}

/* Do not filter/animate the official Connect-with-Strava image (Strava brand guidelines §2). */
.btn-strava:hover,
.btn-strava:focus,
.btn-strava:focus-visible {
    outline: 2px solid rgba(252, 82, 0, 0.45);
    outline-offset: 3px;
}

.btn-strava img {
    display: block;
    height: 48px;
    width: auto;
}

/* Strava API compliance footer (guidelines §1.2, §4) */
.strava-compliance-footer {
    margin: 2rem 1.25rem 0;
    padding: 1rem 0 1.5rem;
    border-top: 1px solid var(--border);
}

.page-login .strava-compliance-footer {
    margin: 2.5rem auto 0;
    max-width: 420px;
    width: 100%;
    border-top: none;
    padding-top: 0;
}

.strava-compliance-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.45;
}

.strava-compliance-headline {
    margin: 0 0 0.5rem;
    font-size: 0.85rem;
}

.strava-app-name {
    font-weight: 700;
    color: var(--text);
}

.strava-interop {
    font-weight: 400;
    color: var(--muted);
}

.strava-compliance-disclaimer {
    margin: 0.5rem 0 0;
}

/* §3: links to Strava resources — bold / underline / #FC5200 */
.strava-official-link {
    color: #fc5200;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.strava-official-link:hover {
    color: var(--strava-hover);
}

/* ----- Dashboard ----- */
.page-dashboard {
    padding: 0 0 2rem;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header .logo {
    font-size: 1.35rem;
}

.header-left {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.header-link {
    color: var(--muted);
    font-size: 0.9rem;
    text-decoration: none;
}

.header-link:hover {
    color: var(--text);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.btn-icon-reload {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem;
    margin: 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.btn-icon-reload:hover,
.btn-icon-reload:focus-visible {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
    outline: none;
}

.btn-icon-reload svg {
    display: block;
}

.btn-logout {
    color: var(--muted);
    font-size: 0.9rem;
    text-decoration: none;
}

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

.filter-bar {
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-bar label {
    color: var(--muted);
    font-size: 0.9rem;
}

.filter-bar select {
    flex: 1;
    min-width: 160px;
    max-width: 220px;
    padding: 0.5rem 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font: inherit;
}

@media (max-width: 520px) {
    .header {
        padding: 0.75rem 1rem;
    }

    .header .logo {
        font-size: 1.05rem;
        letter-spacing: -0.02em;
    }

    .filter-bar {
        padding: 0.5rem 1rem 0.75rem;
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }

    .filter-bar label {
        display: none;
    }

    .filter-bar select {
        max-width: 50%;
        width: 50%;
    }

    .chart-wrap {
        height: 180px;
    }
}

.charts {
    padding: 0 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.chart-card {
    background: radial-gradient(circle at top left, #252525, #151515);
    border-radius: 16px;
    padding: 1.25rem;
    border: 1px solid rgba(255,255,255,0.04);
    box-shadow: 0 18px 45px rgba(0,0,0,0.45);
}

.chart-card h2 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.chart-card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
}

.metric-badge {
    font-size: 0.75rem;
    padding: 0.1rem 0.6rem;
    border-radius: 999px;
    background: rgba(252, 82, 0, 0.12);
    color: var(--strava);
    border: 1px solid rgba(252, 82, 0, 0.35);
}

.chart-wrap {
    position: relative;
    height: 200px;
}

.chart-legend {
    margin: 0 1.25rem 1.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    font-size: 0.8rem;
    color: var(--muted);
}

.chart-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.chart-legend-item strong {
    color: var(--text);
    font-weight: 600;
}

@media (min-width: 600px) {
    .chart-wrap {
        height: 260px;
    }
}

/* ----- Lade-Overlay mit Animation ----- */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(15, 15, 15, 0.92);
    color: var(--muted);
    transition: opacity 0.2s ease;
}

.loading-overlay[hidden] {
    display: none !important;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--strava);
    border-radius: 50%;
    animation: loading-spin 0.9s linear infinite;
}

.loading-text {
    font-size: 0.95rem;
}

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

.error {
    text-align: center;
    padding: 1.5rem;
    color: #e55;
}

.error[hidden] {
    display: none !important;
}

/* Safe area for notched devices */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .page-dashboard {
        padding-bottom: calc(2rem + env(safe-area-inset-bottom));
    }
}

/* ----- About / Impressum ----- */
.page-about {
    display: flex;
    justify-content: center;
    padding: 2rem 1.5rem 3rem;
}

.about-card {
    max-width: 720px;
    width: 100%;
}

.about-header h1 {
    margin: 0;
    font-size: 2rem;
    letter-spacing: -0.02em;
    color: var(--strava);
}

.about-header-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
}

.about-header .tagline {
    margin-top: 0.35rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.about-section {
    margin-top: 1.75rem;
    font-size: 0.95rem;
}

.about-section h2 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
}

.about-section ul {
    margin: 0.5rem 0 0.5rem 1.1rem;
    padding: 0;
}

.about-section li {
    margin-bottom: 0.25rem;
}

.about-section a.strava-official-link {
    color: #fc5200;
}

.about-section a:not(.strava-official-link) {
    color: var(--strava);
}

.about-nav {
    margin-top: 2rem;
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.about-link {
    color: var(--strava);
    font-size: 0.9rem;
    text-decoration: none;
}

.about-link:hover {
    text-decoration: underline;
}