:root {
    --bg: #f8fafc;
    --bg-soft: #ffffff;
    --fg: #0f172a;
    --muted: #64748b;
    --accent: #6366f1;
    --accent-2: #0891b2;
    --danger: #dc2626;
    --card: #ffffff;
    --card-fg: #0f172a;
    --border: #e2e8f0;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--fg);
    min-height: 100%;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.hero {
    min-height: 100vh;
    background: radial-gradient(1200px 600px at 80% -10%, rgba(99,102,241,0.18), transparent 60%),
                radial-gradient(900px 500px at -10% 20%, rgba(8,145,178,0.12), transparent 60%),
                var(--bg);
    display: flex;
    flex-direction: column;
}

.nav {
    display: flex;
    align-items: center;
    padding: 1.25rem 2rem;
}

.brand {
    font-weight: 700;
    letter-spacing: 0.02em;
    font-size: 1.1rem;
}

.hero-inner {
    flex: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
    padding: 2rem 3rem 4rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

@media (max-width: 880px) {
    .hero-inner { grid-template-columns: 1fr; padding: 1rem 1.5rem 3rem; }
}

.badge {
    display: inline-block;
    background: rgba(99,102,241,0.1);
    color: #4338ca;
    border: 1px solid rgba(99,102,241,0.3);
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.hero-copy h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.05;
    margin: 0 0 1rem;
    background: linear-gradient(90deg, #0f172a, #4f46e5);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lede {
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1.55;
    max-width: 540px;
}

.features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
    display: grid;
    gap: 0.55rem;
}

.features li {
    color: var(--fg);
    padding-left: 1.5rem;
    position: relative;
}

.features li::before {
    content: "✓";
    color: var(--accent-2);
    position: absolute;
    left: 0;
    font-weight: 700;
}

.login-card {
    background: var(--card);
    color: var(--card-fg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 20px 40px -20px rgba(15,23,42,0.15);
}

.login-card h2 {
    margin: 0 0 1rem;
    font-size: 1.4rem;
}

.login-card label {
    display: block;
    margin-bottom: 0.9rem;
    font-size: 0.9rem;
    color: #475569;
}

.login-card label span {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.login-card input {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 1rem;
    background: #f8fafc;
    color: var(--card-fg);
}

.login-card input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
    background: #fff;
}

.login-card button {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--accent);
    color: white;
    border: 0;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: background 120ms ease;
}

.login-card button:hover { background: #4f46e5; }

.alert {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
    padding: 0.7rem 0.85rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.foot {
    padding: 1rem 2rem;
    color: var(--muted);
    text-align: center;
}

/* Dashboard */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.topbar-right .user {
    color: var(--muted);
    font-size: 0.9rem;
}

.topbar-right .logout {
    color: var(--fg);
    background: rgba(15,23,42,0.06);
    padding: 0.45rem 0.8rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.topbar-right .logout:hover {
    background: rgba(15,23,42,0.12);
    text-decoration: none;
}

.dashboard {
    padding: 3rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.dashboard h1 {
    margin: 0;
    font-size: 1.8rem;
}

.card {
    background: var(--card);
    color: var(--card-fg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem 1.75rem;
    box-shadow: 0 10px 30px -20px rgba(15,23,42,0.15);
    margin-top: 1.5rem;
}

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

.run-form {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.run-form .field { flex: 1 1 160px; }
.run-form .duration { flex: 1 1 220px; }

.run-form label {
    display: block;
    font-size: 0.85rem;
    color: #475569;
}

.run-form > label > span,
.run-form fieldset legend {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 600;
    color: #475569;
    font-size: 0.85rem;
}

.run-form input[type="date"],
.run-form input[type="number"] {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 1rem;
    background: #f8fafc;
    color: var(--card-fg);
}

.run-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
    background: #fff;
}

.run-form fieldset.duration {
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 0.45rem 0.7rem 0.6rem;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.45rem;
}

.run-form fieldset.duration legend {
    padding: 0 0.35rem;
    margin-bottom: 0;
}

.run-form fieldset.duration label {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.run-form fieldset.duration label span {
    text-align: center;
    font-weight: 500;
    color: var(--muted);
    font-size: 0.8rem;
    margin-bottom: 0.2rem;
}

.run-form fieldset.duration input {
    padding: 0.4rem 0.5rem;
    text-align: center;
}

.run-form button {
    padding: 0.7rem 1.1rem;
    background: var(--accent);
    color: white;
    border: 0;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 120ms ease;
}

.run-form button:hover { background: #4f46e5; }

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

.runs-table th,
.runs-table td {
    text-align: left;
    padding: 0.7rem 0.5rem;
    border-bottom: 1px solid var(--border);
}

.runs-table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    font-weight: 600;
}

.runs-table tr:last-child td { border-bottom: 0; }

.empty {
    color: var(--muted);
    margin: 0;
}

.muted { color: var(--muted); margin: 0.25rem 0 0; font-size: 0.9rem; }
.muted code {
    background: #f1f5f9;
    padding: 0.05rem 0.35rem;
    border-radius: 4px;
    font-size: 0.85em;
}

.flash {
    margin-top: 1.5rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}
.flash-success {
    background: #ecfdf5;
    color: #065f46;
    border-color: #a7f3d0;
}
.flash-error {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.strava-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.strava-head h2 { margin: 0; }

.strava-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.inline-form { display: inline; margin: 0; }

.btn {
    display: inline-block;
    padding: 0.55rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: 0;
    text-decoration: none;
    transition: background 120ms ease, color 120ms ease;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: #4f46e5; text-decoration: none; }
.btn-ghost {
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    background: rgba(15,23,42,0.04);
    color: var(--fg);
    text-decoration: none;
}

/* Collapsible "Add run" form */
.add-run {
    margin-top: 1.5rem;
    position: relative;
}
.add-run-summary {
    list-style: none;
    cursor: pointer;
    user-select: none;
}
.add-run-summary::-webkit-details-marker { display: none; }

.add-run:not([open]) .add-run-summary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    font-weight: 600;
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.2);
}
.add-run:not([open]) .add-run-summary:hover {
    background: rgba(99,102,241,0.14);
}
.add-run:not([open]) .add-run-close { display: none; }

.add-run[open] .add-run-trigger { display: none; }
.add-run[open] .add-run-summary {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    line-height: 1;
    color: var(--muted);
    background: rgba(15,23,42,0.04);
    padding: 0;
}
.add-run[open] .add-run-summary:hover {
    color: var(--fg);
    background: rgba(15,23,42,0.1);
}

.add-run-card {
    margin-top: 0;
}

/* Source badges in runs table */
.badge-source {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-strava {
    background: rgba(252,76,2,0.1);
    color: #b8390e;
    border: 1px solid rgba(252,76,2,0.25);
}
.badge-manual {
    background: rgba(15,23,42,0.05);
    color: var(--muted);
    border: 1px solid var(--border);
}

.thumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}
.thumb {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border);
    display: block;
    transition: transform 120ms ease;
}
.thumb:hover {
    transform: scale(1.08);
}