:root {
    --green: #2e7d32;
    --green-light: #e8f5e9;
    --green-mid: #4caf50;
    --red: #c62828;
    --red-light: #ffebee;
    --amber: #e65100;
    --amber-light: #fff3e0;
    --blue: #1565c0;
    --blue-light: #e3f2fd;
    --grey: #546e7a;
    --grey-light: #f5f5f5;
    --border: #e0e0e0;
    --text: #212121;
    --text-muted: #757575;
    --radius: 8px;
    --shadow: 0 1px 4px rgba(0,0,0,0.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 15px;
    color: var(--text);
    background: #f8f9fa;
    min-height: 100vh;
}

/* ── Nav ── */
nav {
    background: var(--green);
    color: white;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.nav-brand { color: white; text-decoration: none; font-weight: 700; font-size: 1.1rem; flex: 1; }

/* Hamburger button */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-left: auto;
}
.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
}

/* Desktop nav menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}
.nav-menu a { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 0.95rem; white-space: nowrap; }
.nav-menu a:hover { color: white; }

main { max-width: 900px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }

/* ── Page header ── */
.page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.75rem; }
.page-header h1 { font-size: 1.6rem; }
.subtitle { color: var(--text-muted); margin-bottom: 1rem; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1rem;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    background: var(--green);
    color: white;
    transition: opacity 0.15s;
    white-space: nowrap;
}
.btn:hover { opacity: 0.85; }
.btn-secondary { background: white; color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--red); color: white; }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; }
.btn-full { width: 100%; margin-top: 0.5rem; }

/* ── Alerts ── */
.alert { padding: 0.85rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-weight: 500; }
.alert-danger { background: var(--red-light); color: var(--red); border: 1px solid #ef9a9a; }
.alert-success { background: var(--green-light); color: var(--green); border: 1px solid #a5d6a7; }

/* ── Session cards ── */
.session-list { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 2rem; }

.session-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    border-left: 4px solid var(--grey);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.session-card.conflict { border-left-color: var(--red); background: var(--red-light); }
.session-card.result-win { border-left-color: var(--green-mid); }
.session-card.result-loss { border-left-color: var(--red); }
.session-card.result-pending { border-left-color: #bbb; }

/* Top row: date + info */
.session-top {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.85rem 1rem;
}
.session-date { text-align: center; min-width: 44px; flex-shrink: 0; }
.date-big { display: block; font-size: 1.6rem; font-weight: 700; line-height: 1; }
.date-month { font-size: 0.75rem; color: var(--text-muted); }
.session-info { flex: 1; min-width: 0; }
.session-comp { font-weight: 600; margin-bottom: 0.25rem; }
.session-round { font-weight: 600; margin-bottom: 0.2rem; font-size: 1rem; }
.session-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; font-size: 0.85rem; color: var(--text-muted); }
.session-notes { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Bottom row: actions */
.session-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    border-top: 1px solid var(--border);
    background: #fafafa;
    flex-wrap: wrap;
}
.result-form { display: flex; gap: 0.4rem; align-items: center; flex: 1; }
.result-form select {
    flex: 1;
    min-width: 90px;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    background: white;
}
.session-btns { display: flex; gap: 0.4rem; margin-left: auto; }

/* Home page result badge */
.session-result { font-weight: 700; font-size: 0.9rem; color: var(--text-muted); min-width: 40px; text-align: right; }
.session-result.result-win { color: var(--green); }
.session-result.result-loss { color: var(--red); }

/* Status bar on comp detail */
.status-bar { margin-bottom: 1.5rem; }
.status-form { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; font-size: 0.9rem; }
.status-form select { padding: 0.4rem 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem; }

/* ── Comp grid ── */
.comp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }
.comp-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    border-top: 3px solid var(--grey);
    padding: 1rem;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    display: block;
    transition: box-shadow 0.15s;
}
.comp-card:hover { box-shadow: 0 3px 10px rgba(0,0,0,0.15); }
.comp-card.status-entered { border-top-color: var(--blue); }
.comp-card.status-in-progress { border-top-color: var(--amber); }
.comp-card.status-won { border-top-color: var(--green-mid); }
.comp-card.status-eliminated { border-top-color: var(--grey); opacity: 0.7; }
.comp-name { font-weight: 700; margin-bottom: 0.4rem; }
.comp-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; font-size: 0.82rem; }
.comp-notes { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.5rem; }

/* ── Tags ── */
.tag { background: var(--grey-light); border-radius: 4px; padding: 0.1rem 0.5rem; font-size: 0.78rem; font-weight: 500; color: var(--grey); }
.status-tag.status-entered { background: var(--blue-light); color: var(--blue); }
.status-tag.status-in-progress { background: var(--amber-light); color: var(--amber); }
.status-tag.status-won { background: var(--green-light); color: var(--green); }
.status-heading { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin: 1.25rem 0 0.5rem; }

/* ── Forms ── */
.form-card { background: white; border-radius: var(--radius); border: 1px solid var(--border); padding: 1.5rem; max-width: 520px; box-shadow: var(--shadow); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.35rem; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    color: var(--text);
    background: white;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 2px rgba(46,125,50,0.15);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

/* ── Conflict check ── */
.conflict-warning {
    margin-top: 0.5rem; padding: 0.6rem 0.75rem;
    background: var(--red-light); border: 1px solid #ef9a9a;
    border-radius: var(--radius); color: var(--red); font-size: 0.88rem;
}
.conflict-warning ul { margin: 0.3rem 0 0 1rem; }
.conflict-ok {
    margin-top: 0.5rem; padding: 0.5rem 0.75rem;
    background: var(--green-light); border: 1px solid #a5d6a7;
    border-radius: var(--radius); color: var(--green); font-size: 0.88rem;
}

/* ── Misc ── */
.notes-block { background: var(--grey-light); border-radius: var(--radius); padding: 0.75rem 1rem; margin-bottom: 1rem; color: var(--text-muted); font-size: 0.9rem; }
.danger-zone { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.empty-state { color: var(--text-muted); font-style: italic; margin: 1rem 0; }

/* ── Calendar ── */
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
.cal-header { text-align: center; font-weight: 700; font-size: 0.8rem; color: var(--text-muted); padding: 0.4rem; }
.cal-day { background: white; border: 1px solid var(--border); border-radius: 6px; min-height: 80px; padding: 0.35rem; vertical-align: top; }
.cal-day.empty { background: transparent; border-color: transparent; }
.cal-day.today { border-color: var(--green); background: var(--green-light); }
.cal-day.has-conflict { background: var(--red-light); border-color: #ef9a9a; }
.cal-day-num { font-size: 0.8rem; font-weight: 700; color: var(--text-muted); margin-bottom: 0.25rem; }
.cal-event {
    display: block; font-size: 0.72rem; padding: 0.15rem 0.35rem;
    border-radius: 3px; background: var(--green-light); color: var(--green);
    text-decoration: none; margin-bottom: 2px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500;
}
.cal-event.result-win { background: var(--green-light); color: var(--green); }
.cal-event.result-loss { background: var(--red-light); color: var(--red); }
.cal-event.result-pending { background: var(--grey-light); color: var(--grey); }
.cal-nav { display: flex; gap: 0.5rem; }

/* ── Calendar toolbar ── */
.cal-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}
.cal-title { font-size: 1.4rem; flex: 1; }

/* ── Agenda (mobile calendar) ── */
.agenda-wrap { display: none; }
.agenda-day {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.agenda-today .agenda-date-col { color: var(--green); }
.agenda-conflict { background: var(--red-light); border-radius: var(--radius); padding: 0.75rem; margin-bottom: 0.25rem; }
.agenda-date-col {
    min-width: 44px;
    text-align: center;
    flex-shrink: 0;
}
.agenda-day-num { display: block; font-size: 1.6rem; font-weight: 700; line-height: 1; }
.agenda-day-name { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; }
.agenda-events { flex: 1; display: flex; flex-direction: column; gap: 0.4rem; }
.agenda-event {
    display: block;
    background: white;
    border: 1px solid var(--border);
    border-left: 3px solid var(--grey);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    color: var(--text);
}
.agenda-event.result-win { border-left-color: var(--green-mid); }
.agenda-event.result-loss { border-left-color: var(--red); }
.agenda-event.result-pending { border-left-color: #bbb; }
.agenda-event-name { font-weight: 600; font-size: 0.95rem; }
.agenda-event-meta { display: flex; flex-wrap: wrap; gap: 0.4rem 0.75rem; font-size: 0.8rem; color: var(--text-muted); margin-top: 0.2rem; }
.result-badge { font-weight: 700; }
.result-badge.result-win { color: var(--green); }
.result-badge.result-loss { color: var(--red); }

/* ── Login ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #f8f9fa; }
.login-card { background: white; border-radius: var(--radius); border: 1px solid var(--border); padding: 2.5rem 2rem; width: 100%; max-width: 360px; box-shadow: var(--shadow); }
.login-card h1 { text-align: center; margin-bottom: 0.25rem; }
.login-sub { text-align: center; color: var(--text-muted); margin-bottom: 1.5rem; font-size: 0.9rem; }

/* ── User management ── */
.user-list { display: flex; flex-direction: column; gap: 0.6rem; }
.user-card { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 0.75rem 1rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; box-shadow: var(--shadow); }
.user-info { display: flex; align-items: center; gap: 0.6rem; }
.user-name { font-weight: 600; }
.user-actions { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.tag-admin { background: #ede7f6; color: #4527a0; }

/* ── Mobile ── */
@media (max-width: 640px) {
    /* Nav: show hamburger, hide links */
    .nav-hamburger { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 52px;
        left: 0; right: 0;
        background: var(--green);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0.5rem 0;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }
    .nav-menu.open { display: flex; }
    .nav-menu a {
        padding: 0.85rem 1.25rem;
        font-size: 1rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        color: white;
    }

    /* Forms */
    .form-row { grid-template-columns: 1fr; }
    .form-card { max-width: 100%; }

    /* Calendar: hide grid, show agenda */
    .cal-grid-wrap { display: none; }
    .agenda-wrap { display: block; }

    /* Comp grid single column */
    .comp-grid { grid-template-columns: 1fr; }

    /* Session actions stack */
    .session-actions { flex-direction: column; align-items: stretch; }
    .result-form { width: 100%; }
    .result-form select { flex: 1; }
    .session-btns { margin-left: 0; }
    .session-btns .btn, .session-btns form { flex: 1; }
    .session-btns form button { width: 100%; }
}