/* ClubLadder website — shares design language with TennisLedger site */

:root {
    --indigo:       #5C6BC0;
    --indigo-dark:  #3949AB;
    --indigo-light: #E8EAF6;
    --green:        #43A047;
    --orange:       #FB8C00;
    --red:          #E53935;
    --bg:           #F4F4F8;
    --bg-card:      #FFFFFF;
    --text:         #1A1A2E;
    --text-secondary: #6B6B80;
    --radius:       14px;
    --shadow:       0 2px 16px rgba(0,0,0,0.08);
    --max-w:        860px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text',
                 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

/* ── Nav ──────────────────────────────────────────────────────────── */
nav {
    background: var(--indigo-dark);
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}
nav .brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 0;
}
nav a {
    color: rgba(255,255,255,0.82);
    text-decoration: none;
    font-size: 0.9rem;
}
nav a:hover { color: #fff; }
nav .spacer { flex: 1; }
nav .admin-link {
    background: rgba(255,255,255,0.18);
    padding: 5px 14px;
    border-radius: 20px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--indigo-dark) 0%, var(--indigo) 100%);
    color: #fff;
    text-align: center;
    padding: 72px 24px 64px;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}
.hero p {
    font-size: 1.15rem;
    opacity: 0.88;
    max-width: 560px;
    margin: 0 auto 32px;
}
.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: opacity 0.15s;
}
.btn:hover { opacity: 0.88; }
.btn-primary  { background: #fff; color: var(--indigo-dark); }
.btn-outline  { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.7); }
.btn-indigo   { background: var(--indigo-dark); color: #fff; }
.btn-full     { width: 100%; text-align: center; }

/* ── Main content ─────────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

section { padding: 56px 0; }
section + section { border-top: 1px solid rgba(0,0,0,0.07); }

h2 {
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 8px;
    color: var(--indigo-dark);
}
h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
p { color: var(--text-secondary); margin-bottom: 12px; }
p:last-child { margin-bottom: 0; }

.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--indigo);
    margin-bottom: 6px;
}

/* ── Cards ────────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 20px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 32px;
}
.feature-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

/* ── Steps ────────────────────────────────────────────────────────── */
.steps { counter-reset: step; }
.step {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
    align-items: flex-start;
}
.step-num {
    counter-increment: step;
    background: var(--indigo-dark);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.step-num::before { content: counter(step); }
.step-body h3 { margin-top: 4px; }

/* ── Math block ───────────────────────────────────────────────────── */
.math {
    background: var(--indigo-light);
    border-left: 4px solid var(--indigo);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin: 16px 0;
    font-family: 'SF Mono', 'Fira Code', Menlo, monospace;
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.8;
}

.disclosure summary {
    cursor: pointer;
    color: var(--indigo);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 8px 0;
    user-select: none;
}
.disclosure summary:hover { opacity: 0.8; }
.disclosure > div { padding-top: 12px; }

/* ── Tables ───────────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th {
    background: var(--indigo-light);
    color: var(--indigo-dark);
    font-weight: 700;
    text-align: left;
    padding: 10px 14px;
}
td { padding: 10px 14px; border-bottom: 1px solid #eee; }
tr:last-child td { border-bottom: none; }

/* ── Admin area ───────────────────────────────────────────────────── */
.admin-body { background: #F0F2F5; min-height: 100vh; }
.admin-nav {
    background: var(--indigo-dark);
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 52px;
    gap: 20px;
    color: #fff;
}
.admin-nav .brand { font-weight: 700; font-size: 1rem; }
.admin-nav a { color: rgba(255,255,255,0.75); text-decoration: none; font-size: 0.875rem; }
.admin-nav a:hover { color: #fff; }
.admin-content { max-width: 1000px; margin: 32px auto; padding: 0 24px; }

.admin-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.07);
    padding: 24px;
    margin-bottom: 24px;
}
.admin-card h2 {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 16px;
}

/* Code display */
.code-display {
    font-family: 'SF Mono', 'Fira Code', Menlo, monospace;
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: 8px;
    color: var(--indigo-dark);
    text-align: center;
    padding: 24px;
    background: var(--indigo-light);
    border-radius: 10px;
    margin: 16px 0;
}

/* Forms */
label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 4px; }
input[type=text], input[type=email], input[type=file], textarea, select {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid #D1D5DB;
    border-radius: 8px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.15s;
    margin-bottom: 16px;
    font-family: inherit;
}
input:focus, textarea:focus, select:focus { border-color: var(--indigo); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 16px;
}
.alert-error { background: #FEE2E2; color: #B91C1C; }
.alert-success { background: #D1FAE5; color: #065F46; }

/* ── Footer ───────────────────────────────────────────────────────── */
footer {
    background: var(--indigo-dark);
    color: rgba(255,255,255,0.6);
    text-align: center;
    padding: 32px 24px;
    font-size: 0.85rem;
    margin-top: 40px;
}
footer a { color: rgba(255,255,255,0.75); }
footer .footer-links { display: flex; gap: 20px; justify-content: center; margin-top: 8px; }