:root {
  --navy: #1B2A4A;
  --navy-dark: #12203a;
  --watermelon: #E23744;
  --watermelon-dark: #c72e3a;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #16213e;
  --muted: #5b6b8c;
  --border: #dbe1ee;
}

* { box-sizing: border-box; }

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

.brand-header {
  background: var(--navy);
  color: #fff;
  width: 230px;
  flex: 0 0 230px;
  min-height: 100vh;
  position: sticky;
  top: 0;
  align-self: flex-start;
  box-shadow: 2px 0 6px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem;
  box-sizing: border-box;
}

.brand-header .brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.brand-header .brand img {
  height: 40px;
  width: 40px;
  object-fit: contain;
  border-radius: 6px;
  background: #fff;
  padding: 2px;
  flex-shrink: 0;
}

.brand-header .brand span {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.brand-header nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
}

.brand-header nav a {
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.8;
  padding: 0.55rem 0.7rem;
  border-radius: 6px;
}
.brand-header nav a:hover { opacity: 1; background: rgba(255,255,255,0.08); }

.brand-header .session {
  font-size: 0.8rem;
  opacity: 0.75;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 1rem;
  margin-top: 1rem;
}
.brand-header .session a { display: inline; padding: 0; opacity: 1; text-decoration: underline; }

@media (max-width: 768px) {
  body { display: block; }
  .brand-header {
    width: 100%;
    min-height: auto;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .brand-header .brand { margin-bottom: 0; margin-right: 1rem; }
  .brand-header nav { flex-direction: row; flex-wrap: wrap; }
  .brand-header .session { border-top: none; padding-top: 0; margin-top: 0; margin-left: auto; }
}

.page-content {
  flex: 1;
  min-width: 0;
  max-width: 1100px;
  padding: 2rem 2.5rem;
}

.stat-card, .section, .result, .card {
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(20,30,60,0.08);
  border: 1px solid var(--border);
}

.section, .card { padding: 1.25rem 1.5rem; margin-bottom: 1.5rem; }
.section h2 { margin: 0 0 1rem 0; font-size: 1rem; color: var(--navy); }

.stats { display: flex; gap: 1rem; margin-bottom: 2rem; }
.stat-card { flex: 1; padding: 1.25rem 1.5rem; }
.stat-card .value { font-size: 2rem; font-weight: 800; color: var(--watermelon); }
.stat-card .label { font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; }

table { border-collapse: collapse; width: 100%; }
th, td { border: 1px solid var(--border); padding: 0.55rem 0.8rem; text-align: left; font-size: 0.9rem; }
th { background: #eef1f9; color: var(--navy); }

a.button, button {
  background: var(--watermelon);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1.2rem;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-weight: 600;
}
a.button:hover, button:hover { background: var(--watermelon-dark); }
button:disabled { background: #ccc; cursor: not-allowed; }

.quick-links a { margin-right: 0.75rem; }

.error {
  color: #7a1622;
  background: #fdecec;
  border: 1px solid #f3c6c9;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}
.success {
  color: #14532d;
  background: #edf9f0;
  border: 1px solid #c9ead1;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}
.empty { color: var(--muted); font-size: 0.9rem; }
.no-coach { color: var(--watermelon-dark); font-size: 0.85rem; }
.today { color: #15803d; font-weight: bold; }
.soon { color: #b45309; font-weight: bold; }

/* Login page */
.login-wrap {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: #fff;
  padding: 2.25rem 2.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 18px rgba(20,30,60,0.15);
  width: 320px;
  text-align: center;
}
.login-card img { height: 90px; margin-bottom: 0.75rem; }
.login-card h1 { font-size: 1.2rem; margin: 0 0 1.25rem 0; color: var(--navy); }
.login-card label { display: block; font-size: 0.85rem; margin-top: 0.75rem; text-align: left; color: var(--muted); }
.login-card input {
  width: 100%; padding: 0.55rem; margin-top: 0.25rem; box-sizing: border-box;
  border: 1px solid var(--border); border-radius: 6px;
}
.login-card button { width: 100%; margin-top: 1.5rem; padding: 0.65rem; }
.login-card .flash { color: var(--watermelon-dark); font-size: 0.85rem; margin-top: 0.85rem; }

form input[type=text] {
  padding: 0.55rem 0.8rem; border: 1px solid var(--border); border-radius: 6px; font-size: 1rem;
}