@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=DM+Sans:wght@300;400;500&family=DM+Mono&display=swap');

:root {
    --bg:       #f6f9f4;
    --surface:  #ffffff;
    --border:   #e4ede0;
    --accent:   #5a8a5a;
    --accent2:  #c47c5a;
    --text:     #1e2a1e;
    --muted:    #7a8a7a;
    --success:  #5a8a5a;
    --error:    #c47c5a;
    --radius:   16px;
    --radius-sm: 20px;
}

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

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Navbar ── */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand {
    font-family: 'DM Serif Display', serif;
    font-size: 20px;
    color: var(--text);
    letter-spacing: -0.3px;
    text-decoration: none;
}

.brand span { color: var(--accent); }

.nav-links { display: flex; gap: 6px; }

.nav-link {
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.18s;
}

.nav-link:hover,
.nav-link.active {
    background: #eef5eb;
    color: var(--accent);
    border-color: #c8dfc8;
}

/* ── Page wrapper ── */
.page { flex: 1; padding: 40px 32px; display: flex; flex-direction: column; gap: 28px; }

/* ── Hero (home only) ── */
.hero {
    text-align: center;
    padding: 52px 32px 12px;
}

.hero h1 {
    font-family: 'DM Serif Display', serif;
    font-size: 40px;
    color: var(--text);
    letter-spacing: -1px;
    line-height: 1.15;
}

.hero h1 span { color: var(--accent); }

.hero p {
    margin-top: 10px;
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: 'DM Mono', monospace;
}

/* ── Cards grid ── */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 0 32px 32px;
}

@media (max-width: 700px) {
    .cards-grid { grid-template-columns: 1fr; padding: 0 16px 24px; }
    .navbar { padding: 14px 16px; }
    .hero { padding: 32px 16px 8px; }
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: all 0.2s;
}

.card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.card.warm:hover { border-color: var(--accent2); }

.card-num {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.card.warm .card-num { color: var(--accent2); }

.card-title {
    font-family: 'DM Serif Display', serif;
    font-size: 20px;
    color: var(--text);
    margin-bottom: 6px;
}

.card-desc {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
    flex: 1;
}

.card-tag {
    display: inline-block;
    margin-top: 16px;
    padding: 4px 14px;
    border-radius: var(--radius-sm);
    background: #eef5eb;
    color: var(--accent);
    font-size: 11px;
    font-family: 'DM Mono', monospace;
    letter-spacing: 1px;
    align-self: flex-start;
}

.card.warm .card-tag {
    background: #fdf0e8;
    color: var(--accent2);
}

/* ── Page heading ── */
.page-heading {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.page-heading h2 {
    font-family: 'DM Serif Display', serif;
    font-size: 28px;
    color: var(--text);
    letter-spacing: -0.5px;
}

.page-heading span {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ── Form card ── */
.form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-label {
    font-size: 11px;
    font-family: 'DM Mono', monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 2px;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus { border-color: var(--accent); }

input::placeholder { color: var(--muted); }

.btn-primary {
    padding: 10px 20px;
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: opacity 0.2s;
    width: 100%;
}

.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #eef5eb;
    border-color: var(--accent);
    color: var(--accent);
}

.btn-warm {
    padding: 8px 20px;
    background: var(--accent2);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-warm:hover { opacity: 0.85; }

/* ── Status messages ── */
.status {
    font-size: 13px;
    padding: 8px 14px;
    border-radius: 10px;
    min-height: 14px;
}

.status-success { background: #eef5eb; color: var(--success); }
.status-error   { background: #fdf0e8; color: var(--error); }

/* ── Stats row ── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

@media (max-width: 700px) {
    .stats-row { grid-template-columns: repeat(2, 1fr); }
}

.stat-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-val {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    color: var(--accent);
}

.stat-lbl {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--muted);
}

/* ── Table ── */
.table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead th {
    padding: 10px 20px;
    text-align: left;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
}

tbody tr { border-bottom: 1px solid var(--border); transition: background 0.15s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg); }
tbody td { padding: 12px 20px; color: var(--text); }

td.logged     { color: var(--accent); font-weight: 500; }
td.not-logged { color: var(--muted); }

.badge-logged {
    padding: 3px 12px;
    border-radius: 20px;
    background: #eef5eb;
    color: var(--accent);
    font-size: 11px;
    font-family: 'DM Mono', monospace;
}

.badge-not-logged {
    padding: 3px 12px;
    border-radius: 20px;
    background: #fdf6ed;
    color: #c4a060;
    font-size: 11px;
    font-family: 'DM Mono', monospace;
}

/* ── Classmate output cards ── */
#output {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.classmate-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 14px;
    color: var(--text);
    line-height: 1.6;
    transition: border-color 0.2s;
}

.classmate-card:hover { border-color: var(--accent); }

.empty-state {
    padding: 40px 20px;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
    font-family: 'DM Mono', monospace;
    letter-spacing: 1px;
}

/* ── Graph wrap ── */
.graph-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

#graph-output {
    padding: 16px;
    display: flex;
    justify-content: center;
}

#graph-output canvas {
    border-radius: 10px;
    max-width: 100%;
}

/* ── Progress bar ── */
.progress-wrap { display: flex; flex-direction: column; gap: 6px; }

.progress-track {
    height: 4px;
    background: var(--border);
    border-radius: 99px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 99px;
    transition: width 0.4s ease;
}

.progress-label {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 1.5px;
    color: var(--muted);
    text-transform: uppercase;
}

/* ── Photos ── */
.photo-caption {
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
    padding: 8px 20px 16px;
    border-bottom: 1px solid var(--border);
}

/* ── Status msg ── */
#status-message,
#status-msg {
    font-size: 13px;
    padding: 8px 14px;
    border-radius: 10px;
    min-height: 14px;
}

/* ── Footer ── */
.footer {
    padding: 20px 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    margin-top: auto;
}

.footer-left {
    font-family: 'DM Serif Display', serif;
    font-size: 14px;
    color: var(--muted);
}

.footer-left span { color: var(--accent); }

.footer-right {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: #a0b0a0;
    letter-spacing: 1px;
}