/* ============================================================
   Pattern Field — style.css
   Behavioral observation interface.
   Calm. Neutral. Analytical. Minimal.
   ============================================================ */

/* ── Reset & Base ── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #0e0f11;
    --surface: #161719;
    --surface-2: #1d1f22;
    --border: #2a2c30;
    --border-soft: #222427;

    --text-primary: #d4d5d7;
    --text-secondary: #717478;
    --text-muted: #5a5f66;
    --text-accent: #9aa0a6;

    --dot-1: #c8cace;
    /* intentional — bright */
    --dot-0: #252729;
    /* none — recessed */
    --dot-miss: #1a1c1e;
    /* missing — near-invisible */

    --font-mono: "JetBrains Mono", "Fira Mono", "Courier New", monospace;
    --font-sans: "Inter", system-ui, -apple-system, sans-serif;

    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 10px;

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 28px;
    --space-xl: 48px;
    --space-2xl: 80px;

    --transition: 120ms ease;
}

html {
    font-size: 15px;
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ── Typography ── */
h1 {
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-primary);
}

h2 {
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

h3 {
    font-size: 0.82rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

p {
    line-height: 1.65;
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* ── Layout ── */
.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ── Header / Nav ── */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--border-soft);
}

.site-title {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.site-title h1 {
    color: var(--text-primary);
}

.site-title .subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    font-family: var(--font-mono);
}

.site-nav {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-link {
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--text-secondary);
}

.nav-link.active {
    color: var(--text-accent);
}

/* ── Main Content ── */
main {
    flex: 1;
    padding: var(--space-xl) 0;
}

/* ── Section Block ── */
.section {
    margin-bottom: var(--space-2xl);
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-soft);
}

.section-header h2 {
    color: var(--text-muted);
}

.section-meta {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.08em;
}

/* ── Behavior Row ── */
.behavior-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.behavior-row {
    display: grid;
    grid-template-columns: 160px 1fr auto auto auto auto auto;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    background: transparent;
    transition: background var(--transition);
}

.behavior-row:hover {
    background: var(--surface);
}

/* ── Register Button (per-row) ── */
.btn-register {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 3px var(--space-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition), border-color var(--transition);
    opacity: 0;
    pointer-events: none;
}

.behavior-row:hover .btn-register {
    opacity: 1;
    pointer-events: auto;
}

.btn-register:hover {
    color: var(--text-secondary);
    border-color: var(--text-muted);
}

.btn-register[data-registered="true"] {
    color: var(--text-muted);
    border-color: var(--border-soft);
    cursor: default;
    opacity: 0.5;
    pointer-events: none;
}

/* ── Delete Button (per-row) ── */
.btn-delete {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 3px var(--space-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition), border-color var(--transition);
    opacity: 0;
    pointer-events: none;
}

.behavior-row:hover .btn-delete {
    opacity: 1;
    pointer-events: auto;
}

/* ── Edit Button (per-row) ── */
.btn-edit {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 3px var(--space-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition), border-color var(--transition);
    opacity: 0;
    pointer-events: none;
}

.behavior-row:hover .btn-edit {
    opacity: 1;
    pointer-events: auto;
}

.btn-edit:hover {
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn-delete:hover {
    color: var(--text-secondary);
    border-color: var(--border);
}

.behavior-label {
    font-size: 0.86rem;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Dot Grid ── */
.dot-grid {
    display: flex;
    gap: 3px;
    align-items: center;
    flex-wrap: nowrap;
    overflow: hidden;
}

.dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
    transition: opacity var(--transition);
}

.dot[data-value="1"] {
    background: var(--dot-1);
}

.dot[data-value="0"] {
    background: var(--dot-0);
}

.dot[data-value="missing"] {
    background: var(--dot-miss);
}

.dot-today {
    outline: 1px solid var(--text-accent);
}

/* ── Row Stat ── */
.row-stat {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.06em;
    min-width: 36px;
    text-align: right;
}

/* ── Add Behavior ── */
.add-behavior {
    margin-top: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.field-input {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.88rem;
    padding: var(--space-sm) var(--space-md);
    outline: none;
    transition: border-color var(--transition);
    width: 220px;
}

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

.field-input:focus {
    border-color: var(--border);
    background: var(--surface-2);
}

.btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition);
}

.btn:hover {
    color: var(--text-secondary);
    border-color: var(--text-muted);
}

/* ── Date Strip ── */
.date-strip {
    display: grid;
    grid-template-columns: 160px 1fr auto;
    gap: var(--space-md);
    align-items: center;
    padding: 0 var(--space-md) var(--space-sm);
    margin-bottom: var(--space-xs);
}

.date-labels {
    display: flex;
    gap: 3px;
    overflow: hidden;
}

.date-label {
    width: 9px;
    font-size: 0.58rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-align: center;
    flex-shrink: 0;
    line-height: 1;
}

/* ── Analytics: Stat Cards ── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    padding: var(--space-lg) var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.stat-label {
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--text-primary);
    line-height: 1;
}

.stat-sub {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

/* ── Analytics: Behavior Detail ── */
.behavior-detail {
    margin-bottom: var(--space-xl);
}

.detail-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.detail-name {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.04em;
}

.detail-stats {
    display: flex;
    gap: var(--space-lg);
}

.detail-stat {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.detail-stat .value {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--text-accent);
}

.detail-stat .label {
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* ── Analytics: Calendar Heatmap ── */
.heatmap-row {
    display: flex;
    gap: 3px;
    align-items: center;
    margin-bottom: 2px;
}

.heat-cell {
    width: 11px;
    height: 11px;
    border-radius: 2px;
    flex-shrink: 0;
}

.heat-cell[data-value="1"] {
    background: var(--dot-1);
}

.heat-cell[data-value="0"] {
    background: var(--dot-0);
}

.heat-cell[data-value="missing"] {
    background: var(--dot-miss);
}

/* ── Divider ── */
.divider {
    border: none;
    border-top: 1px solid var(--border-soft);
    margin: var(--space-xl) 0;
}

/* ── System Key ── */
.system-key {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.key-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.key-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.key-dot.is-1 {
    background: var(--dot-1);
}

.key-dot.is-0 {
    background: var(--dot-0);
}

.key-dot.is-miss {
    background: var(--dot-miss);
    border: 1px solid var(--border);
}

.key-label {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.08em;
}

/* ── Footer ── */
.site-footer {
    padding: var(--space-lg) 0 var(--space-xl);
    border-top: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-note {
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.08em;
}

/* ── Utility Classes ── */
.legend {
    margin-top: 20px;
}

.btn-footer {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.visually-hidden {
    display: none;
}

.observation-note {
    margin-top: 20px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}