@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }

:root {
  --bg:         #1a1419;
  --bg-card:    rgba(255,255,255,0.03);
  --border:     rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.12);
  --ink:        #e8ddd6;
  --ink-mid:    #b0a09a;
  --ink-faint:  #6a5c58;
  --rose:       #c98a8a;
  --rose-dim:   rgba(201,138,138,0.15);
  --sage:       #7a9b95;
  --sage-dim:   rgba(122,155,149,0.15);
  --copper:     #b8824e;
  --copper-dim: rgba(184,130,78,0.15);
  --radius:     10px;
  --radius-sm:  6px;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono:  'SFMono-Regular', 'Consolas', monospace;
}

html, body { height: 100%; background: var(--bg); color: var(--ink); font-family: var(--font-mono); font-size: 14px; line-height: 1.6; -webkit-font-smoothing: antialiased; }

.app { min-height: 100vh; display: flex; flex-direction: column; max-width: 900px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header { display: flex; align-items: center; justify-content: space-between; padding: 28px 0 24px; border-bottom: 1px solid var(--border); gap: 16px; }
.header-left  { display: flex; align-items: baseline; gap: 16px; }
.header-right { display: flex; align-items: center; gap: 10px; }
.brand { font-family: var(--font-serif); font-size: 26px; font-weight: 400; color: var(--ink); }
.brand em { color: var(--rose); font-style: normal; }
.header-user { font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-faint); }

/* Buttons */
.ctrl-btn { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-mid); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px 12px; background: transparent; cursor: pointer; transition: color .15s, border-color .15s, background .15s; }
.ctrl-btn:hover { color: var(--ink); border-color: var(--copper); background: var(--copper-dim); }

/* Main */
.main { flex: 1; padding: 32px 0; display: flex; flex-direction: column; gap: 24px; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; }
.hr-card::before    { background: linear-gradient(90deg, transparent, var(--rose), transparent); }
.sleep-card::before { background: linear-gradient(90deg, transparent, var(--sage), transparent); }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.card-icon { font-size: 16px; color: var(--rose); }
.sleep-card .card-icon { color: var(--sage); }
.card-head h2 { font-family: var(--font-serif); font-size: 18px; font-weight: 400; color: var(--ink); }
.card-unit { font-size: 10px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-faint); margin-left: auto; }

/* Stats */
.stats-row { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.stats-row--secondary .stat-val { font-size: 20px; color: var(--ink-mid); }
.stat { display: flex; flex-direction: column; gap: 4px; min-width: 80px; }
.stat-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); }
.stat-val { font-family: var(--font-serif); font-size: 28px; line-height: 1; color: var(--ink); }
.stat-val small { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); margin-left: 2px; }
.stat-val.no-data { color: var(--ink-faint); font-size: 20px; }

/* Chart */
.chart-wrap { margin-top: 20px; height: 160px; position: relative; }
.chart-wrap canvas { max-height: 160px; }

/* Footer */
.footer { padding: 16px 0 24px; border-top: 1px solid var(--border); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); }

/* States */
.loading-state, .empty-state, .error-state { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); padding: 40px 0; text-align: center; }
.error-state { color: var(--rose); }

/* Login */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card { width: 100%; max-width: 380px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; position: relative; overflow: hidden; }
.login-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--rose), transparent); }
.login-brand { text-align: center; margin-bottom: 32px; }
.login-brand h1 { font-family: var(--font-serif); font-size: 32px; font-weight: 400; color: var(--ink); margin-bottom: 6px; }
.login-brand h1 em { color: var(--rose); font-style: normal; }
.label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.16em; color: var(--ink-faint); }
.login-form { display: flex; flex-direction: column; gap: 18px; }
.field-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); margin-bottom: 6px; }
.field-hint { font-size: 9px; color: var(--ink-faint); opacity: 0.6; text-transform: none; letter-spacing: 0; }
.field-input { width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--ink); font-family: var(--font-mono); font-size: 13px; padding: 10px 14px; outline: none; transition: border-color .15s; }
.field-input:focus { border-color: var(--rose); }
.field-input::placeholder { color: var(--ink-faint); }
.submit-btn { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink); background: var(--rose-dim); border: 1px solid var(--rose); border-radius: var(--radius-sm); padding: 10px 20px; cursor: pointer; transition: background .15s; width: 100%; }
.submit-btn:hover { background: rgba(201,138,138,0.25); }
.error-msg { font-size: 11px; color: var(--rose); text-align: center; text-transform: uppercase; letter-spacing: 0.1em; }
.delete-btn { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); background: transparent; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 16px; cursor: pointer; transition: color .15s, border-color .15s; }
.delete-btn:hover { color: var(--rose); border-color: var(--rose); }
.fade-in { animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* Admin */
.admin-main { max-width: 700px; }
.section-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.16em; color: var(--ink-faint); margin-bottom: 14px; }
.toast { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; padding: 12px 18px; border-radius: var(--radius-sm); margin-bottom: 24px; }
.toast-ok  { background: rgba(122,155,149,0.1); border: 1px solid rgba(122,155,149,0.3); color: var(--sage); }
.toast-err { background: rgba(201,138,138,0.1); border: 1px solid rgba(201,138,138,0.3); color: var(--rose); }
.user-list { display: flex; flex-direction: column; gap: 12px; }
.user-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; position: relative; overflow: hidden; }
.user-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--copper), transparent); }
.user-card-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.user-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--copper-dim); border: 1px solid var(--copper); color: var(--copper); font-family: var(--font-serif); font-size: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.user-meta { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.user-name { font-family: var(--font-serif); font-size: 16px; color: var(--ink); }
.user-handle { font-size: 11px; color: var(--ink-faint); }
.user-perms { display: flex; gap: 6px; flex-wrap: wrap; margin-left: auto; }
.perm-chip { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; padding: 3px 8px; border-radius: 12px; border: 1px solid; }
.perm-chip.perm-on  { border-color: var(--sage); color: var(--sage); background: var(--sage-dim); }
.perm-chip.perm-off { border-color: var(--border); color: var(--ink-faint); background: transparent; }
.edit-toggle { margin-left: 8px; }
.edit-form { margin-top: 20px; border-top: 1px solid var(--border); padding-top: 20px; }
.edit-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.perm-section { margin-bottom: 20px; }
.perm-toggles { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.perm-toggle { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border); color: var(--ink-faint); background: transparent; cursor: pointer; transition: all .15s; display: flex; align-items: center; gap: 6px; }
.perm-toggle input { display: none; }
.perm-toggle.active { border-color: var(--sage); color: var(--sage); background: var(--sage-dim); }
.perm-toggle:not(.active):hover { border-color: var(--border-hover); color: var(--ink-mid); }
.edit-actions { display: flex; gap: 10px; align-items: center; }
.edit-actions .submit-btn { width: auto; }