:root {
  --paper:     #0d0b09;
  --paper-2:   #161310;
  --paper-3:   #1e1a15;
  --ink:       #ece8df;
  --ink-2:     #c8c2b3;
  --ink-mute:  #88826f;
  --ink-dim:   #57534a;
  --line:      rgba(236,232,223,.10);
  --line-2:    rgba(236,232,223,.22);
  --accent:    #c772fe;

  --yellow: #e8b400;
  --green: #2ea86e;
  --blue: #4d8dff;

  --serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --sans:  'Geist', system-ui, -apple-system, sans-serif;
  --mono:  'Geist Mono', ui-monospace, monospace;
}

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

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #0a0008; }

.serif { font-family: var(--serif); }

.meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--ink-dim); }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.frame { max-width: 1100px; margin: 0 auto; padding: 0 32px; }

/* --- Buttons --- */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 18px;
  font-family: var(--sans); font-size: 13px;
  font-weight: 500; letter-spacing: .03em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s, background .15s, color .15s, border-color .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #0a0008; }

.pill {
  display: inline-flex; align-items: center;
  height: 30px; padding: 0 12px;
  border: 1px solid var(--line-2);
  background: transparent;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-2);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.pill:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* --- Login --- */

.login-screen {
  max-width: 420px;
  margin: 0 auto;
  text-align: center;
  padding: 18vh 1.5rem 4rem;
}

.login-eyebrow {
  justify-content: center;
  margin-bottom: 12px;
}

.login-title {
  font-size: clamp(48px, 10vw, 72px);
  font-weight: 400;
  letter-spacing: -.02em;
  line-height: 1;
  margin-bottom: 18px;
}

.subtitle {
  color: var(--ink-mute);
  font-size: 14px;
  margin-bottom: 2rem;
}

.account-picker {
  display: flex;
  gap: 1px;
  background: var(--line-2);
  border: 1px solid var(--line-2);
}

.account-btn {
  flex: 1;
  padding: 0.9rem 0;
  border: none;
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  color: var(--ink-2);
  transition: color .15s, background .15s;
}

.account-btn[data-account="yellow"]:hover, .account-btn[data-account="yellow"].selected { color: var(--yellow); }
.account-btn[data-account="green"]:hover, .account-btn[data-account="green"].selected { color: var(--green); }
.account-btn[data-account="blue"]:hover, .account-btn[data-account="blue"].selected { color: var(--blue); }

.account-btn.selected { background: var(--paper-3); }

.login-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.login-form input {
  flex: 1;
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  padding: 9px 11px;
  outline: none;
}

.login-form input:focus { border-color: var(--accent); }

.error {
  color: #f87171;
  font-size: 13px;
  margin-top: 1rem;
}

/* --- Masthead --- */

.masthead {
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklab, var(--paper) 85%, transparent);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 10;
}

.mast-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 32px; height: 56px; gap: 24px;
}

.mast-logo {
  font-family: var(--mono);
  font-size: 12px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-2); display: flex; align-items: center; gap: 8px;
}

.mast-logo .dot {
  width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
}

.mast-nav { display: flex; align-items: center; gap: 16px; }

.mast-nav .divider { width: 1px; height: 16px; background: var(--line-2); }

.current-account {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* --- App main --- */

.app-main { padding: 48px 32px 96px; }

.upload-card {
  border: 1px solid var(--line);
  padding: 28px 32px;
  margin-bottom: 40px;
}

.upload-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.upload-row input[type="file"] {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
}

.upload-status {
  color: var(--ink-mute);
  font-size: 12.5px;
  font-family: var(--mono);
}

/* --- View tabs --- */

.view-tabs {
  display: flex;
  gap: 24px;
  border-bottom: 1px solid var(--ink-dim);
  margin-bottom: 40px;
}

.view-tab {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}

.view-tab:hover { color: var(--ink-2); }
.view-tab.selected { color: var(--ink); border-color: var(--accent); }

/* --- Day groups --- */

.day-group + .day-group {
  margin-top: 36px;
}

.day-header {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 16px;
}

/* --- Your Images --- */

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.photo-tile {
  position: relative;
}

.photo-tile img {
  width: 100%;
  display: block;
  background: var(--paper-2);
  border: 1px solid var(--line);
  cursor: zoom-in;
  transition: opacity .15s;
}

.photo-tile img:hover {
  opacity: .85;
}

.delete-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in oklab, var(--paper) 80%, transparent);
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}

.delete-btn:hover {
  background: #f87171;
  border-color: #f87171;
  color: #2a0a0a;
}

/* --- Community feed --- */

.filter-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.day-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 5px 10px;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}

.filter-btn:hover { color: var(--ink); }
.filter-btn.selected { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.community-feed {
  display: flex;
  flex-direction: column;
}

.community-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.community-slot {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.community-slot.slot-empty {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--line-2);
  opacity: .45;
}

.feed-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--line-2);
  padding: 4px 8px;
}

.tag-yellow { color: var(--yellow); border-color: color-mix(in oklab, var(--yellow) 40%, var(--line-2)); }
.tag-green { color: var(--green); border-color: color-mix(in oklab, var(--green) 40%, var(--line-2)); }
.tag-blue { color: var(--blue); border-color: color-mix(in oklab, var(--blue) 40%, var(--line-2)); }

.feed-time {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
}

/* --- Lightbox --- */

.lightbox {
  position: fixed;
  inset: 0;
  background: color-mix(in oklab, #000 92%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
  cursor: zoom-out;
  z-index: 100;
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border: 1px solid var(--line-2);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 14px;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}

.lightbox-close:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

@media (max-width: 720px) {
  .photo-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .community-row { grid-template-columns: 1fr; }
}