/* GStudio shared styles: tokens, sign-in screen, header, buttons, modal, forms */
:root {
  --bg0: #0b0b0d; --bg1: #131316; --bg2: #1b1c20; --bg3: #25262b;
  --border: rgba(255,255,255,0.14); --border-hover: rgba(255,255,255,0.32);
  --text0: #e6e3dc; --text1: rgba(230,227,220,0.62); --text2: rgba(230,227,220,0.38);
  --accent: #378ADD; --accent-dim: rgba(55,138,221,0.16);
  --green: #1D9E75; --red: #c8513a;
  --radius: 6px; --radius-lg: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg0); color: var(--text0); font: 15px/1.5 Inter, system-ui, sans-serif; }
button { font: inherit; cursor: pointer; }
.hidden { display: none !important; }

/* Login */
#login { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 16px; text-align: center; }
#login h1 { margin: 0; font-size: 26px; font-weight: 600; }
#login p { margin: 0; color: var(--text1); }
.err { color: var(--red); min-height: 1.5em; }

.btn { background: var(--bg2); color: var(--text0); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 14px; }
.btn:hover { border-color: var(--border-hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { color: var(--red); }
.btn.ghost { background: none; border-color: transparent; color: var(--text1); }
.btn:disabled { opacity: .5; cursor: default; }

/* App shell */
header { display: flex; align-items: center; gap: 12px; padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--bg1); }
header .brand { font-weight: 600; letter-spacing: .02em; }
header nav { display: flex; gap: 4px; margin-left: 12px; }
header nav a { color: var(--text1); text-decoration: none; padding: 6px 10px; border-radius: var(--radius); font-size: 14px; }
header nav a:hover { color: var(--text0); background: var(--bg2); }
header nav a.on { color: var(--text0); background: var(--bg3); }
header .who { margin-left: auto; color: var(--text1); font-size: 13px; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }

/* Modal */
.backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 10; }
.modal { width: 100%; max-width: 520px; max-height: calc(100vh - 32px); overflow-y: auto; background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; }
.modal h3 { margin: 0 0 2px; font-size: 18px; }
.modal .sub { color: var(--text1); font-size: 13px; margin-bottom: 18px; }
label.f { display: block; font-size: 12px; color: var(--text1); text-transform: uppercase; letter-spacing: .06em; margin: 14px 0 6px; }
input[type=text], input[type=date], textarea { width: 100%; background: var(--bg2); color: var(--text0); border: 1px solid var(--border); border-radius: var(--radius); padding: 9px 11px; font: inherit; color-scheme: dark; }
input:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { min-height: 140px; resize: vertical; }
.actions { display: flex; gap: 8px; margin-top: 20px; flex-wrap: wrap; }
.actions .spacer { flex: 1; }
.byline { color: var(--text2); font-size: 12px; margin-top: 14px; }
.status { font-size: 13px; color: var(--text1); margin-top: 10px; min-height: 1.2em; }

@media (max-width: 640px) {
  header { padding: 12px 16px; flex-wrap: wrap; }
  header nav { margin-left: 0; order: 3; width: 100%; }
}