/*
 * GStudio Shared Theme
 * ─────────────────────────────────────────────────────────────
 * Single source of truth for colors, typography, and base UI.
 * Edit here to propagate changes across all tool modules.
 *
 * Fonts: include the Google Fonts <link> in each page's <head>:
 *   Cormorant Garamond (300,400,500,600) + DM Mono (300,400,500)
 * ─────────────────────────────────────────────────────────────
 */

/* ── Design tokens ── */
:root {
  /* Backgrounds */
  --bg0: #0b0b0d;           /* page background                  */
  --bg1: #111113;           /* surfaces: topbar, sidebar, cards */
  --bg2: #191a1d;           /* inputs, secondary surfaces       */
  --bg3: #222326;           /* hover / selected state           */

  /* Borders */
  --border:       rgba(255,255,255,0.20);
  --border-hover: rgba(255,255,255,0.38);

  /* Text */
  --text0: #dedad1;                /* primary   */
  --text1: rgba(222,218,209,0.60); /* secondary */
  --text2: rgba(222,218,209,0.35); /* muted     */

  /* Accent palette */
  --green:  #1D9E75; --green-dim:  rgba(29,158,117,0.15);
  --red:    #c8513a; --red-dim:    rgba(200,81,58,0.15);
  --amber:  #BA7517; --amber-dim:  rgba(186,117,23,0.12);
  --blue:   #378ADD; --blue-dim:   rgba(55,138,221,0.12);
  --purple: #9B59B6; --purple-dim: rgba(155,89,182,0.15);
  --teal:   #16A085; --teal-dim:   rgba(22,160,133,0.15);
  --orange: #D4681E; --orange-dim: rgba(212,104,30,0.15);
  --pink:   #C0527A; --pink-dim:   rgba(192,82,122,0.15);

  /* Shape */
  --radius:    6px;
  --radius-lg: 10px;

  /* Typography */
  --font-mono:  'DM Mono', monospace;
  --font-serif: 'Cormorant Garamond', serif;

  /* Font scale (all ≥ 18px with --base: 20px) */
  --fs-sm:  0.9rem;   /* 18px — minimum */
  --fs-md:  1rem;     /* 20px */
  --fs-lg:  1.1rem;   /* 22px */
  --fs-xl:  1.25rem;  /* 25px */
  --fs-2xl: 1.5rem;   /* 30px */

  /* ── Base font size ──────────────────────────────────────────
   * All rem values scale from this. Change here to resize
   * the entire UI globally across all tools.
   * Minimum standard: 20px
   * ─────────────────────────────────────────────────────────── */
  --base: 20px;
}

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

/* ── Base ── */
html, body {
  background:  var(--bg0);
  color:       var(--text0);
  font-family: var(--font-mono);
  font-size:   var(--base);
}

/* ── Login screen ── */
#login-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1.8rem;
  padding: 2rem;
}
.login-wordmark {
  font-size: 2.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.login-wordmark span { color: var(--text2); font-weight: 400; }
.login-subtitle {
  font-size: 0.9rem;
  color: var(--text2);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: -1.6rem;
}
.login-card {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  width: 100%;
  max-width: 340px;
}
.login-card-title {
  font-size: 0.9rem;
  color: var(--text1);
  letter-spacing: 0.04em;
}
.google-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--bg2);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  color: var(--text0);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: background 0.15s, border-color 0.15s;
  width: 100%;
  justify-content: center;
}
.google-btn:hover { background: var(--bg3); }
.google-btn svg { flex-shrink: 0; }
#login-error {
  display: none;
  font-size: 0.9rem;
  color: var(--red);
  background: var(--red-dim);
  border: 1px solid rgba(200,81,58,0.3);
  border-radius: var(--radius);
  padding: 0.5rem 0.8rem;
  text-align: center;
  width: 100%;
}
.login-note {
  font-size: 0.9rem;
  color: var(--text2);
  text-align: center;
  line-height: 1.6;
}

/* ── Shared header button ── */
.hbtn {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text1);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.18rem 0.45rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.03em;
}
.hbtn:hover { border-color: var(--border-hover); color: var(--text0); }

/* ── Divider ── */
.sep { width: 1px; height: 1rem; background: var(--border); flex-shrink: 0; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

/* ── GStudio tool nav ── */
.gs-tool-btn {
  display: flex; align-items: center; justify-content: center;
  width: 1.5rem; height: 1.5rem; border-radius: 4px;
  color: var(--text2); text-decoration: none; flex-shrink: 0;
  transition: all 0.12s;
}
.gs-tool-btn:hover { color: var(--text0); background: var(--bg2); }
.gs-tool-btn.gs-cur { color: var(--text0); background: var(--bg3); }
.gs-tool-nav { display:flex; align-items:center; flex-shrink:0; }
.gs-tool-link { color:var(--text2); text-decoration:none; font-family:var(--font-mono); font-size:0.15in; padding:0.1rem 0.2rem; transition:color 0.12s; white-space:nowrap; }
.gs-tool-link:hover { color:var(--text0); }
.gs-tool-link.gs-cur { color:var(--blue); font-weight:700; }
.gs-nav-sep { color:rgba(255,255,255,0.55); font-family:var(--font-mono); font-size:0.15in; user-select:none; padding:0 0.05rem; }
.gs-font-label { font-size: 0.75rem; color: var(--text2); font-family: var(--font-mono); min-width: 2.2rem; text-align: center; flex-shrink: 0; }

/* ── sz-btn (shared) ── */
.sz-btn { background: var(--bg2); border: none; color: var(--text1); width: 1.5rem; height: 1.5rem; font-family: var(--font-mono); font-size: 0.9rem; cursor: pointer; transition: all 0.15s; display: flex; align-items: center; justify-content: center; }
.sz-btn:hover { background: var(--bg3); color: var(--text0); }
