/* Core Variables & Typography */
@font-face { font-family: 'Inter'; src: url('/fonts/inter-v20-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('/fonts/jetbrains-mono-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }

:root {
    --bg-base: #0b0d10;
    --bg-surface: #14171d;
    --bg-surface-hover: #1f232b;
    --border-color: #272c36;
    --accent-primary: #3b82f6;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success: #10b981;
    --font-ui: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg-base); color: var(--text-primary); font-family: var(--font-ui); line-height: 1.6; overflow-x: hidden; }

/* Layout Architecture */
.studio-wrapper { display: flex; flex-direction: column; height: 100vh; min-height: 100dvh; }
.studio-header { height: 60px; display: flex; justify-content: space-between; align-items: center; padding: 0 1.5rem; background: var(--bg-surface); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.header-left { display: flex; align-items: center; gap: 15px; }
.back-link { color: var(--text-secondary); font-size: 1.2rem; min-width: 44px; min-height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 6px; text-decoration: none; transition: 0.2s; }
.back-link:hover { color: var(--text-primary); background: var(--bg-surface-hover); }
.logo { font-size: 1.2rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.logo i { color: var(--success); }
.logo span { color: var(--text-primary); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 0.6rem 1.4rem; border-radius: 9999px; font-weight: 500; cursor: pointer; transition: 0.2s; border: none; font-family: var(--font-ui); }
.btn-ghost { background: transparent; color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-ghost:hover { background: var(--bg-surface-hover); }
.btn-sm { min-height: 32px; padding: 0.3rem 0.85rem; font-size: 0.85rem; }

.studio-layout { flex: 1; display: flex; justify-content: center; padding: 2rem 1.5rem; overflow-y: auto; }
.calculator-container { width: 100%; max-width: 800px; }

.calc-header { text-align: center; margin-bottom: 2.5rem; }
.calc-header h2 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.calc-header p { color: var(--text-secondary); }

/* Matrix Grid */
.permissions-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-bottom: 2rem; }
.matrix-column { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; }
.matrix-column h3 { font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.2rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.8rem; }
.badge { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px; background: rgba(255,255,255,0.05); padding: 4px 8px; border-radius: 4px; color: var(--text-secondary); }

.perm-checkbox { display: flex; align-items: center; gap: 12px; margin-bottom: 1rem; cursor: pointer; font-size: 0.95rem; user-select: none; }
.perm-checkbox:last-child { margin-bottom: 0; }
.perm-checkbox input { display: none; }
.perm-checkbox .box { width: 22px; height: 22px; border: 2px solid var(--border-color); border-radius: 6px; display: inline-flex; align-items: center; justify-content: center; transition: 0.2s; position: relative; background: var(--bg-base); }
.perm-checkbox input:checked + .box { background: var(--success); border-color: var(--success); }
.perm-checkbox input:checked + .box::after { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: #000; font-size: 12px; }
.perm-checkbox code { margin-left: auto; color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.85rem; }
.perm-checkbox:hover .box { border-color: var(--text-secondary); }

/* Results */
.results-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 2rem; }
.input-group label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.5px; }
.code-input { width: 100%; background: #0f1115; border: 1px solid var(--border-color); color: var(--success); font-family: var(--font-mono); font-size: 1.5rem; padding: 1rem; border-radius: 8px; outline: none; transition: 0.2s; text-align: center; font-weight: 700; letter-spacing: 2px; }
.code-input:focus { border-color: var(--success); box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1); }

.command-panel { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; }
.command-panel label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.5px; }
.cmd-box { display: flex; align-items: center; background: #0f1115; padding: 1rem 1.5rem; border-radius: 8px; border: 1px solid var(--border-color); gap: 12px; }
.cmd-box .prompt { color: var(--text-secondary); font-family: var(--font-mono); font-size: 1.2rem; user-select: none; }
.cmd-box code { flex: 1; color: var(--text-primary); font-family: var(--font-mono); font-size: 1.1rem; }
.icon-btn { background: transparent; border: none; color: var(--text-secondary); cursor: pointer; font-size: 1.2rem; transition: 0.2s; }
.icon-btn:hover { color: var(--text-primary); }

.toast { position: fixed; bottom: 30px; left: 50%; transform: translate(-50%, 100px); background: var(--text-primary); color: var(--bg-base); padding: 12px 24px; border-radius: 8px; font-weight: 600; box-shadow: 0 10px 25px rgba(0,0,0,0.5); opacity: 0; transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55); z-index: 1000; pointer-events: none; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 900px) {
    .hide-mobile { display: none !important; }
    .studio-layout { padding: 1rem; }
    .permissions-matrix { grid-template-columns: 1fr; gap: 1rem; }
    .results-panel { grid-template-columns: 1fr; gap: 1rem; }
}