/*
   CHMOD CALCULATOR — EXPERT WEB TOOLS
*/

/* 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;
    --warning:          #f59e0b;
    --input-bg:         #0f1115;
    --font-ui:          'Inter', system-ui, sans-serif;
    --font-mono:        'JetBrains Mono', monospace;
    --shadow:           0 10px 25px rgba(0,0,0,0.5);
}

html.light-theme {
    --bg-base:          #f8fafc;
    --bg-surface:       #ffffff;
    --bg-surface-hover: #f1f5f9;
    --border-color:     #e2e8f0;
    --accent-primary:   #2563eb;
    --text-primary:     #0f172a;
    --text-secondary:   #475569;
    --success:          #059669;
    --warning:          #d97706;
    --input-bg:         #f1f5f9;
    --shadow:           0 10px 25px rgba(0,0,0,0.05);
}

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

html, body {
    width: 100%; max-width: 100vw; overflow-x: hidden;
    /* FIX: Chromium Bug Prevention */
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

body { 
    background-color: var(--bg-base); color: var(--text-primary); 
    font-family: var(--font-ui); line-height: 1.6; 
}

/* 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; transition: background-color 0.2s ease, border-color 0.2s ease;
}
.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); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.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; }

.icon-btn { 
    background: transparent; border: none; color: var(--text-secondary); 
    cursor: pointer; font-size: 1.2rem; transition: 0.2s; 
    width: 36px; height: 36px; border-radius: 6px; display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { color: var(--text-primary); background: var(--bg-surface-hover); }
.icon-btn:focus-visible { outline: 2px solid var(--accent-primary); }

/* Main Workspace */
.studio-layout { 
    flex: 1; display: flex; flex-direction: column; align-items: center; 
    padding: 2rem 1.5rem; overflow-y: auto; 
}
.calculator-container { width: 100%; max-width: 1000px; }

.calc-header { text-align: center; margin-bottom: 2.5rem; }
.calc-header h1 { 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(auto-fit, minmax(200px, 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; transition: background-color 0.2s, border-color 0.2s;
}
.special-col { border-style: dashed; border-color: rgba(245, 158, 11, 0.4); }
.special-col h3 .badge { color: var(--warning); background: rgba(245, 158, 11, 0.1); }

.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: var(--border-color); 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 { opacity: 0; position: absolute; width: 0; height: 0; }

.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); flex-shrink: 0;
}
.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: #fff; font-size: 12px; 
}
.special-col .perm-checkbox input:checked + .box { background: var(--warning); border-color: var(--warning); }
.special-col .perm-checkbox code { color: var(--warning); }

/* FIX: Accessibility focus ring */
.perm-checkbox input:focus-visible + .box { outline: 2px solid var(--accent-primary); outline-offset: 2px; }

.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; font-weight: 600; }

.code-input { 
    width: 100%; background: var(--input-bg); 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); }

/* Terminal Command Box */
.command-panel { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; transition: background-color 0.2s, border-color 0.2s; }
.cmd-options { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 15px; }

.opt-label { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-secondary); cursor: pointer; user-select: none; }
.opt-label input { accent-color: var(--accent-primary); width: 16px; height: 16px; cursor: pointer; }

#targetInput {
    background: var(--input-bg); border: 1px solid var(--border-color); color: var(--text-primary);
    padding: 6px 12px; border-radius: 6px; font-family: var(--font-mono); font-size: 0.9rem; outline: none; transition: 0.2s;
    width: 200px; max-width: 100%;
}
#targetInput:focus { border-color: var(--accent-primary); }

.cmd-box { 
    display: flex; align-items: center; background: var(--input-bg); 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; overflow-x: auto; white-space: nowrap; }
.cmd-box code::-webkit-scrollbar { display: none; }

.icon-btn.highlight { border: 1px solid var(--border-color); background: var(--bg-surface); }
.icon-btn.highlight:hover { border-color: var(--accent-primary); color: var(--accent-primary); }

/* Info Section (Ported from other tools) */
.info-section { margin-top: 4rem; padding: 0 1rem; width: 100%; max-width: 1000px; border-top: 1px dashed var(--border-color); padding-top: 3rem; }
.info-section h2 { font-size: 1.5rem; text-align: center; margin-bottom: 2rem; }
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
.info-grid h3 { color: var(--accent-primary); font-size: 1.1rem; margin-bottom: 0.5rem; }
.info-grid i { margin-right: 8px; }
.info-grid p { color: var(--text-secondary); font-size: 0.95rem; }
.info-grid strong { color: var(--text-primary); }

.faq-container { margin-top: 2rem; }
.faq-container h3 { margin: 1.5rem 0 1rem; font-size: 1.3rem; }
.faq-container h4 { color: var(--success); font-size: 1rem; margin-bottom: 0.5rem; margin-top: 1.5rem; }
.faq-container p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1rem; }
.faq-container code { background: rgba(125,125,125,0.1); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); color: var(--text-primary); border: 1px solid var(--border-color); }

footer { text-align: center; padding: 3rem 0; color: var(--text-secondary); font-size: 0.9rem; margin-top: 2rem; width: 100%; }
footer a { color: var(--text-primary); text-decoration: none; }
footer a:hover { color: var(--accent-primary); }

/* Toast */
.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: var(--shadow); 
    opacity: 0; transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55); 
    z-index: 1000; pointer-events: none; max-width: calc(100vw - 2rem);
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

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

@media (max-width: 600px) {
    .permissions-matrix { grid-template-columns: 1fr; }
    .cmd-options { flex-direction: column; align-items: flex-start; }
    #targetInput { width: 100%; }
    .info-grid { grid-template-columns: 1fr; }
}