/* ============================================
   TextUtils — Dark Theme Styles
   ============================================ */
:root {
    --bg: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --border: #30363d;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --green: #3fb950;
    --orange: #d29922;
    --red: #f85149;
    --radius: 8px;
    --sidebar: 240px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* App Layout */
.app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform .3s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem 0 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 700;
}

.logo-icon { font-size: 1.5rem; }

.nav { flex: 1; display: flex; flex-direction: column; gap: .25rem; overflow-y: auto; }

.nav-btn {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .65rem .75rem;
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    cursor: pointer;
    font-size: .9rem;
    text-align: left;
    transition: all .15s ease;
    width: 100%;
}

.nav-btn:hover { background: var(--bg-tertiary); color: var(--text); }
.nav-btn.active { background: var(--bg-tertiary); color: var(--accent); border-color: var(--border); }
.nav-btn span { font-size: 1.1rem; }

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding-top: .75rem;
    display: flex;
    gap: .5rem;
}

.support-btn {
    flex: 1;
    text-align: center;
    padding: .5rem .75rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    color: var(--orange);
    text-decoration: none;
    font-size: .85rem;
    font-weight: 600;
    transition: all .15s ease;
}
.support-btn:hover { background: var(--orange); color: var(--bg); }

.menu-toggle { display: none; width: 44px; flex: 0 0 44px; justify-content: center; }

/* Main Content */
.main {
    margin-left: var(--sidebar);
    flex: 1;
    padding: 2rem;
    max-width: 960px;
}

/* Tools */
.tool { display: none; }
.tool.active { display: block; }

h1 {
    font-size: 1.6rem;
    margin-bottom: .5rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.tool-desc {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: .95rem;
}

/* Inputs */
.tool-input {
    width: 100%;
    padding: .75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: .9rem;
    resize: vertical;
    transition: border-color .15s;
    line-height: 1.5;
}

.tool-input:focus {
    outline: none;
    border-color: var(--accent);
}

.result-area { min-height: 200px; }
.result-box {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: .875rem;
    word-break: break-all;
    min-height: 50px;
    white-space: pre-wrap;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: .75rem;
    margin-top: 1rem;
}

.stat {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-label {
    display: block;
    margin-top: .25rem;
    font-size: .75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* Buttons */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: .75rem;
}

.btn {
    padding: .5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    cursor: pointer;
    font-size: .85rem;
    font-weight: 500;
    transition: all .15s;
    font-family: var(--font);
}

.btn:hover { background: var(--border); }
.btn.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { background: var(--accent-hover); }

/* Password Generator */
.pw-settings {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
    margin-bottom: 1rem;
}

.pw-row {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.pw-row label {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    cursor: pointer;
}

.pw-row input[type="range"] {
    flex: 1;
    max-width: 200px;
    accent-color: var(--accent);
}

.pw-row input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

.pw-output input[type="text"] {
    width: 100%;
    padding: .75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1rem;
    margin-bottom: .5rem;
}

.pw-strength {
    margin-top: .75rem;
    padding: .5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--green);
    border-radius: var(--radius);
    font-size: .85rem;
    color: var(--green);
}

/* Lorem */
.lorem-settings {
    display: flex;
    gap: .75rem;
    align-items: center;
    margin-bottom: 1rem;
}

.lorem-settings label { font-size: .9rem; }
.lorem-settings input[type="number"] {
    width: 60px;
    padding: .4rem .5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: .9rem;
}

/* Diff */
.diff-inputs {
    display: flex;
    gap: 1rem;
}

.diff-inputs .tool-input { flex: 1; }

.diff-added { background: rgba(63,185,80,.15); color: var(--green); }
.diff-removed { background: rgba(248,81,73,.15); color: var(--red); }
.diff-same { color: var(--text-muted); }

/* Footer */
.site-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.footer-links h3 {
    width: 100%;
    font-size: .9rem;
    color: var(--text-muted);
    margin-bottom: .25rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: .85rem;
    padding: .3rem .6rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all .15s;
}

.footer-links a:hover { color: var(--accent); border-color: var(--accent); }

.footer-meta {
    font-size: .8rem;
    color: var(--text-muted);
    text-align: center;
}

/* Mobile */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }
    .sidebar.open { transform: translateX(0); }
    .menu-toggle { display: flex; }
    .main {
        margin-left: 0;
        padding: 1rem;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .diff-inputs {
        flex-direction: column;
    }
    .diff-inputs .tool-input { min-height: 100px; }
}