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

body {
    font-family: 'Inter', -apple-system, system-ui, sans-serif;
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== tipografia ===== */
.text-primary {
    color: var(--color-primary, #0f1724);
}

.text-secondary {
    color: var(--color-secondary, #64748b);
}

/* ===== componentes ===== */
.tool-card {
    background: var(--card-bg, #ffffff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary, #0f1724);
}

.tool-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.tool-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary, #0f1724);
}

.tool-card p {
    color: var(--text-secondary, #64748b);
    font-size: 0.95rem;
    line-height: 1.5;
}

.tool-card .badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--badge-bg, #f1f5f9);
    color: var(--badge-text, #0f1724);
    margin-top: 0.75rem;
}

/* ===== hder nd nav ===== */
.nav-link {
    color: var(--text-secondary, #64748b);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-hover, #f1f5f9);
    color: var(--text-primary, #0f1724);
}

.nav-link.active {
    background: var(--color-primary, #0f1724);
    color: white;
}

/* ===== footer ===== */
.footer-link {
    color: var(--text-secondary, #64748b);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--text-primary, #0f1724);
}

/* ===== thm tggle ===== */
.theme-toggle {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    border: 1px solid var(--border-color, #e2e8f0);
    background: transparent;
    transition: all 0.2s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--bg-hover, #f1f5f9);
}

/* ===== tools pgs ===== */
.tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.tool-panel {
    background: var(--card-bg, #ffffff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 1rem;
    padding: 1.5rem;
}

.tool-panel textarea {
    width: 100%;
    min-height: 300px;
    padding: 1rem;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 0.75rem;
    font-family: 'Fira Code', 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    resize: vertical;
    background: var(--input-bg, #ffffff);
    color: var(--text-primary, #0f1724);
    transition: border-color 0.2s;
}

.tool-panel textarea:focus {
    outline: none;
    border-color: var(--color-primary, #0f1724);
    box-shadow: 0 0 0 3px rgba(15, 23, 36, 0.1);
}

.tool-panel textarea:read-only {
    background: var(--input-readonly-bg, #f8fafc);
}


@media (max-width: 768px) {
    .tool-card {
        padding: 1.25rem;
    }
    
    .tool-card .icon {
        font-size: 2rem;
    }
}