/* Roberto's Toolset - Common Styles */

:root {
    /* Dark theme (default) */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --text-primary: #f0f0f5;
    --text-secondary: #b0b0c0;
    --text-muted: #6a6a80;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --link: #818cf8;
    --border: #2a2a40;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --link: #4f46e5;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.06);
    --shadow-hover: rgba(0, 0, 0, 0.1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container - tools can override max-width */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
header {
    position: relative;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Header actions (github + theme toggle) */
.header-actions {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.github-link,
.home-link {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    color: var(--text-primary);
    transition: border-color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.github-link:hover,
.home-link:hover {
    border-color: var(--accent);
}

.github-link svg,
.home-link svg {
    display: block;
}

/* Theme toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: border-color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    border-color: var(--accent);
}

.icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: none;
}

[data-theme="light"] .icon-moon {
    display: block;
}

/* Footer */
footer {
    text-align: center;
    padding-top: 1.5rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
}

footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0.25rem 0;
}

footer a {
    color: var(--text-muted);
    text-decoration: none;
}

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

/* Utility */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 1.5rem 1rem;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .tagline {
        font-size: 0.875rem;
    }
}