/* Shared CSS - Centralized color scheme and typography */

/* Color Scheme */
:root {
    --primary-text: #1a1a1a;
    --body-text: #777;
    --light-text: #666;
    --lighter-text: #999;
    --background: #fefefe;
    --accent-color: #bbb;
    --accent-hover: #666;
    --border-color: #e5e5e5;
    --error-color: #cc4444;
    --overlay-bg: rgba(0,0,0,0.8);
    --overlay-text: rgba(255,255,255,0.8);
    --overlay-light: rgba(255,255,255,0.6);
    --card-bg: white;
    --loading-bg: #f8f9fa;
}

/* Typography */
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--body-text);
    background-color: #f5f5f5;
    font-size: 0.9rem;
}

/* Headings use primary text color and Futura-like font */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary-text);
    font-family: 'Futura', 'Century Gothic', 'Trebuchet MS', 'Avenir', sans-serif;
}

/* Body text uses gray */
p, li, .body-text {
    color: var(--body-text);
}

/* Light text variants */
.light-text {
    color: var(--light-text);
}

.lighter-text {
    color: var(--lighter-text);
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Common utility classes */
.primary-text {
    color: var(--primary-text);
}

.accent-text {
    color: var(--accent-color);
}

.error-text {
    color: var(--error-color);
}

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

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    background-color: var(--background);
}

/* Loading states */
.loading {
    text-align: center;
    padding: 4rem 0;
    color: var(--light-text);
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.article-loading {
    text-align: center;
    padding: 3rem 0;
    color: var(--light-text);
}

.article-error {
    text-align: center;
    padding: 3rem 0;
    color: var(--error-color);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color, #e5e5e5);
    padding: 2rem 0;
    margin-top: 4rem;
    position: relative;
}

.footer-content {
    text-align: center;
}

.footer-email {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-email:hover {
    text-decoration: underline;
}

.up-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 2rem;
    padding: 0.33rem 0.67rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    z-index: 100;
    display: none;
    white-space: nowrap;
}

.up-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.up-button.visible {
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .up-button {
        bottom: 1rem;
        right: 1rem;
        padding: 0.27rem 0.53rem;
        font-size: 0.8rem;
    }
}