/* ============================================
   VUELTA A LOS 2000 - Estilos Comunes
   ============================================ */

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

body {
    font-family: Arial, Verdana, sans-serif;
    background: #e8e8e8 url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAABhJREFUeNpi+P//PwMDAwMTAxAABBiABQDfJAMBJ3pPZQAAAABJRU5ErkJggg==');
    color: #333;
    padding: 0;
}

.container {
    width: 960px;
    margin: 0 auto;
    background: white;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

/* ============================================
   HEADER
   ============================================ */

header {
    background: linear-gradient(to bottom, #7fba00, #5a9c00);
    padding: 20px;
    border-bottom: 3px solid #3d7000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.3);
}

.logo h1 {
    color: white;
    font-size: 36px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    font-weight: bold;
}

.logo-tagline {
    color: #e6f7d0;
    font-size: 12px;
    font-style: italic;
}

/* ============================================
   TABS SYSTEM
   ============================================ */

.tabs-container {
    background: linear-gradient(to bottom, #d0d0d0, #b0b0b0);
    padding: 5px 20px 0;
    border-bottom: 3px solid #666;
}

.tabs {
    display: flex;
    gap: 5px;
    list-style: none;
}

.tab {
    background: linear-gradient(to bottom, #999, #777);
    padding: 10px 25px;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    font-weight: bold;
    color: #fff;
    border: 2px solid #555;
    border-bottom: none;
    transition: all 0.3s;
    font-size: 14px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.3);
}

.tab:hover {
    background: linear-gradient(to bottom, #aaa, #888);
}

.tab.active {
    background: linear-gradient(to bottom, #7fba00, #5a9c00);
    border-color: #3d7000;
    transform: translateY(2px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.4);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   BACK LINK
   ============================================ */

.back-link {
    display: inline-block;
    margin: 20px;
    padding: 10px 20px;
    background: linear-gradient(to bottom, #e0e0e0, #c0c0c0);
    color: #333;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    border: 1px solid #999;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

.back-link:hover {
    background: linear-gradient(to bottom, #f0f0f0, #d0d0d0);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0,0,0,0.3);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: linear-gradient(to top, #333, #555);
    color: white;
    text-align: center;
    padding: 20px;
    border-top: 3px solid #7fba00;
}

.footer-content {
    font-size: 12px;
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: #7fba00;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
    text-decoration: underline;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-block;
    background: #7fba00;
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: bold;
    margin-left: 5px;
}

.badge.new {
    background: #00ff00;
    color: #333;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    background: linear-gradient(to bottom, #7fba00, #5a9c00);
    color: white;
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

.btn:hover {
    background: linear-gradient(to bottom, #5a9c00, #3d7000);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0,0,0,0.3);
}

.btn:active {
    transform: translateY(0);
}