:root {
    --primary: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #C8E6C9;
    --secondary: #8BC34A;
    --accent: #FFC107;
    --background: #f8f9fa;
    --card: #ffffff;
    --text: #2d3436;
    --text-secondary: #636e72;
    --error: #e74c3c;
    --warning: #f39c12;
    --success: #27ae60;
    --border-radius: 10px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --highlight: rgba(76, 175, 80, 0.15);
    --border: 1px solid #e0e0e0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Poppins', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text);
    line-height: 1.5;
    padding: 15px;
    min-height: 100vh;
    background-image: 
        linear-gradient(135deg, rgba(139, 195, 74, 0.03) 0%, transparent 50%),
        linear-gradient(-135deg, rgba(76, 175, 80, 0.03) 0%, transparent 50%);
}

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

.container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    gap: 20px;
}

header {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
    border-bottom: 4px solid var(--accent);
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 30%);
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--primary-light), var(--accent));
    animation: shimmer 3s infinite linear;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

h1 {
    font-size: 2rem;
    margin-bottom: 5px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

h2 {
    font-size: 1.4rem;
    margin: 15px 0 10px;
    color: var(--primary-dark);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--accent);
}

h3 {
    font-size: 1.1rem;
    margin: 10px 0 8px;
    color: var(--primary-dark);
    font-weight: 600;
}

.disclaimer {
    background-color: #fff8e1;
    color: #8d6e63;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    border-left: 4px solid var(--accent);
    font-size: 0.9rem;
    box-shadow: var(--box-shadow);
}

/* File Input Section - Estilo Mejorado */
.file-input-container {
    background-color: var(--card);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 15px;
    text-align: center;
    transition: var(--transition);
    border: 2px dashed rgba(76, 175, 80, 0.3);
    position: relative;
    overflow: hidden;
}

.file-input-container:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.15);
    transform: translateY(-2px);
}

.file-input-container::before {
    content: '';
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background-color: var(--accent);
    transform: rotate(45deg);
    opacity: 0.3;
}

.file-input-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(76, 175, 80, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.file-input-label::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, var(--primary-dark), var(--primary));
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.file-input-label:hover::before {
    opacity: 1;
}

.file-input-label:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.file-input-label i {
    font-size: 1.1rem;
}

#file-input {
    display: none;
}

.file-info {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.tab-container {
    margin-bottom: 20px;
    background-color: var(--card);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    border: var(--border);
}

.tab-buttons {
    display: flex;
    background: linear-gradient(to bottom, #f9f9f9, #f0f0f0);
    border-bottom: var(--border);
    overflow-x: auto;
    scrollbar-width: none;
    padding: 0 15px;
}

.tab-buttons::-webkit-scrollbar {
    display: none;
}

.tab-button {
    padding: 12px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    white-space: nowrap;
    transition: var(--transition);
    flex-shrink: 0;
    margin: 0 5px;
}

.tab-button:first-child {
    margin-left: 0;
}

.tab-button:last-child {
    margin-right: 0;
}

.tab-button:hover {
    color: var(--primary);
}

.tab-button.active {
    color: var(--primary-dark);
    font-weight: 700;
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 20%;
    right: 20%;
    height: 3px;
    background-color: var(--accent);
    border-radius: 3px 3px 0 0;
    animation: tabUnderline 0.3s ease-out;
}

@keyframes tabUnderline {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.tab-content {
    display: none;
    padding: 20px;
    max-height: 500px;
    overflow-y: auto;
    background-color: var(--card);
}

.tab-content.active {
    display: block;
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.mod-sections {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 15px;
}

.mod-section {
    background-color: var(--card);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: var(--border);
}

.mod-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.mod-option {
    display: grid;
    grid-template-columns: 1fr 80px 50px;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 8px 0;
    border-bottom: 1px dashed #eee;
}

.mod-option:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.mod-option label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mod-option input {
    padding: 6px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: var(--transition);
    font-size: 0.9rem;
    height: 34px;
    text-align: center;
    background-color: #f9f9f9;
}

.mod-option input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
    background-color: white;
}

.mod-option input:hover {
    border-color: #aaa;
}

.mod-option .original-value {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-align: right;
    font-style: italic;
    opacity: 0.8;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 20px 0;
    flex-wrap: wrap;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

button:hover::before {
    opacity: 1;
}

button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

button:focus:not(:active)::after {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

#apply-btn {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
}

#apply-btn:hover {
    background: linear-gradient(to right, var(--primary-dark), var(--primary));
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(76, 175, 80, 0.4);
}

#reset-btn {
    background: linear-gradient(to right, #f5f5f5, #e0e0e0);
    color: var(--text);
}

#reset-btn:hover {
    background: linear-gradient(to right, #e0e0e0, #d0d0d0);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

#download-btn {
    background: linear-gradient(to right, #2196F3, #21CBF3);
    color: white;
    display: none;
}

#download-btn:hover {
    background: linear-gradient(to right, #0b7dda, #0d8de0);
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(33, 150, 243, 0.4);
}

.credits {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--card);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: var(--border);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 195, 74, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(76, 175, 80, 0.05) 0%, transparent 20%);
}

.credits h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
}

.credit-card {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
    border: var(--border);
    position: relative;
    overflow: hidden;
}

.credit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transition: var(--transition);
}

.credit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    background-color: white;
}

.credit-card:hover::before {
    width: 5px;
}

.credit-card h3 {
    color: var(--primary-dark);
    margin-bottom: 8px;
    font-size: 1.1rem;
    position: relative;
    display: inline-block;
}

.credit-card h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 25%;
    right: 25%;
    height: 2px;
    background-color: var(--accent);
}

.credit-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

.credit-card a {
    color: var(--primary-dark);
    text-decoration: none;
    transition: var(--transition);
}

.credit-card a:hover {
    color: var(--primary);
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: auto;
    padding: 15px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    background-color: var(--card);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: var(--border);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent), var(--primary));
    border-radius: 0 0 3px 3px;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    max-width: 350px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.notification.show {
    transform: translateX(0);
}

.notification i {
    font-size: 1.2rem;
}

.notification.error {
    background: linear-gradient(to right, #e74c3c, #c0392b);
    border-left: 4px solid #c0392b;
}

.notification.warning {
    background: linear-gradient(to right, #f39c12, #e67e22);
    border-left: 4px solid #e67e22;
}

.notification.success {
    background: linear-gradient(to right, #27ae60, #2ecc71);
    border-left: 4px solid #2ecc71;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #aaa;
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: #888;
}

@media (max-width: 768px) {
    .mod-sections {
        grid-template-columns: 1fr;
    }
    
    .mod-option {
        grid-template-columns: 1fr 70px 40px;
        gap: 8px;
    }
    
    .buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    button {
        width: 100%;
    }
    
    .tab-buttons {
        padding: 0 10px;
    }
    
    .tab-button {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .tab-content {
        padding: 15px;
        max-height: 400px;
    }
    
    .credits-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
    }
    
    .mod-option {
        grid-template-columns: 1fr 60px 35px;
        gap: 6px;
    }
    
    .mod-option label {
        font-size: 0.85rem;
    }
    
    .mod-option input {
        width: 100%;
    }
    
    .credits-grid {
        grid-template-columns: 1fr;
    }
    
    .notification {
        max-width: 280px;
        padding: 12px 20px;
    }
}