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

:root {
    /* Muted Slate & Professional Teal Palette (Clean Corporate Aesthetic) */
    --bg-primary: #0f172a;       /* Slate 900 */
    --bg-secondary: #1e293b;     /* Slate 800 */
    --bg-card: #1e293b;          /* Solid Slate 800 */
    --border-color: #334155;     /* Slate 700 */
    --border-hover: #475569;     /* Slate 600 */
    
    --text-main: #f8fafc;        /* Slate 50 */
    --text-muted: #94a3b8;       /* Slate 400 */
    
    --accent-color: #0f766e;     /* Deep Corporate Teal */
    --accent-hover: #0d9488;     /* Muted Teal Hover */
    --accent-light: rgba(15, 118, 110, 0.1);
    
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.6;
    overflow-x: hidden;
}

.navbar{
    position: sticky;
    top: 0;
    z-index: 1000;

    width: 100%;
    height: 72px;

    display: flex;
    justify-content: center;
    align-items: center;

    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.logo{
    display:flex;
    align-items:center;
    gap:2px;

    text-decoration:none;
    user-select:none;
}

.bracket{
    color:var(--accent-hover);

    font-size:2.5rem;
    font-weight:600;

    line-height:1;
}

.letters{
    color:var(--accent-hover);

    font-size:2.2rem;
    font-weight:700;

    letter-spacing:-1px;
    line-height:1;
}

/* AdSense Placeholders styling */
.adsense-placeholder {
    width: 100%;
    max-width: 1000px;
    margin: 20px auto;
    padding: 10px;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 110px;
    text-align: center;
}

.adsense-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.top-banner {
    margin-top: 30px;
    margin-bottom: 10px;
}

.middle-banner {
    margin-top: 40px;
    margin-bottom: 20px;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 800px;
    padding: 0 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* Header Section */
.app-header {
    text-align: center;
    margin: 40px 0 30px;
}

.logo-area {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.logo-icon {
    width: 55px;
    height: 55px;
    color: var(--accent-hover); /* o el color que prefieras */
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

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

.main-title {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 550px;
    margin: 0 auto;
    font-weight: 400;
}

/* Main Card */
.main-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    transition: border-color 0.2s ease;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    background: rgba(30, 41, 59, 0.5);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--accent-hover);
    background: var(--accent-light);
}

.file-input-hidden {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon-container {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: border-color 0.2s;
}

.upload-zone:hover .upload-icon-container {
    border-color: var(--accent-hover);
}

.upload-icon {
    font-size: 1.8rem;
    color: var(--text-muted);
}

.upload-zone:hover .upload-icon {
    color: var(--text-main);
}

.upload-zone h3 {
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.upload-zone p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.file-limits {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 3px 10px;
    border-radius: 4px;
}

/* Selected Files Area */
.selected-files-container {
    margin-top: 20px;
    animation: fadeIn 0.2s ease forwards;
}

.files-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.files-header h4 {
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-clear {
    background: transparent;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

.btn-clear:hover {
    text-decoration: underline;
}

.files-list {
    list-style: none;
    max-height: 180px;
    overflow-y: auto;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.1);
}

.files-list li {
    padding: 8px 12px;
    border-bottom: 1px solid rgba(75, 85, 99, 0.15);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

.files-list li:last-child {
    border-bottom: none;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.file-info i {
    font-size: 1rem;
}

.file-info .fa-file-code {
    color: #60a5fa; /* Clean Soft Blue */
}

.file-info .fa-file-zipper {
    color: #f59e0b; /* Muted Gold */
}

.file-size {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.btn-convert {
    width: 100%;
    background: var(--accent-color);
    border: none;
    color: white;
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.15s ease;
}

.btn-icon-convert{
    width: 18px;
    height: 18px;
}

.btn-icon{
    width: 20px;
    height: 20px;
}
.btn-convert:hover {
    background: var(--accent-hover);
}

/* Progress & Loading */
.progress-container {
    text-align: center;
    padding: 20px 10px;
    animation: fadeIn 0.2s ease forwards;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top: 2px solid var(--accent-hover);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 0.8s linear infinite;
}

.progress-container h4 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.progress-container p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.progress-bar-bg {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--accent-hover);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Result Screen */
.result-container {
    text-align: center;
    padding: 15px 10px;
    animation: fadeIn 0.25s ease forwards;
}

.result-success-icon {
    font-size: 3rem;
    color: #10b981;
    margin-bottom: 12px;
}

.result-container h3 {
    font-size: 1.35rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.result-container p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 280px;
    margin: 0 auto;
}

.btn-download {
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.15s;
}

.btn-download:hover {
    background: var(--accent-hover);
}

.btn-restart {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 9px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.15s;
}

.btn-restart:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 30px 0;
}

.feature-card {
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 18px;
    text-align: center;
    transition: border-color 0.15s;
}

.feature-card:hover {
    border-color: var(--border-hover);
}

.feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--border-color); 
    flex-shrink: 0;
}

.feature-card:hover .feature-icon {
    color: var(--border-hover);
}


.feature-card i {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.feature-card h3 {
    font-size: 0.95rem;
    margin-bottom: 6px;
    font-weight: 500;
}

.feature-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Footer Section */
.app-footer {
    width: 100%;
    background: #090d16;
    border-top: 1px solid var(--border-color);
    padding: 24px 20px;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.app-footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-disclaimer {
    margin-top: 8px;
    font-size: 0.7rem !important;
    opacity: 0.65;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .main-title {
        font-size: 1.6rem;
    }
    
    .adsense-placeholder.top-banner {
        min-height: 60px;
    }
    
    .adsense-placeholder ins {
        max-width: 100%;
        height: auto;
    }
}