/* === RESET E VARIÁVEIS === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #475569;
    --transition: all 0.3s ease;
}

/* === TIPOGRAFIA E BASE === */
html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, #1a1f35 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* === CONTAINER === */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* === HEADER === */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.2);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1em;
    color: #e0e7ff;
    font-weight: 300;
}

/* === LAYOUT PRINCIPAL === */
.main-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 30px;
    margin-bottom: 40px;
}

/* === FORMULÁRIO === */
.form-container {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.form-container h2 {
    font-size: 1.8em;
    margin-bottom: 25px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* === FIELDSETS === */
.form-section {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    background: rgba(148, 163, 184, 0.05);
}

.form-section legend {
    padding: 0 10px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1em;
}

/* === FORM GROUPS === */
.form-group {
    margin-bottom: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1em;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--background);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 0.85em;
}

/* === FILE INFO === */
.file-info {
    padding: 15px;
    background: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--success-color);
    border-radius: 6px;
    margin-top: 12px;
}

.file-info p {
    margin-bottom: 5px;
    font-size: 0.9em;
}

.file-info strong {
    color: var(--success-color);
}

/* === BOTÕES === */
.form-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #1a3a7d 100%);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
    transform: translateY(-2px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--surface-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    border-color: var(--text-secondary);
}

/* === PROGRESSO === */
.progress-container {
    margin-top: 30px;
    padding: 20px;
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 8px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.progress-header h3 {
    color: var(--primary-color);
    font-size: 1.1em;
}

#progressPercentage {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9em;
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background: var(--surface-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, #1e40af 100%);
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.5);
}

#progressMessage {
    margin-top: 12px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

/* === MENSAGENS === */
.message-container {
    margin-top: 25px;
}

.message {
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: slideIn 0.3s ease;
}

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

.message-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #d1fae5;
}

.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fee2e2;
}

.message-info {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: #dbeafe;
}

.message-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fef3c7;
}

.message::before {
    flex-shrink: 0;
    font-size: 1.2em;
}

.message-success::before { content: "✓"; }
.message-error::before { content: "✕"; }
.message-info::before { content: "ℹ"; }
.message-warning::before { content: "⚠"; }

/* === SIDEBAR === */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-box {
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.info-box h3 {
    color: var(--primary-color);
    font-size: 1.05em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-box ul {
    list-style: none;
}

.info-box li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    font-size: 0.9em;
    color: var(--text-secondary);
}

.info-box li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* === STATUS INDICATOR === */
#statusIndicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-top: 8px;
    animation: pulse 2s infinite;
}

.status-idle {
    background: var(--secondary-color);
}

.status-loading {
    background: var(--warning-color);
}

.status-success {
    background: var(--success-color);
}

.status-error {
    background: var(--error-color);
}

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

.info-box pre {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    overflow-x: auto;
    font-size: 0.8em;
    margin-top: 10px;
}

.info-box code {
    color: var(--success-color);
    font-family: 'Courier New', monospace;
}

#statusText {
    font-size: 0.9em;
    color: var(--text-secondary);
}

/* === RESPONSIVO === */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        padding: 25px 15px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .form-container h2 {
        font-size: 1.5em;
    }
    
    .form-section {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .sidebar {
        order: -1;
    }
    
    .info-box {
        padding: 15px;
    }
    
    .info-box h3 {
        font-size: 0.95em;
    }
    
    .info-box pre {
        font-size: 0.75em;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.4em;
    }
    
    .subtitle {
        font-size: 0.95em;
    }
    
    .form-container {
        padding: 15px;
    }
    
    .btn {
        padding: 10px 15px;
        font-size: 0.9em;
    }
    
    .form-group input {
        padding: 10px 12px;
        font-size: 16px; /* Previne zoom no mobile */
    }
}

/* === SCROLLBAR CUSTOMIZADO === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* === ACESSIBILIDADE === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* === FOCO PARA TECLADO === */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}