:root {
    /* Cores Principais */
    --primary: #6c5ce7;
    --primary-dark: #5649c0;
    --secondary: #00cec9;
    --secondary-dark: #00a8a4;
    --accent: #fdcb6e;
    --success: #00b894;
    --danger: #ff7675;
    --dark: #2d3436;
    --darker: #1a1e21;
    --light: #f8f9fa;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    
    /* Glass Effect */
    --glass-bg: rgba(30, 30, 50, 0.75);
    --glass-border: rgba(108, 92, 231, 0.4);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Transições */
    --transition: all 0.3s ease;
    
    /* Bordas */
    --border-radius: 16px;
    --border-radius-lg: 24px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--light);
    min-height: 100vh;
    overflow-x: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
    padding: 0 20px;
}

.app-header {
    display: flex;
    justify-content: center; /* Centralizado */
    align-items: center;
    padding: 20px 0;
    margin-bottom: 20px;
    position: relative;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.logo-icon i {
    font-size: 24px;
    color: white;
}

.logo h1 {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.header-actions {
    position: absolute;
    right: 20px;
}

.icon-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--light);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 18px;
}

.icon-btn:hover {
    background: rgba(108, 92, 231, 0.3);
    transform: translateY(-2px);
}

/* Barra de ação fixa no topo */
.top-action-bar {
    position: sticky;
    top: 10px;
    display: flex;
    gap: 15px;
    justify-content: center;
    z-index: 100;
    margin-bottom: 20px;
}

.btn-action {
    background: linear-gradient(120deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 14px 25px;
    border-radius: 16px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.5);
    min-width: 200px;
}

.btn-action:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 25px rgba(108, 92, 231, 0.7);
}

.btn-action i {
    font-size: 18px;
}

/* Menu de navegação acima da imagem */
.top-navigation {
    display: flex;
    gap: 10px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 15px;
    margin-bottom: 25px;
    box-shadow: var(--glass-shadow);
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    background: rgba(45, 45, 75, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--light);
    border-radius: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 15px;
}

.nav-item:hover {
    background: rgba(108, 92, 231, 0.25);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.nav-item i {
    font-size: 18px;
}

.main-content {
    display: flex;
    gap: 30px;
    flex: 1;
    margin-bottom: 40px;
}

/* Área de preview com design inicial bonito */
.preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.canvas-wrapper {
    background: rgba(0, 0, 0, 0.35);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
    min-height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 2px solid var(--glass-border);
}

.preview-area {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.preview-content {
    text-align: center;
    padding: 40px;
    color: var(--light);
    max-width: 90%;
}

.preview-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 206, 201, 0.2));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    border: 2px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
}

.preview-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 35px rgba(108, 92, 231, 0.4);
}

.preview-icon i {
    font-size: 64px;
    color: var(--secondary);
}

.preview-content h2 {
    font-size: 32px;
    margin-bottom: 15px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.preview-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 35px;
    line-height: 1.6;
}

.preview-upload-btn {
    background: linear-gradient(120deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.6);
    margin-top: 10px;
}

.preview-upload-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(108, 92, 231, 0.8);
}

.preview-upload-btn i {
    font-size: 22px;
}

.preview-subtext {
    margin-top: 25px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.preview-subtext i {
    color: var(--success);
}

#previewImage {
    max-width: 95%;
    max-height: 85vh;
    border: 3px solid rgba(108, 92, 231, 0.7);
    box-shadow: 0 0 30px rgba(0, 206, 201, 0.4);
    transition: var(--transition);
    display: none;
}

#previewImage.visible {
    display: block;
}

#previewImage:hover {
    transform: scale(1.01);
}

/* Propriedades da Imagem */
.image-properties {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--glass-shadow);
}

.properties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 15px;
}

.properties-grid p {
    background: rgba(0, 0, 0, 0.2);
    padding: 12px 15px;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    font-size: 15px;
}

.properties-grid strong {
    color: var(--secondary);
}

.placeholder-text {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--gray);
    font-style: italic;
    padding: 20px;
}

/* Painéis laterais */
.tools-panel {
    width: 380px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 30px;
}

.panel-section {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--secondary);
    font-weight: 700;
}

.section-title i {
    font-size: 22px;
}

/* Ajustes de Cor */
.adjustment-group {
    margin-bottom: 25px;
}

.adjustment-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--light);
}

.slider {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    background: linear-gradient(to right, var(--primary-dark), var(--secondary-dark));
    border-radius: 4px;
    outline: none;
    margin-top: 5px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--light);
    cursor: pointer;
    box-shadow: 0 0 10px var(--secondary);
    transition: var(--transition);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px var(--secondary);
}

.value-display {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 10px;
    border-radius: 12px;
    font-weight: 600;
    color: var(--accent);
}

/* Efeitos */
.effects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.effect-card {
    background: rgba(45, 45, 75, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 18px 15px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: white; /* Texto branco para todos os botões */
}

.effect-card:hover {
    background: rgba(108, 92, 231, 0.25);
    transform: translateY(-3px);
    border-color: var(--secondary);
}

.effect-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 206, 201, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--secondary);
}

.effect-card span {
    font-weight: 500;
    font-size: 14px;
    color: white; /* Texto branco para os nomes dos efeitos */
}

/* Redimensionamento */
.preset-sizes {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.25);
    color: var(--light);
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(0, 206, 201, 0.2);
}

.custom-dimensions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dimension-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ratio-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 5px;
}

.ratio-control input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.ratio-control label {
    font-weight: 500;
    cursor: pointer;
    color: var(--light);
}

/* Rodapé */
.app-footer {
    text-align: center;
    padding: 25px 0;
    border-top: 1px solid var(--glass-border);
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    margin-top: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-top: 10px;
}

.footer-links a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Modal de Ajuda */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: linear-gradient(135deg, var(--darker), #252a3d);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 800px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
    position: relative;
    overflow: hidden;
    transform: translateY(20px);
    animation: modalAppear 0.4s forwards;
}

@keyframes modalAppear {
    to {
        transform: translateY(0);
    }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 32px;
    color: var(--light);
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--danger);
}

.modal-content h2 {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding: 25px 30px;
    border-bottom: 1px solid var(--glass-border);
    font-size: 28px;
}

.help-content {
    padding: 25px 30px;
    max-height: 60vh;
    overflow-y: auto;
}

.help-section {
    margin-bottom: 30px;
}

.help-section h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.help-section ol, .help-section ul {
    padding-left: 25px;
    margin-top: 12px;
    line-height: 1.8;
}

.help-section li {
    margin-bottom: 10px;
    position: relative;
}

.help-section li:before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    position: absolute;
    left: -20px;
}

.close-help {
    display: block;
    margin: 20px auto 30px;
    padding: 14px 45px;
}

/* Estado de drag over */
.preview-area.drag-over {
    background: rgba(0, 206, 201, 0.1);
    border: 3px dashed var(--secondary);
}

.preview-area.drag-over .preview-icon {
    background: rgba(0, 206, 201, 0.3);
    transform: scale(1.1);
}

/* Responsividade */
@media (max-width: 1400px) {
    .top-navigation {
        flex-wrap: wrap;
    }
    
    .nav-item {
        flex: 1 0 200px;
        justify-content: center;
    }
}

@media (max-width: 1200px) {
    .main-content {
        flex-direction: column;
    }
    
    .tools-panel {
        width: 100%;
        order: 2; /* Coloca os painéis abaixo do preview em telas menores */
    }
    
    .preview-container {
        order: 1;
    }
    
    .canvas-wrapper {
        min-height: 450px;
    }
}

@media (max-width: 768px) {
    .effects-grid {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 26px;
    }
    
    .section-title {
        font-size: 18px;
    }
    
    .canvas-wrapper {
        min-height: 350px;
    }
    
    .preview-icon {
        width: 90px;
        height: 90px;
    }
    
    .preview-icon i {
        font-size: 48px;
    }
    
    .preview-content h2 {
        font-size: 26px;
    }
    
    .preview-content p {
        font-size: 16px;
    }
    
    .preview-upload-btn {
        padding: 14px 30px;
        font-size: 16px;
    }
    
    .top-action-bar {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-action {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .app-header {
        flex-direction: column;
        gap: 15px;
    }
    
    .top-navigation {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-item {
        width: 100%;
        justify-content: center;
    }
    
    .canvas-wrapper {
        min-height: 300px;
    }
    
    .panel-section {
        padding: 20px 15px;
    }
    
    .preview-icon {
        width: 80px;
        height: 80px;
    }
    
    .preview-icon i {
        font-size: 40px;
    }
    
    .preview-content h2 {
        font-size: 24px;
    }
    
    .preview-content p {
        font-size: 15px;
    }
    
    .preview-upload-btn {
        padding: 12px 25px;
        font-size: 15px;
    }
    
    .preview-subtext {
        font-size: 13px;
    }
    
    .help-section ol, .help-section ul {
        padding-left: 20px;
    }
}