/* ===== VARIÁVEIS CSS ===== */
:root {
    --azul-verde: #59a9a9;
    --azul-escuro: #164476;
    --dourado: #e8a533;
    --branco: #ffffff;
    --cinza-claro: #f8fafc;
    --cinza-escuro: #334155;
    --cinza-borda: #e2e8f0;
    --sucesso: #10b981;
    --erro: #ef4444;
    --aviso: #f59e0b;
}

/* ===== ESTILOS ESPECÍFICOS PARA CADASTRO DE CUPOM ===== */

/* Main Content */
.cupom-section {
    padding: 40px 0;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    background-color: var(--cinza-claro);
}

.back-link {
    color: var(--azul-escuro);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--azul-verde);
    transform: translateX(-5px);
}

.cupom-card {
    background: var(--branco);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    max-width: 700px;
    margin: 0 auto;
}

.cupom-header {
    background: linear-gradient(135deg, var(--azul-escuro) 0%, var(--azul-verde) 100%);
    color: var(--branco);
    padding: 30px;
    text-align: center;
}

.cupom-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.cupom-header p {
    opacity: 0.9;
    margin-bottom: 0;
}

.cupom-body {
    padding: 40px;
}

/* Form Styles */
.form-label {
    font-weight: 600;
    color: var(--cinza-escuro);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-control, .form-select {
    border: 2px solid var(--cinza-borda);
    border-radius: 10px;
    padding: 12px 15px;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--azul-verde);
    box-shadow: 0 0 0 3px rgba(89, 169, 169, 0.1);
}

.form-text {
    font-size: 0.85rem;
    color: #6b7280;
}

/* File Upload */
.file-upload-area {
    border: 2px dashed var(--cinza-borda);
    border-radius: 10px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: var(--cinza-claro);
}

.file-upload-area:hover {
    border-color: var(--azul-verde);
    background: rgba(89, 169, 169, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--azul-verde);
    background: rgba(89, 169, 169, 0.1);
}

.file-upload-icon {
    font-size: 2.5rem;
    color: var(--azul-verde);
    margin-bottom: 15px;
}

.file-preview {
    margin-top: 20px;
    text-align: center;
}

.file-preview img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.file-info {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--cinza-escuro);
}

/* Progress Bar */
.progress {
    height: 6px;
    border-radius: 10px;
    margin-top: 10px;
    background-color: var(--cinza-borda);
}

.progress-bar {
    background-color: var(--azul-verde);
    border-radius: 10px;
    transition: width 0.3s ease;
}

/* Submit Button */
.btn-submit {
    background: var(--dourado);
    border: none;
    color: var(--azul-escuro);
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-submit:hover:not(:disabled) {
    background: #d5942b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232, 165, 51, 0.3);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.loading-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-radius: 50%;
    border-top-color: var(--azul-escuro);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Alerts */
.alert {
    border-radius: 10px;
    border: none;
    padding: 15px 20px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--sucesso);
    border-left: 4px solid var(--sucesso);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--erro);
    border-left: 4px solid var(--erro);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--aviso);
    border-left: 4px solid var(--aviso);
}

/* Checkbox */
.form-check-input:checked {
    background-color: var(--azul-verde);
    border-color: var(--azul-verde);
}

.form-check-label a {
    color: var(--azul-verde);
    font-weight: 500;
    text-decoration: none;
}

.form-check-label a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .cupom-body {
        padding: 30px 25px;
    }
    
    .cupom-header {
        padding: 25px 20px;
    }
    
    .cupom-header h1 {
        font-size: 1.5rem;
    }
    
    .file-upload-area {
        padding: 25px 15px;
    }
}

@media (max-width: 576px) {
    .cupom-section {
        padding: 30px 0;
    }
    
    .cupom-body {
        padding: 25px 20px;
    }
    
    .cupom-header {
        padding: 20px 15px;
    }
    
    .cupom-header h1 {
        font-size: 1.3rem;
    }
    
    .file-upload-area {
        padding: 20px 15px;
    }
    
    .file-upload-icon {
        font-size: 2rem;
    }
}