:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #475569;
    --background: #f1f5f9;
    --surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #10b981;
    --success-hover: #059669;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.5;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
    padding: 15px 0;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-area i {
    font-size: 24px;
}

.logo-area h1 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.text-sm {
    font-size: 12px !important;
}

.user-menu-container {
    position: relative;
}

.user-button {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border-radius: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.user-button:hover { 
    background: rgba(255, 255, 255, 0.25); 
}

.btn-senha {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.btn-senha:hover {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--surface);
    min-width: 220px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    z-index: 1000;
    overflow: hidden;
    animation: dropFadeIn 0.2s ease;
}

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

.dropdown-menu.show {
    display: block;
}

.dropdown-header {
    padding: 15px 20px;
    background: #f8fafc;
    color: var(--text-main);
    font-size: 14px;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

.dropdown-menu a:hover {
    background: var(--background);
}

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 0;
}

.btn-logout-dropdown {
    color: var(--danger) !important;
}

.btn-logout-dropdown:hover {
    background: #fee2e2 !important;
}

.tabs-container {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    margin-top: 10px;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    background: rgba(37, 99, 235, 0.05);
    color: var(--primary);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
    animation: modalFadeIn 0.3s ease-out;
}

.tab-content.active {
    display: block;
}

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

.software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.software-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.software-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: #cbd5e1;
}

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

.software-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.badge {
    padding: 6px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-categoria {
    background-color: #f1f5f9;
    color: var(--secondary);
    border: 1px solid #e2e8f0;
}

.software-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.software-desc {
    font-size: 13px;
    color: var(--text-muted);
    flex-grow: 1;
    margin-bottom: 20px;
    line-height: 1.5;
}

.software-footer {
    border-top: 1px solid var(--border);
    padding-top: 15px;
    margin-top: auto;
}

.w-100 {
    width: 100%;
}

.btn-detalhes {
    background-color: #f1f5f9;
    color: var(--primary-dark);
    border: 1px solid #cbd5e1;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: 0.2s;
}

.btn-detalhes:hover {
    background-color: #e2e8f0;
}

.upload-section {
    background: var(--surface);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
}

.section-header h2 {
    color: var(--text-main);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.section-header p {
    color: var(--text-muted);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-main);
    font-weight: 500;
}

.input-group input, .form-select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.2s;
    font-family: inherit;
    color: var(--text-main);
}

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

.form-actions {
    text-align: right;
    border-top: 1px solid var(--border);
    padding-top: 25px;
    margin-top: 10px;
}

.btn-enviar {
    background-color: var(--success);
    color: white;
    border: none;
    padding: 14px 28px;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.btn-enviar:hover:not(:disabled) {
    background-color: var(--success-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.alert-success, .alert-error {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.modal-frontend {
    display: none; 
    position: fixed;
    z-index: 1050; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.7);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.modal-content-frontend {
    background-color: var(--surface);
    padding: 30px 40px;
    border-radius: 12px;
    width: 90%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: modalFadeIn 0.3s ease-out;
}

.close-modal-frontend {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

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

@media (max-width: 768px) {
    .tabs-container {
        flex-direction: column;
    }
    form > div[style] {
        grid-template-columns: 1fr !important;
    }
}

.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 12px;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 5px;
    padding-bottom: 10px;
}

.icon-grid::-webkit-scrollbar {
    width: 6px;
}

.icon-grid::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.icon-option {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.icon-option:hover {
    background: #eff6ff;
    border-color: var(--primary);
    color: var(--primary);
    transform: scale(1.1);
}