/* reset & variáveis */
:root {
    --color-bg: #0B0F17;
    --color-card: #151C28;
    --color-input: #1E2738;
    --color-border: #2A364F;
    --color-text: #FFFFFF;
    --color-text-muted: #94A3B8;
    --color-yellow: #FFC700;
    --color-yellow-hover: #E6B200;
    --color-black: #000000;
    --color-success: #10B981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #EF4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Card Principal */
.card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

/* Header & Logo IELECTRIC */
.card-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.lightning-icon {
    font-size: 2rem;
    color: var(--color-yellow);
    filter: drop-shadow(0 0 8px rgba(255, 199, 0, 0.4));
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--color-yellow);
    text-transform: uppercase;
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Seletor de Modo de Conta */
.account-selector-container {
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.selector-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-yellow);
}

.account-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.account-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.85rem;
    background-color: var(--color-input);
    border: 1.5px solid var(--color-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.account-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.account-card:hover {
    border-color: rgba(255, 199, 0, 0.5);
}

.account-card.active {
    border-color: var(--color-yellow);
    background-color: rgba(255, 199, 0, 0.08);
    box-shadow: 0 0 0 1px var(--color-yellow);
}

.account-icon {
    font-size: 1.3rem;
}

.account-details {
    display: flex;
    flex-direction: column;
}

.account-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text);
}

.account-desc {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    line-height: 1.2;
}

/* Seções */
.section {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-yellow);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), var(--color-yellow), var(--color-border), transparent);
    margin: 2rem 0;
}

/* Formulário */
.form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.required {
    color: var(--color-yellow);
}

.form-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    background-color: var(--color-input);
    border: 1.5px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-yellow);
    box-shadow: 0 0 0 3px rgba(255, 199, 0, 0.2);
}

.form-group input::placeholder {
    color: #64748B;
}

.form-group input[type="file"] {
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
    cursor: pointer;
}

.form-group input[type="file"]::file-selector-button {
    background-color: var(--color-border);
    color: var(--color-yellow);
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-weight: 600;
    margin-right: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.form-group input[type="file"]::file-selector-button:hover {
    background-color: rgba(255, 199, 0, 0.2);
}

/* COMPONENTE TREE VIEW INTERATIVO (V2.8) */
.tree-view-container {
    background-color: var(--color-input);
    border: 1.5px solid var(--color-border);
    border-radius: 10px;
    max-height: 280px;
    overflow-y: auto;
    padding: 0.6rem;
    font-size: 0.88rem;
}

.tree-loading {
    padding: 1rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.tree-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.tree-node {
    margin: 0.15rem 0;
}

.tree-header {
    display: flex;
    align-items: center;
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s, color 0.2s;
    gap: 0.4rem;
}

.tree-header:hover {
    background-color: rgba(255, 199, 0, 0.12);
}

/* Estado de Seleção da Pasta */
.tree-header.selected {
    background-color: var(--color-yellow) !important;
    color: var(--color-black) !important;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(255, 199, 0, 0.4);
}

.tree-header.selected .tree-icon,
.tree-header.selected .tree-toggle {
    color: var(--color-black) !important;
}

.tree-toggle {
    font-size: 0.7rem;
    width: 16px;
    text-align: center;
    color: var(--color-yellow);
    transition: transform 0.2s ease;
}

.tree-toggle.collapsed {
    transform: rotate(-90deg);
}

.tree-icon {
    font-size: 1rem;
}

.tree-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-children {
    padding-left: 1.25rem;
    list-style: none;
    border-left: 1px dashed var(--color-border);
    margin-left: 0.6rem;
}

.tree-children.collapsed {
    display: none;
}

/* Badge de Pasta Selecionada */
.selected-folder-badge {
    margin-top: 0.5rem;
    padding: 0.6rem 0.8rem;
    background-color: rgba(255, 199, 0, 0.1);
    border: 1px solid var(--color-yellow);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-yellow);
}

.badge-icon {
    font-size: 1rem;
}

.badge-text {
    font-weight: 600;
    word-break: break-all;
}

/* Botões */
.btn-primary {
    width: 100%;
    margin-top: 0.5rem;
    padding: 1rem;
    background-color: var(--color-yellow);
    color: var(--color-black);
    border: none;
    border-radius: 10px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    min-height: 48px;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-yellow-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 199, 0, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-yellow);
    border: 1px solid var(--color-yellow);
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.btn-secondary:hover:not(:disabled) {
    background-color: rgba(255, 199, 0, 0.1);
}

.btn-primary:disabled,
.btn-secondary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Spinners */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.2);
    border-top-color: var(--color-black);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-small {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 199, 0, 0.3);
    border-top-color: var(--color-yellow);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.hidden {
    display: none !important;
}

/* Alertas */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success {
    background-color: var(--color-success-bg);
    border: 1px solid var(--color-success);
    color: #A7F3D0;
}

.alert-error {
    background-color: var(--color-error-bg);
    border: 1px solid var(--color-error);
    color: #FCA5A5;
}

.alert-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.alert-content h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.alert-content p {
    font-size: 0.85rem;
    line-height: 1.4;
}

.path-display {
    margin-top: 0.75rem;
    padding: 0.6rem 0.8rem;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.8rem;
    word-break: break-all;
    color: var(--color-yellow);
    border-left: 3px solid var(--color-yellow);
}

.file-link {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--color-yellow);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: underline;
}

.file-link:hover {
    color: var(--color-yellow-hover);
}

/* Footer */
.footer {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}