/* Ilusão 3D — mesma linguagem visual do site (direção A "Ficha técnica", spec §5).
   HTML estático: os tokens são repetidos aqui porque o arquivo não lê o globals.css do Next. */

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

:root {
    --papel: #F2F4F1;
    --superficie: #FFFFFF;
    --grafite: #1B2620;
    --grafite-2: #4B5A50;
    --placa: #0F4D32;
    --placa-claro: #D5E5DA;
    --linha: #C3CFC6;
    --muted: #E8EDE9;

    --bg: var(--papel);
    --bg-card: var(--superficie);
    --fg: var(--grafite);
    --fg-muted: var(--grafite-2);
    --primary: var(--placa);
    --border: var(--linha);
    --radius: 4px;
    --header-h: 64px;
    --font-sans: 'Geist', system-ui, -apple-system, sans-serif;
    --font-mono: 'Geist Mono', ui-monospace, monospace;
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ===== Cabeçalho (igual ao do site) ===== */
.app-header {
    height: var(--header-h);
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    flex-shrink: 0;
    z-index: 50;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.wordmark {
    display: inline-flex;
    text-decoration: none;
}
.wordmark img {
    display: block;
    height: 28px;
    width: auto;
}

.crumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--fg-muted);
    min-width: 0;
}
.crumbs a {
    color: var(--fg-muted);
    text-decoration: none;
}
.crumbs a:hover {
    color: var(--fg);
}
.crumbs h1 {
    font-size: 14px;
    font-weight: 600;
    color: var(--fg);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Visualizador 3D ===== */
#viewer-container {
    flex: 1;
    position: relative;
    min-height: 0;
    background: var(--bg);
}

#viewer {
    display: block;
    width: 100%;
    height: 100%;
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--fg-muted);
    font-size: 0.9rem;
    pointer-events: none;
    background: rgba(243, 245, 245, 0.85);
    transition: opacity 0.3s;
}
.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
    .spinner { animation-duration: 2.4s; }
}

/* Botão de carregar fonte */
.field-upload { flex: 0 0 auto !important; }
.btn-upload {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--fg-muted);
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: border-color 0.2s, color 0.2s;
    white-space: nowrap;
}
.btn-upload:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.btn-upload.loaded {
    border-style: solid;
    border-color: var(--primary);
    color: var(--primary);
}

/* Botões de vista */
#view-buttons {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 4px;
    z-index: 10;
}
#view-buttons.hidden { display: none; }
.view-btn {
    padding: 5px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--fg-muted);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}
.view-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.view-btn[aria-pressed="true"] {
    color: var(--primary);
    border-color: var(--primary);
}

/* ===== Painel de controles ===== */
#controls {
    flex-shrink: 0;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
}

.controls-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-row {
    display: flex;
    gap: 0.75rem;
}
.control-row > .field {
    flex: 1;
    min-width: 0;
}

/* ===== Símbolos ===== */
.symbol-row {
    align-items: center;
    gap: 0.5rem;
}
.symbol-label {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0 !important;
    white-space: nowrap;
    flex-shrink: 0;
}
.symbol-palette {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}
.symbol-btn {
    width: 34px;
    height: 34px;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
    font-family: 'Segoe UI Symbol', sans-serif;
}
.symbol-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ===== Campos ===== */
label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--fg);
    margin-bottom: 4px;
}
.label-hint {
    font-weight: 400;
    color: var(--fg-muted);
}
.slider-value {
    margin-left: auto;
    font-family: var(--font-mono);
    color: var(--primary);
    font-size: 0.75rem;
}

input[type="text"],
select {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.2s;
}
input[type="text"]:focus,
select:focus {
    border-color: var(--primary);
    outline: 2px solid var(--primary);
    outline-offset: -1px;
}
input[type="text"]::placeholder {
    color: var(--grafite-2);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234A5A61' stroke-width='2.5' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}
select option {
    background: var(--bg-card);
    color: var(--fg);
}

/* Slider */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}
input[type="range"]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 6px;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 2px;
    background: var(--primary);
    cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 2px;
    background: var(--primary);
    border: none;
    cursor: pointer;
}

/* ===== Seletor de fonte ===== */
.custom-select {
    position: relative;
}
.select-trigger {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: border-color 0.2s;
}
.select-trigger:hover {
    border-color: var(--primary);
}
.select-trigger svg {
    flex-shrink: 0;
    color: var(--fg-muted);
    transition: transform 0.2s;
}
.custom-select.open .select-trigger svg {
    transform: rotate(180deg);
}

.select-dropdown {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    max-height: 260px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 4px;
    box-shadow: 0 -8px 24px rgba(30, 42, 48, 0.12);
    z-index: 100;
    display: none;
}
.custom-select.open .select-dropdown {
    display: block;
}

.font-option {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.font-option:hover,
.font-option:focus {
    background: var(--muted);
    outline: none;
}
.font-option:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}
.font-option.selected {
    background: var(--placa-claro);
    color: var(--primary);
}

.select-dropdown::-webkit-scrollbar {
    width: 6px;
}
.select-dropdown::-webkit-scrollbar-track {
    background: transparent;
}
.select-dropdown::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* ===== Botões ===== */
.buttons-row {
    gap: 0.75rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 42px;
    padding: 0 24px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
    flex: 1;
}
.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Âmbar é exclusivo do CTA comercial do site; aqui a ação principal é petróleo. */
.btn-primary {
    background: var(--primary);
    color: #FFFFFF;
}
.btn-primary:hover:not(:disabled) {
    background: #0A3A25;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--fg);
    border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

/* ===== Nota ===== */
.note {
    font-size: 0.78rem;
    color: var(--fg-muted);
    line-height: 1.5;
    text-align: center;
}

/* ===== Rodapé ===== */
.app-footer {
    flex-shrink: 0;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--fg-muted);
    border-top: 1px solid var(--border);
    background: var(--bg);
}
.app-footer a {
    color: var(--primary);
}

/* ===== Responsivo ===== */
@media (max-width: 600px) {
    html, body {
        height: auto;
        overflow: auto;
    }
    main {
        overflow: visible;
    }
    #viewer-container {
        flex: none;
        height: 55vh;
        min-height: 280px;
    }
    .header-inner {
        padding: 0 1rem;
    }
    .wordmark img {
        height: 24px;
    }
    .control-row {
        flex-direction: column;
        gap: 0.5rem;
    }
    .controls-inner {
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }
    .btn {
        height: 38px;
        font-size: 0.85rem;
    }
}