@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ===== RESET & VARIÁVEIS ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg:           #09090b;
    --bg-surface:   #141419;
    --bg-hover:     #1c1c23;
    --border:       #27272a;
    --border-focus: #00BFFF;
    --text:         #e4e4e7;
    --text-muted:   #71717a;
    --text-heading: #fafafa;
    --accent:       #00BFFF;
    --accent-dark:  #0099cc;
    --accent-glow:  rgba(0, 191, 255, 0.25);
    --error:        #f87171;
    --error-bg:     rgba(248, 113, 113, 0.1);
    --radius:       12px;
    --transition:   0.2s ease;
    --font:         'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 48px 20px;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

/* ===== HERO ===== */
.hero {
    text-align: center;
    animation: fadeUp 0.5s ease both;
}

.hero__title {
    font-size: clamp(28px, 5vw, 44px);
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.highlight {
    color: var(--accent);
}

.hero__subtitle {
    color: var(--text-muted);
    font-size: 16px;
    margin-top: 10px;
}

/* ===== INPUT SECTION ===== */
.input-section {
    width: 100%;
    max-width: 680px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: fadeUp 0.5s ease 0.1s both;
}

.prompt-input {
    resize: none;
    width: 100%;
    padding: 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-heading);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.6;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.prompt-input::placeholder {
    color: var(--text-muted);
}

.prompt-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ===== BOTÃO GERAR ===== */
.btn-gerar {
    width: 100%;
    padding: 15px;
    background: var(--accent);
    color: #000;
    font-family: var(--font);
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 0 0 0 var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-gerar:hover:not(:disabled) {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-gerar:active:not(:disabled) {
    transform: translateY(0);
}

.btn-gerar:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* ===== SPINNER ===== */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0,0,0,0.3);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
}

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

/* ===== ERRO ===== */
.erro {
    width: 100%;
    max-width: 680px;
    background: var(--error-bg);
    border: 1px solid var(--error);
    border-radius: var(--radius);
    color: var(--error);
    padding: 14px 16px;
    font-size: 14px;
    animation: fadeUp 0.3s ease both;
}

/* ===== RESULTADO ===== */
.resultado {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    animation: fadeUp 0.4s ease both;
}

.resultado__painel {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.resultado__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-hover);
}

.resultado__titulo {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* ===== BOTÃO COPIAR ===== */
.btn-copiar {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 12px;
    font-weight: 500;
    padding: 5px 10px;
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.btn-copiar:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-glow);
}

.btn-copiar--copiado {
    color: #4ade80 !important;
    border-color: #4ade80 !important;
}

/* ===== BLOCO DE CÓDIGO ===== */
.bloco-codigo {
    padding: 16px;
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    color: var(--accent);
    line-height: 1.8;
    overflow: auto;
    flex: 1;
    min-height: 350px;
    max-height: 450px;
    white-space: pre-wrap;
    word-break: break-word;
}

/* ===== PREVIEW ===== */
.preview {
    flex: 1;
    min-height: 350px;
    max-height: 450px;
    border: none;
    width: 100%;
    background: #fff;
}

/* ===== ANIMAÇÕES ===== */
@keyframes fadeUp {
    from { transform: translateY(16px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 720px) {
    body { padding: 32px 16px; }

    .resultado {
        grid-template-columns: 1fr;
    }

    .bloco-codigo,
    .preview {
        min-height: 260px;
        max-height: 320px;
    }
}

@media (max-width: 480px) {
    .hero__title { font-size: 26px; }
    body { padding: 24px 14px; }
}