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

:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #222222;
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --accent: #e53935;
    --accent-hover: #c62828;
    --success: #43a047;
    --border: #333333;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== OFERTAS CONTAINER ===== */
.ofertas-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
}

/* ===== OFERTA CARD ===== */
.oferta-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #0a0a0a;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
    padding-top: 90px; /* espaço para o header com logo full-width */
}

.oferta-card.active {
    z-index: 2;
    transform: translateY(0);
    opacity: 1;
}

.oferta-card.next {
    z-index: 1;
    transform: translateY(100%);
    opacity: 0.95;
}

.oferta-card.prev {
    z-index: 0;
    transform: translateY(-100%);
    opacity: 0;
}

.oferta-card.swiping {
    transition: none;
}

/* ===== IMAGEM DA OFERTA ===== */
.oferta-imagem-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    background: #0a0a0a;
}

.oferta-imagem {
    width: 100%;
    height: 100%;
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
    background: transparent;
}

/* Placeholder enquanto carrega */
.oferta-imagem.loading {
    opacity: 0;
}

.oferta-imagem.loaded {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* ===== FALLBACK PARA PDF ===== */
.oferta-pdf-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    gap: 1.5rem;
    padding: 2rem;
}

.oferta-pdf-fallback .pdf-icon {
    width: 80px;
    height: 80px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.oferta-pdf-fallback .pdf-nome {
    font-size: 1.1rem;
    color: var(--text-primary);
    text-align: center;
    max-width: 80%;
    word-break: break-word;
}

.btn-pdf {
    padding: 0.8rem 2rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    text-decoration: none;
}

.btn-pdf:hover {
    background: var(--accent-hover);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0f0f0f;
    border-bottom: 1px solid #1a1a1a;
    pointer-events: none;
}

.header-logo {
    width: 100%;
    height: auto;
    max-height: 90px;
    object-fit: contain;
    pointer-events: auto;
    display: block;
}

/* ===== CONTADOR DE OFERTAS ===== */
.oferta-counter {
    position: fixed;
    top: 0.65rem;
    right: 1rem;
    z-index: 11;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.35);
    font-weight: 500;
    pointer-events: none;
}

/* ===== INDICADOR DE SWIPE ===== */
.swipe-indicator {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.75rem;
    opacity: 0.6;
    animation: float 2s ease-in-out infinite;
    pointer-events: none;
}

.swipe-indicator .arrow {
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-secondary);
    border-left: 0;
    border-top: 0;
    transform: rotate(45deg);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50% { transform: rotate(45deg) translateY(5px); }
}

/* ===== SCROLLBAR CUSTOMIZADA (DESKTOP) ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.loading-spinner.hidden {
    display: none;
}

/* ===== MENSAGEM VAZIA ===== */
.empty-state {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
    z-index: -1;
    pointer-events: none;
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1rem;
}

/* ===== RESPONSIVO ===== */
@media (min-width: 768px) {
    .header-logo {
        max-height: 100px;
    }

    .oferta-card {
        padding-top: 100px;
    }
}
}