:root {
    --bg-top: #ffea75;
    --bg-bottom: #ffda33;
    --text-dark: #1a1a1a;
    --success-green: #22c55e;
    --alert-red: #ef4444;
    --border-light: #e5e7eb;
    --badge-yellow: #fce700;
}

body { 
    font-family: 'Roboto', sans-serif; 
    background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
    background-attachment: fixed;
    color: var(--text-dark); 
    margin: 0;
    padding: 0 1rem 4rem 1rem; 
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    overflow-x: hidden;
}

/* --- HEADER & RESPONSIVE SPACING --- */
.header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem; 
    text-align: center;
    max-width: 800px;
    margin-bottom: 2rem;
    padding-top: 1.5rem;
}

.top-bar {
    font-family: 'Oswald', sans-serif;
    font-size: 0.95rem;
    letter-spacing: 1px;
    color: #555;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar a {
    color: #000;
    text-decoration: none;
    font-weight: 700;
    background-color: #fff;
    padding: 4px 14px;
    border-radius: 20px;
    border: 1px solid #ccc;
    transition: all 0.2s;
}

.top-bar a:hover {
    background-color: #000;
    color: #fff;
    border-color: #000;
}

h1 { 
    font-family: 'Oswald', sans-serif;
    color: var(--text-dark); 
    font-size: 3rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.instruction {
    color: #222;
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
    max-width: 500px;
    line-height: 1.5;
}

.duplicate-instruction {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.95rem;
    color: #444;
    background-color: rgba(255, 255, 255, 0.6);
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    margin: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.duplicate-instruction svg {
    width: 20px;
    height: 20px;
    stroke: #000;
    min-width: 20px;
}

.stats-text {
    font-family: 'Oswald', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.btn-export {
    background-color: #ffffff;
    color: #000;
    border: 2px solid var(--border-light);
    padding: 12px 28px;
    border-radius: 30px;
    font-family: 'Oswald', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 0.5rem;
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    background-color: #f9fafb;
}

.btn-export::after {
    content: '›';
    font-size: 1.6rem;
    line-height: 1;
    margin-left: 4px;
}

/* --- GRID Y CARTAS --- */
.capture-area {
    background: transparent; 
    padding: 20px;
    border-radius: 16px;
    width: 100%;
    max-width: 1200px;
}

.capture-area.export-mode {
    width: 1200px !important;
    max-width: 1200px !important;
    padding: 40px !important;
}

.capture-area.export-mode .grid {
    grid-template-columns: repeat(6, 1fr) !important;
    gap: 20px !important;
}

.capture-area.export-mode .card:not(.duplicate) .duplicate-btn {
    display: none !important;
}

.watermark {
    display: none;
    text-align: center;
    color: var(--text-dark);
    font-family: 'Oswald', sans-serif;
    font-size: 2.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin-bottom: 30px;
}

.watermark-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.wm-status {
    font-size: 1.5rem;
    color: #fff;
    background-color: var(--alert-red);
    padding: 6px 24px;
    border-radius: 30px;
    border: 3px solid #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    letter-spacing: 1px;
}

.wm-status.complete {
    background-color: var(--success-green);
    border-color: #fff;
}

.wm-legend {
    font-size: 1.2rem;
    color: #fff;
    background-color: #1f2937;
    padding: 6px 24px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 3px solid #374151;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    letter-spacing: 1px;
}

.wm-legend svg {
    width: 20px;
    height: 20px;
    stroke: var(--badge-yellow);
}

/* --- MARCA DE AGUA INFERIOR (@NITERFX) --- */
.watermark-footer {
    display: none;
    text-align: center;
    color: #444;
    font-family: 'Oswald', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 40px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.capture-area.export-mode .watermark-footer {
    display: block; /* Solo se muestra al exportar la imagen */
}

.grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); 
    gap: 24px; 
    justify-content: center;
}

.card {
    aspect-ratio: 2.5/3.5;
    border-radius: 10px; 
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    position: relative;
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    background-color: #d1d5db; 
    overflow: hidden; 
}

.card-overlay {
    position: absolute;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(20, 25, 35, 0.85); 
    opacity: 0;
    z-index: 1;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
    z-index: 0;
}

/* --- BOTÓN DE DUPLICADO --- */
.duplicate-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: rgba(31, 41, 55, 0.8);
    color: #fff;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0; 
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 5;
    border: 2px solid #374151;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    pointer-events: none; 
}

.duplicate-btn svg {
    width: 18px;
    height: 18px;
}

.card.active .duplicate-btn {
    opacity: 0.6;
    transform: scale(1);
    pointer-events: auto; 
}

.card.active .duplicate-btn:hover {
    opacity: 1;
    background-color: #4b5563;
}

.card.active.duplicate .duplicate-btn {
    opacity: 1;
    transform: scale(1);
    background-color: var(--badge-yellow);
    color: #000;
    border-color: #000;
}

/* --- IDENTIFICADORES Y CHECKMARKS --- */
.card-number {
    position: absolute;
    bottom: 8px;
    left: 8px;
    background-color: var(--badge-yellow);
    color: #000;
    padding: 4px 10px;
    border-radius: 20px;
    font-family: 'Oswald', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    border: 2px solid #000;
    z-index: 4; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.checkmark {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--success-green);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 3; 
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    border: 3px solid #fff;
}

.card:not(.active):hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}

.card.active { 
    transform: scale(0.98);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.card.active .card-overlay {
    opacity: 1;
}

.card.active .card-number {
    background-color: #374151;
    color: #9ca3af;
    border-color: #1f2937;
}

.card.active .checkmark {
    opacity: 1;
    transform: scale(1);
}

/* --- RESPONSIVE MOBILE --- */
@media (max-width: 600px) {
    .grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 12px; }
    h1 { font-size: 2.2rem; }
    .watermark-badges { flex-direction: column; gap: 10px; }
    .duplicate-instruction { padding: 10px 15px; font-size: 0.85rem; }
    .header { gap: 1rem; }
}