@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

:root {
    --primary-color: #e63946;
    --primary-glow: rgba(230, 57, 70, 0.3);
    --secondary-color: #457b9d;
    --accent-color: #a8dadc;
    --bg-color: #f1faee;
    --text-color: #1d3557;
    --card-bg: #ffffff;
    --card-hover: #f8f9fa;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-radius: 14px;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary-color: #ff4d6d;
    --primary-glow: rgba(255, 77, 109, 0.25);
    --secondary-color: #48cae4;
    --accent-color: #1a3a4a;
    --bg-color: #0b090a;
    --text-color: #f5f3f4;
    --card-bg: #161a1d;
    --card-hover: #1e2226;
    --border-color: rgba(255, 255, 255, 0.06);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    padding-bottom: 40px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

/* ============================================= */
/* Header & Stats                                */
/* ============================================= */
header {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 8px;
    z-index: 100;
    border: 1px solid var(--border-color);
}

.title-area {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.title-area h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#theme-toggle {
    background: rgba(0, 0, 0, 0.04);
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

#theme-toggle:hover {
    transform: rotate(30deg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.stat-card {
    background: var(--bg-color);
    padding: 12px 8px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-value {
    display: block;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    opacity: 0.7;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ============================================= */
/* Navigation Index                              */
/* ============================================= */
.nav-index {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.nav-index-title {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-index-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
}

.nav-index-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-color);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.82rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.nav-index-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.nav-index-item:hover .nav-item-counter {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.nav-index-special {
    border-left: 3px solid var(--secondary-color);
}

.nav-index-special:hover {
    background: var(--secondary-color);
}

.nav-item-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-item-counter {
    font-size: 0.7rem;
    background: var(--border-color);
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 700;
    flex-shrink: 0;
    margin-left: 8px;
    transition: var(--transition);
}

/* ============================================= */
/* Filters Bar                                   */
/* ============================================= */
.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 16px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.filters-bar input,
.filters-bar select {
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    flex: 1;
    min-width: 140px;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition);
}

.filters-bar input:focus,
.filters-bar select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* ============================================= */
/* Section Headers                               */
/* ============================================= */
.team-section {
    margin-bottom: 30px;
    scroll-margin-top: 100px;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding: 14px 18px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    color: white;
    box-shadow: var(--shadow);
}

.section-header h2 {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    flex: 1;
}

.section-counter {
    font-size: 0.85rem;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
}

.back-to-top {
    color: white;
    opacity: 0.7;
    font-size: 0.9rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    transition: var(--transition);
}

.back-to-top:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.special-section .section-header {
    background: linear-gradient(135deg, var(--secondary-color), #2a6f97);
}

/* ============================================= */
/* Sticker Grid                                  */
/* ============================================= */
.sticker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.sticker-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.sticker-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: var(--transition);
}

.sticker-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.sticker-card:hover::before {
    opacity: 1;
}

.sticker-card.owned {
    border-color: var(--secondary-color);
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--card-hover) 100%);
}

.sticker-card.owned::before {
    opacity: 1;
    background: var(--secondary-color);
}

.sticker-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.sticker-num {
    background: var(--primary-color);
    color: white;
    padding: 3px 10px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
}

.sticker-cat {
    font-size: 0.65rem;
    background: var(--accent-color);
    color: var(--text-color);
    padding: 3px 8px;
    border-radius: 6px;
    text-transform: uppercase;
    font-weight: 600;
}

.sticker-name {
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.sticker-team {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 14px;
    font-weight: 500;
}

.sticker-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
    font-size: 0.85rem;
    font-weight: 500;
}

.checkbox-container input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--secondary-color);
    cursor: pointer;
}

.repetidos-control {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-color);
    padding: 4px 8px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.repetidos-control button {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
}

.repetidos-control button:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.repetidos-control button:active {
    transform: scale(0.95);
}

.repetidos-val {
    font-weight: 700;
    min-width: 22px;
    text-align: center;
    font-size: 0.9rem;
}

/* ============================================= */
/* Buttons                                       */
/* ============================================= */
.btn {
    border: none;
    border-radius: 10px;
    padding: 10px 16px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: scale(0.97);
}

/* ============================================= */
/* Responsive                                    */
/* ============================================= */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sticker-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }

    .nav-index-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

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

    .filters-bar {
        flex-direction: column;
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .title-area h1 {
        font-size: 1.1rem;
    }

    .nav-index-grid {
        grid-template-columns: 1fr 1fr;
    }

    header {
        position: relative;
        top: 0;
    }
}

/* ============================================= */
/* Printing                                      */
/* ============================================= */
@media print {

    .filters-bar,
    header,
    .btn,
    .sticker-actions,
    .nav-index,
    .back-to-top {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .sticker-card {
        box-shadow: none;
        border: 1px solid #eee;
    }
}