:root {
    --font-sans: 'Inter', -apple-system, sans-serif;
    --bg: #0A0E1A;
    --surface: #141929;
    --surface-2: #1C2238;
    --border: rgba(239, 68, 68, .12);
    --border-hover: rgba(239, 68, 68, .3);
    --primary: #EF4444;
    --primary-glow: rgba(239, 68, 68, .2);
    --accent: #F97316;
    --text: #F1F5F9;
    --text-muted: #94A3B8;
    --text-dim: #64748B;
    --gold: #F59E0B;
    --purple: #A855F7;
    --cyan: #06B6D4;
    --green: #4ADE80;
    --radius: 16px;
    --radius-sm: 10px;
    --transition: .25s ease
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
    background-image: radial-gradient(ellipse at 30% 0%, rgba(239, 68, 68, .04) 0%, transparent 50%), radial-gradient(ellipse at 70% 100%, rgba(168, 85, 247, .04) 0%, transparent 50%)
}

.header {
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    background: rgba(10, 14, 26, .85);
    position: sticky;
    top: 0;
    z-index: 50
}

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

.logo {
    display: flex;
    align-items: center;
    gap: .65rem
}

.logo-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 68, 68, .1);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 1.2rem
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.header-actions {
    display: flex;
    gap: .5rem
}

.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem 3rem
}

.deck-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem
}

.deck-bar select {
    padding: .45rem .75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: .85rem;
    outline: none;
    cursor: pointer
}

.card-count {
    font-size: .8rem;
    color: var(--text-muted)
}

/* Card Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.25rem
}

/* Card */
.poke-card {
    perspective: 800px;
    height: 300px;
    cursor: pointer
}

.poke-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform .6s ease;
    transform-style: preserve-3d
}

.poke-card.flipped .poke-card-inner {
    transform: rotateY(180deg)
}

.poke-card-front,
.poke-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: var(--radius);
    overflow: hidden;
    border: 2px solid var(--border)
}

.poke-card-back {
    transform: rotateY(180deg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center
}

/* Rarity */
.rarity-common .poke-card-front,
.rarity-common .poke-card-back {
    background: var(--surface);
    border-color: var(--border)
}

.rarity-rare .poke-card-front,
.rarity-rare .poke-card-back {
    background: linear-gradient(145deg, #1a2340, #1e3a5f);
    border-color: rgba(6, 182, 212, .35)
}

.rarity-epic .poke-card-front,
.rarity-epic .poke-card-back {
    background: linear-gradient(145deg, #2a1040, #3d1a6f);
    border-color: rgba(168, 85, 247, .35)
}

.rarity-legendary .poke-card-front,
.rarity-legendary .poke-card-back {
    background: linear-gradient(145deg, #3a2800, #5c3d0e);
    border-color: rgba(245, 158, 11, .4);
    box-shadow: 0 0 20px rgba(245, 158, 11, .15)
}

.pc-image {
    width: 100%;
    height: 140px;
    object-fit: cover;
    background: var(--surface-2)
}

.pc-image-placeholder {
    width: 100%;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    font-size: 3rem
}

.pc-info {
    padding: .65rem .75rem
}

.pc-name {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: .2rem
}

.pc-type {
    font-size: .6rem;
    padding: .15rem .4rem;
    border-radius: 999px;
    display: inline-block;
    font-weight: 600
}

.type-common {
    background: rgba(148, 163, 184, .15);
    color: var(--text-muted)
}

.type-rare {
    background: rgba(6, 182, 212, .15);
    color: var(--cyan)
}

.type-epic {
    background: rgba(168, 85, 247, .15);
    color: var(--purple)
}

.type-legendary {
    background: rgba(245, 158, 11, .15);
    color: var(--gold)
}

.pc-rarity {
    position: absolute;
    top: .5rem;
    right: .5rem;
    font-size: .6rem;
    font-weight: 700;
    padding: .15rem .4rem;
    border-radius: 999px
}

.rarity-badge-common {
    background: rgba(148, 163, 184, .2);
    color: var(--text-muted)
}

.rarity-badge-rare {
    background: rgba(6, 182, 212, .2);
    color: var(--cyan)
}

.rarity-badge-epic {
    background: rgba(168, 85, 247, .2);
    color: var(--purple)
}

.rarity-badge-legendary {
    background: rgba(245, 158, 11, .2);
    color: var(--gold)
}

/* Back */
.pc-back-desc {
    font-size: .75rem;
    color: var(--text-muted);
    margin-bottom: .65rem;
    line-height: 1.4
}

.pc-stats {
    display: flex;
    flex-direction: column;
    gap: .35rem
}

.stat-row {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .7rem
}

.stat-label {
    width: 60px;
    color: var(--text-dim);
    text-align: right
}

.stat-bar {
    flex: 1;
    height: 6px;
    background: var(--surface-2);
    border-radius: 999px;
    overflow: hidden
}

.stat-fill {
    height: 100%;
    border-radius: 999px;
    transition: width .5s ease
}

.stat-val {
    width: 20px;
    text-align: right;
    font-weight: 600;
    font-size: .65rem
}

.pc-back-actions {
    display: flex;
    gap: .35rem;
    margin-top: auto;
    padding-top: .5rem
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    backdrop-filter: blur(4px)
}

.modal-content {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: fadeIn .3s ease
}

.modal-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem
}

.study-content {
    max-width: 420px;
    text-align: center
}

.study-card {
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    margin-bottom: 1rem
}

.study-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem
}

.study-progress {
    font-size: .85rem;
    color: var(--text-muted);
    font-weight: 600
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .75rem
}

.full-width {
    grid-column: 1/-1
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .3rem
}

.form-group label,
.form-label {
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-muted);
    display: block;
    margin-bottom: .3rem
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: .45rem .65rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: .85rem;
    outline: none;
    resize: vertical
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow)
}

.stats-builder {
    margin-top: .75rem
}

.stats-list {
    display: flex;
    flex-direction: column;
    gap: .4rem;
    margin-bottom: .5rem
}

.stat-input-row {
    display: flex;
    gap: .4rem;
    align-items: center
}

.stat-input-row input {
    flex: 1;
    padding: .35rem .5rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: .8rem;
    outline: none
}

.stat-input-row input[type="number"] {
    width: 60px;
    flex: 0 0 60px
}

.stat-input-row button {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    font-size: .9rem;
    border-radius: 4px
}

.stat-input-row button:hover {
    background: rgba(248, 113, 113, .15);
    color: #F87171
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: .85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s ease;
    white-space: nowrap
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    padding: .55rem 1rem;
    font-weight: 600;
    box-shadow: 0 4px 16px var(--primary-glow)
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--primary-glow)
}

.btn--ghost {
    background: transparent;
    color: var(--text-muted);
    padding: .4rem .7rem
}

.btn--ghost:hover {
    background: rgba(239, 68, 68, .08);
    color: var(--text)
}

.btn--sm {
    font-size: .75rem;
    padding: .3rem .5rem
}

.btn--danger {
    background: rgba(239, 68, 68, .15);
    color: var(--primary);
    padding: .3rem .5rem;
    font-size: .7rem
}

.form-actions {
    display: flex;
    gap: .65rem
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-dim);
    font-size: .9rem;
    grid-column: 1/-1
}

.hidden {
    display: none !important
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: .75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    font-weight: 500;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .4);
    opacity: 0;
    pointer-events: none;
    transition: all .4s cubic-bezier(.16, 1, .3, 1);
    z-index: 200
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0)
}

@media(max-width:768px) {
    .header {
        padding: .75rem 1rem
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: .5rem
    }

    .main {
        padding: 1rem
    }

    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: .75rem
    }

    .form-grid {
        grid-template-columns: 1fr
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}