/**
 * SHEEP CRUSH — Game Board & Tile Styling
 * Mobile-first, responsive, flat design
 */

:root {
    --tile-base: 44px;  /* mobile */
    --tile-gap: 6px;
    --radius: 10px;
    
    /* Colors */
    --cream: #F6F4EF;
    --olive: #7A7F6A;
    --rust: #B85C38;
    --sky: #6FA9D8;
    --dark: #3A3A38;
    --charcoal: #1F1F1D;
    --light-bg: #ECE8DF;
}

/* ========================================================================
   GAME HEADER
   ======================================================================== */

.sc-header {
    margin: 2rem 0;
    text-align: center;
}

.sc-header .section-title {
    margin-bottom: 0.5rem;
}

.sc-subtitle {
    color: var(--olive);
    font-style: italic;
    font-size: clamp(0.875rem, 2vw, 1rem);
    margin-bottom: 1rem;
}

.sc-toolbar {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    align-items: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.sc-score {
    font-weight: 600;
    color: var(--charcoal);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

/* ========================================================================
   BOARD CONTAINER
   ======================================================================== */

.sc-board-wrap {
    margin: 2rem 0;
}

.sc-board-wrap .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 500px;
    margin: 0 auto;
}

.sc-board {
    display: grid;
    grid-template-columns: repeat(8, var(--tile-base));
    grid-template-rows: repeat(8, var(--tile-base));
    gap: var(--tile-gap);
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: rgba(236, 232, 223, 0.25);
    border-radius: 20px;
    width: 100%;
    justify-content: center;
}

/* ========================================================================
   TILES — Base Styling
   ======================================================================== */

.sc-tile {
    width: 100%;
    aspect-ratio: 1;
    border: none;
    border-radius: var(--radius);
    background: var(--cream);
    display: grid;
    place-items: center;
    font-size: 1.75rem;
    cursor: pointer;
    transition: transform 80ms ease, background-color 80ms ease;
    position: relative;
    touch-action: manipulation;
}

.sc-tile:hover {
    transform: scale(1.08);
}

.sc-tile:focus {
    outline: 2px solid var(--charcoal);
    outline-offset: -2px;
}

.sc-tile.selected {
    outline: 3px solid var(--olive);
    outline-offset: -1px;
    transform: scale(0.96);
    background: var(--light-bg);
}

/* ========================================================================
   TILE COLORS — Sheep Types
   ======================================================================== */

.sc-tile.tile-sheep-cream {
    background: var(--cream);
}

.sc-tile.tile-sheep-olive {
    background: #9AA887;
}

.sc-tile.tile-sheep-rust {
    background: #D67851;
}

.sc-tile.tile-sheep-sky {
    background: #93C2E6;
}

.sc-tile.tile-sheep-dark {
    background: var(--dark);
    color: var(--cream);
}

/* ========================================================================
   SPECIAL TILES
   ======================================================================== */

.sc-tile.special-row {
    background: #6B5E4A;
    color: var(--cream);
}

.sc-tile.special-col {
    background: var(--rust);
    color: var(--cream);
}

/* ========================================================================
   TILE STATES
   ======================================================================== */

.sc-tile.clearing {
    animation: fadeOut 300ms ease-out forwards;
}

.sc-tile.falling {
    animation: fall 300ms ease-in forwards;
}

/* ========================================================================
   ANIMATIONS
   ======================================================================== */

@keyframes swapLeft {
    from { transform: translateX(0); }
    to { transform: translateX(calc(-1 * (var(--tile-base) + var(--tile-gap)))); }
}

@keyframes swapRight {
    from { transform: translateX(0); }
    to { transform: translateX(calc(var(--tile-base) + var(--tile-gap))); }
}

@keyframes swapUp {
    from { transform: translateY(0); }
    to { transform: translateY(calc(-1 * (var(--tile-base) + var(--tile-gap)))); }
}

@keyframes swapDown {
    from { transform: translateY(0); }
    to { transform: translateY(calc(var(--tile-base) + var(--tile-gap))); }
}

@keyframes fadeOut {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0.7);
    }
}

@keyframes fall {
    from {
        opacity: 0;
        transform: translateY(-80px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================================================
   INSTRUCTIONS & FOOTER
   ======================================================================== */

.sc-instructions {
    text-align: center;
    color: var(--charcoal);
    font-size: 0.85rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 1rem auto 2rem;
}

/* ========================================================================
   RESPONSIVE — Tablet (768px+)
   ======================================================================== */

@media (min-width: 768px) {
    :root {
        --tile-base: 54px;
        --tile-gap: 8px;
    }
    
    .sc-board {
        padding: 2rem;
    }
    
    .sc-header {
        margin: 2.5rem 0;
    }
}

/* ========================================================================
   RESPONSIVE — Desktop (1024px+)
   ======================================================================== */

@media (min-width: 1024px) {
    :root {
        --tile-base: 64px;
        --tile-gap: 10px;
    }
    
    .sc-board {
        padding: 2.5rem;
    }
    
    .sc-tile {
        font-size: 2rem;
    }
}

/* Header Section */
.sc-header {
    margin: 2rem 0;
    text-align: center;
}

.sc-header .section-title {
    margin-bottom: 0.5rem;
}

.sc-subtitle {
    color: var(--olive);
    font-style: italic;
    font-size: clamp(0.875rem, 2vw, 1rem);
    margin-bottom: 1rem;
}

/* Toolbar */
.sc-toolbar {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    align-items: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.sc-score {
    font-weight: 600;
    color: var(--charcoal);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

/* Board Wrap */
.sc-board-wrap {
    margin: 2rem 0;
}

.sc-board-wrap .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 500px;
    margin: 0 auto;
}

.sc-board {
    display: grid;
    grid-template-columns: repeat(8, var(--tile-base));
    grid-template-rows: repeat(8, var(--tile-base));
    gap: var(--tile-gap);
    justify-content: center;
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: rgba(236, 232, 223, 0.25);
    border-radius: 20px;
    width: 100%;
}

/* Tiles */
.sc-tile {
    width: 100%;
    aspect-ratio: 1;
    border: none;
    border-radius: var(--radius);
    background: var(--cream);
    display: grid;
    place-items: center;
    font-size: 1.75rem;
    color: var(--charcoal);
    cursor: pointer;
    transition: transform 80ms ease, background-color 80ms ease;
    position: relative;
    touch-action: manipulation;
}

.sc-tile:hover {
    transform: scale(1.08);
}

.sc-tile:focus {
    outline: 2px solid var(--charcoal);
    outline-offset: -2px;
}

.sc-tile.selected {
    outline: 3px solid var(--olive);
    outline-offset: -1px;
    transform: scale(0.96);
    background: var(--light-bg);
}

.sc-tile.swap-preview {
    transform: scale(1.05);
    background: #DDD8CF;
}

.sc-tile.clearing {
    animation: fadeOut 300ms ease-out forwards;
}

.sc-tile.falling {
    animation: fall 300ms ease-in forwards;
}

/* Swap animation - tiles move toward each other */
@keyframes swapLeft {
    from { transform: translateX(0); }
    to { transform: translateX(calc(-1 * (var(--tile-base) + var(--tile-gap)))); }
}

@keyframes swapRight {
    from { transform: translateX(0); }
    to { transform: translateX(calc(var(--tile-base) + var(--tile-gap))); }
}

@keyframes swapUp {
    from { transform: translateY(0); }
    to { transform: translateY(calc(-1 * (var(--tile-base) + var(--tile-gap)))); }
}

@keyframes swapDown {
    from { transform: translateY(0); }
    to { transform: translateY(calc(var(--tile-base) + var(--tile-gap))); }
}

/* Fade out animation for clearing tiles */
@keyframes fadeOut {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(0.7); }
}

/* Fall animation - tiles drop down from top */
@keyframes fall {
    0% { opacity: 0; transform: translateY(-80px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Tile Type Colors */
.tile-sheep-cream {
    background: var(--cream);
}

.tile-sheep-olive {
    background: #9AA887;
}

.tile-sheep-rust {
    background: #D67851;
}

.tile-sheep-sky {
    background: #93C2E6;
}

.tile-sheep-dark {
    background: #3A3A38;
    color: #F6F4EF;
}

.tile-bell {
    background: var(--bell);
    color: #ECE8DF;
}

.tile-wheat {
    background: var(--wheat);
    color: var(--charcoal);
}

/* Instructions */
.sc-instructions {
    text-align: center;
    color: var(--charcoal);
    font-size: 0.875rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto;
}

/* Buttons */
.button-secondary {
    padding: 0.6rem 1.2rem;
}

/* Tablet breakpoint */
@media (min-width: 768px) {
    :root {
        --tile-size: 54px;
        --tile-gap: 8px;
    }
    
    .sc-header {
        margin: 2.5rem 0;
    }
}

/* Desktop breakpoint */
@media (min-width: 1024px) {
    :root {
        --tile-size: 60px;
        --tile-gap: 10px;
    }
    
    .sc-board-wrap .container {
        max-width: 560px;
    }
}