/*
    Dungeon Dweller - game page styles.

    This file is not purely presentational. It holds three things the simulation
    depends on, so read it as part of the runtime:

    1. ENTITY DIMENSIONS. Every entity class creates its element, then measures it
       with getBoundingClientRect() and uses the result as its hitbox. The sizes
       below ARE the collision boxes - change `.enemy`'s height and you have
       changed how the game plays. A new entity type must be given an explicit
       size here or it will measure as 0x0 and never collide with anything.

    2. SPRITE STATE. JavaScript never assigns a background-image. It writes
       data-facing="up|down|left|right" and toggles `.walking`; the selectors here
       turn that into the right image and walk cycle. Renaming those selectors
       breaks sprites silently.

    3. THE EXPLOSION TRANSLATION. See @keyframes explode at the foot of the file.

    Paths are relative to html/game.html's directory, hence the "../" prefixes.

    Section order: layout, player, enemies, projectiles, scenery, HUD, overlay,
    keyframes, media queries.
*/

@font-face {
    font-family: 'medieval';
    src: url("./fonts/MedievalSharp-Regular.ttf") format("truetype");
    font-display: swap;
}

/* Shared palette. --hp/--mp also colour the enemy bars and HUD meters, so a
   change here propagates through every gauge in the game. */
:root {
    --hp: #d2373c;
    --hp-glow: #ff6b5e;
    --mp: #3f6fe0;
    --mp-glow: #6fa8ff;
    --gold: #e8c87a;
    --ink: #f3e6cd;
    --panel: rgba(14, 11, 9, 0.72);
    --panel-edge: rgba(232, 200, 122, 0.35);
}

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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    background: radial-gradient(ellipse at 50% 35%, #2a2018 0%, #140f0b 55%, #070505 100%);
    color: var(--ink);
    font-family: medieval, "Palatino Linotype", Georgia, serif;
}

#container {
    height: 90vh;
    width: 90vw;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000;
    border-radius: 10px;
    box-shadow: 0 0 0 2px rgba(232, 200, 122, 0.18), 0 24px 70px rgba(0, 0, 0, 0.75);
}

#game-area {
    height: 89vh;
    width: 89vw;
    position: relative;
    overflow: hidden;
    background-image: url("../images/stoneFloor.jpg");
    border-radius: 8px;
    z-index: 2;
}

/* Every moving entity is positioned with `transform` from the arena's origin so
   the browser can composite it without a layout pass. */
#player,
.enemy,
.enemySpecial,
.fireBall,
.spear,
.rock,
.rock1,
.lake_surroundings,
.lake_surroundings1 {
    position: absolute;
    top: 0;
    left: 0;
    will-change: transform;
}

/* ------------------------------------------------------------------ player */
/* 100x50 is the player's hitbox as well as its appearance - the Player class
   measures this element on construction. The sprite inside is deliberately
   slightly smaller, so the collision box hugs the body rather than the artwork. */
#player {
    height: 100px;
    width: 50px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    z-index: 2;
}

#player.is-dead {
    filter: grayscale(1) brightness(0.5);
}

.icon {
    height: 90px;
    width: 40px;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

/* Facing and walk state are driven by attributes/classes, not by rewriting
   inline styles on every animation frame. */
.icon[data-facing="down"] {
    background-image: url("../images/character_down.png");
}

.icon[data-facing="up"] {
    background-image: url("../images/character_up.png");
}

.icon[data-facing="left"] {
    background-image: url("../images/character_left.png");
}

.icon[data-facing="right"] {
    background-image: url("../images/character_right.png");
}

.icon.walking[data-facing="down"] {
    animation: characterMoveDown 500ms step-end infinite;
}

.icon.walking[data-facing="up"] {
    animation: characterMoveUp 500ms step-end infinite;
}

.icon.walking[data-facing="left"] {
    animation: characterMoveLeft 500ms step-end infinite;
}

.icon.walking[data-facing="right"] {
    animation: characterMoveRight 500ms step-end infinite;
}

.player-bars {
    position: absolute;
    top: -2px;
    left: 50%;
    width: 46px;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 2px;
    border-radius: 3px;
    background: rgba(0, 0, 0, 0.55);
}

.health-bar,
.mana-bar {
    height: 4px;
    width: 100%;
    border-radius: 2px;
    transition: width 120ms linear;
}

.health-bar {
    background-color: var(--hp);
}

.mana-bar {
    background-color: var(--mp);
}

/* ------------------------------------------------------------------ enemies */
/* Class names here are the contract with ENEMY_VARIANTS in src/elements.js:
   .enemy / .enemySpecial are the bodies (and therefore the hitboxes), .iconEnemy
   / .iconEnemySpecial the sprite layers, .health-barEnemy* the bar fills. Both
   variants share the same skeleton artwork, scaled up for the brute. */
.enemy,
.enemySpecial {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    z-index: 2;
}

.enemy {
    height: 120px;
    width: 70px;
}

.enemySpecial {
    height: 220px;
    width: 140px;
}

.iconEnemy,
.iconEnemySpecial {
    width: 100%;
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.iconEnemy {
    height: 110px;
}

.iconEnemySpecial {
    height: 200px;
    filter: drop-shadow(0 0 12px rgba(210, 55, 60, 0.55)) saturate(1.3);
}

.iconEnemy[data-facing="down"],
.iconEnemySpecial[data-facing="down"] {
    background-image: url("../images/skelly_down.png");
}

.iconEnemy[data-facing="up"],
.iconEnemySpecial[data-facing="up"] {
    background-image: url("../images/skelly_up.png");
}

.iconEnemy[data-facing="left"],
.iconEnemySpecial[data-facing="left"] {
    background-image: url("../images/skelly_left.png");
}

.iconEnemy[data-facing="right"],
.iconEnemySpecial[data-facing="right"] {
    background-image: url("../images/skelly_right.png");
}

.enemy-bar-track {
    width: 100%;
    height: 6px;
    margin-bottom: 2px;
    border-radius: 3px;
    background: rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.enemySpecial .enemy-bar-track {
    height: 10px;
}

.health-barEnemy,
.health-barEnemySpecial {
    height: 100%;
    width: 100%;
    background-color: var(--hp);
    transition: width 120ms linear;
}

.health-barEnemySpecial {
    background: linear-gradient(90deg, #8a1f22, var(--hp-glow));
}

/* ------------------------------------------------------------- projectiles */
.fireBall {
    height: 60px;
    width: 100px;
    background-image: url("../images/fireball.png");
    background-size: cover;
    z-index: 600;
    filter: drop-shadow(0 0 10px rgba(255, 140, 40, 0.7));
}

.fireBall.exploding {
    background-image: url("../images/explosion.png");
    background-size: 100% 100%;
    height: 100px;
    width: 100px;
    animation: explode 300ms ease-out forwards;
}

.spear {
    height: 90px;
    width: 70px;
    background-image: url("../images/spear.png");
    background-size: 100% 100%;
    z-index: 700;
    opacity: 0;
    visibility: hidden;
}

.spear.is-active {
    opacity: 1;
    visibility: visible;
}

/* ------------------------------------------------------------------ scenery */
.rock,
.rock1 {
    background-image: url("../images/rock.png");
    background-size: cover;
}

.rock {
    height: 140px;
    width: 140px;
}

.rock1 {
    height: 70px;
    width: 70px;
}

.lake_surroundings,
.lake_surroundings1 {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    /* Was a remote opengameart.org image; a gradient renders the same dirt ring
       with no third-party request. */
    background:
        radial-gradient(circle at 30% 25%, #6b5433, #3d2f1c 70%),
        #3d2f1c;
    box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.6);
}

.lake_surroundings {
    height: 100px;
    width: 100px;
}

.lake_surroundings1 {
    height: 200px;
    width: 200px;
}

.lake,
.lake1 {
    position: relative;
    background-image: url("../images/lava.jpg");
    background-size: cover;
    border-radius: 6px;
    box-shadow: 0 0 18px rgba(255, 110, 30, 0.45);
}

.lake {
    height: 90px;
    width: 90px;
}

.lake1 {
    height: 190px;
    width: 190px;
}

/* ---------------------------------------------------------------------- HUD */
/* Entities depth-sort themselves into z-index 2..~500, so the UI sits well
   above that band rather than being overlapped by a sprite near the bottom.
   The full stacking plan: entities 2-500, fireballs 600, spear 700, low-health
   vignette 1500, start hint 1900, HUD 2000, overlay 3000. New UI belongs above
   1500; new field entities belong in the depth-sorted band.
   `pointer-events: none` keeps the panels from swallowing clicks meant for the
   arena beneath them. */
#hud {
    position: absolute;
    inset: 0 0 auto 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    z-index: 2000;
    pointer-events: none;
}

.hud-panel {
    background: var(--panel);
    border: 1px solid var(--panel-edge);
    border-radius: 10px;
    padding: 10px 14px;
    backdrop-filter: blur(3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}

.hud-vitals {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 260px;
}

.hud-meter {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hud-meter-label {
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    color: var(--gold);
    width: 2.2em;
}

.hud-meter-value {
    font-size: 0.9rem;
    width: 2.6em;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.hud-track {
    position: relative;
    flex: 1;
    height: 14px;
    border-radius: 7px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.8);
    overflow: hidden;
}

.hud-fill {
    height: 100%;
    width: 100%;
    border-radius: 6px;
    transition: width 160ms ease-out;
}

.hud-fill-health {
    background: linear-gradient(90deg, #8a1f22, var(--hp) 60%, var(--hp-glow));
}

.hud-fill-mana {
    background: linear-gradient(90deg, #22397a, var(--mp) 60%, var(--mp-glow));
}

.hud-stats {
    display: flex;
    gap: 22px;
}

.hud-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.hud-stat-label {
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gold);
    opacity: 0.85;
}

.hud-stat-value {
    font-size: 1.5rem;
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

#start-hint {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--panel);
    border: 1px solid var(--panel-edge);
    font-size: 0.95rem;
    white-space: nowrap;
    z-index: 1900;
    pointer-events: none;
    transition: opacity 400ms ease;
}

#start-hint.is-hidden {
    opacity: 0;
}

#start-hint kbd {
    font-family: inherit;
    background: rgba(232, 200, 122, 0.16);
    border: 1px solid var(--panel-edge);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--gold);
}

/* Pulses only while the player is badly hurt; otherwise it costs nothing. */
#low-health {
    position: absolute;
    inset: 0;
    z-index: 1500;
    pointer-events: none;
    opacity: 0;
    box-shadow: inset 0 0 140px 40px rgba(180, 20, 20, 0.75);
    transition: opacity 300ms ease;
}

#low-health.is-active {
    opacity: 1;
    animation: lowHealthPulse 1.4s ease-in-out infinite;
}

/* ------------------------------------------------------------------ overlay */
#overlay {
    position: absolute;
    inset: 0;
    z-index: 3000;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(6, 4, 3, 0.72);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 220ms ease;
}

#overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

/* A stretched background image cannot contain arbitrary content, so the card
   is drawn in CSS - it stays legible at any size and drops a 100KB request. */
#overlay-card {
    width: min(480px, 82vw);
    padding: clamp(28px, 5vh, 44px) clamp(28px, 5vw, 52px);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 18px;
    align-items: center;
    color: var(--ink);
    background:
        linear-gradient(180deg, rgba(46, 34, 22, 0.96), rgba(18, 13, 9, 0.97));
    border: 1px solid var(--panel-edge);
    border-radius: 14px;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(232, 200, 122, 0.18),
        0 26px 60px rgba(0, 0, 0, 0.7);
}

#overlay-title {
    font-size: clamp(1.8rem, 5vh, 3rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--gold);
    text-shadow: 0 2px 0 rgba(0, 0, 0, 0.7);
}

#overlay[data-variant="gameover"] #overlay-title {
    color: var(--hp-glow);
}

#overlay-stats {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 100%;
}

#overlay-stats:empty {
    display: none;
}

.overlay-stat {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 1.05rem;
    padding: 6px 2px;
    border-bottom: 1px solid rgba(232, 200, 122, 0.16);
}

.overlay-stat-label {
    opacity: 0.8;
}

.overlay-stat-value {
    font-variant-numeric: tabular-nums;
    color: var(--gold);
}

#overlay-actions {
    display: flex;
    gap: 24px;
    margin-top: 6px;
}

.overlay-action {
    font-family: inherit;
    font-size: clamp(1.1rem, 3vh, 1.6rem);
    font-weight: 700;
    color: var(--ink);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 12px;
    border-radius: 6px;
}

.overlay-action:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

.popping:hover,
.popping:focus-visible {
    animation: popping 500ms infinite;
}

/* --------------------------------------------------------------- keyframes */
@keyframes popping {
    0%, 100% { transform: translateY(0); }
    25% { transform: translateY(-7.5px); }
    50% { transform: translateY(-15px); }
    75% { transform: translateY(-7.5px); }
}

/* A CSS animation overrides the inline transform, so the translation has to be
   carried through the keyframes (via --ex/--ey set at impact) - otherwise the
   blast snaps to the arena's top-left corner. */
@keyframes explode {
    0% { opacity: 1; transform: translate3d(var(--ex, 0px), var(--ey, 0px), 0) scale(0.7); }
    40% { opacity: 1; transform: translate3d(var(--ex, 0px), var(--ey, 0px), 0) scale(1.15); }
    100% { opacity: 0; transform: translate3d(var(--ex, 0px), var(--ey, 0px), 0) scale(1.3); }
}

@keyframes lowHealthPulse {
    0%, 100% { opacity: 0.55; }
    50% { opacity: 1; }
}

@keyframes characterMoveDown {
    0% { background-image: url("../images/animations/character/moveDown/1.png"); }
    11.11% { background-image: url("../images/animations/character/moveDown/2.png"); }
    22.22% { background-image: url("../images/animations/character/moveDown/3.png"); }
    33.33% { background-image: url("../images/animations/character/moveDown/4.png"); }
    44.44% { background-image: url("../images/animations/character/moveDown/5.png"); }
    55.55% { background-image: url("../images/animations/character/moveDown/6.png"); }
    66.66% { background-image: url("../images/animations/character/moveDown/7.png"); }
    77.77% { background-image: url("../images/animations/character/moveDown/8.png"); }
    88.88% { background-image: url("../images/animations/character/moveDown/9.png"); }
    100% { background-image: url("../images/animations/character/moveDown/1.png"); }
}

@keyframes characterMoveUp {
    0% { background-image: url("../images/animations/character/moveUp/1.png"); }
    11.11% { background-image: url("../images/animations/character/moveUp/2.png"); }
    22.22% { background-image: url("../images/animations/character/moveUp/3.png"); }
    33.33% { background-image: url("../images/animations/character/moveUp/4.png"); }
    44.44% { background-image: url("../images/animations/character/moveUp/5.png"); }
    55.55% { background-image: url("../images/animations/character/moveUp/6.png"); }
    66.66% { background-image: url("../images/animations/character/moveUp/7.png"); }
    77.77% { background-image: url("../images/animations/character/moveUp/8.png"); }
    88.88% { background-image: url("../images/animations/character/moveUp/9.png"); }
    100% { background-image: url("../images/animations/character/moveUp/1.png"); }
}

@keyframes characterMoveLeft {
    0% { background-image: url("../images/animations/character/moveLeft/1.png"); }
    11.11% { background-image: url("../images/animations/character/moveLeft/2.png"); }
    22.22% { background-image: url("../images/animations/character/moveLeft/3.png"); }
    33.33% { background-image: url("../images/animations/character/moveLeft/4.png"); }
    44.44% { background-image: url("../images/animations/character/moveLeft/5.png"); }
    55.55% { background-image: url("../images/animations/character/moveLeft/6.png"); }
    66.66% { background-image: url("../images/animations/character/moveLeft/7.png"); }
    77.77% { background-image: url("../images/animations/character/moveLeft/8.png"); }
    88.88% { background-image: url("../images/animations/character/moveLeft/9.png"); }
    100% { background-image: url("../images/animations/character/moveLeft/1.png"); }
}

@keyframes characterMoveRight {
    0% { background-image: url("../images/animations/character/moveRight/1.png"); }
    11.11% { background-image: url("../images/animations/character/moveRight/2.png"); }
    22.22% { background-image: url("../images/animations/character/moveRight/3.png"); }
    33.33% { background-image: url("../images/animations/character/moveRight/4.png"); }
    44.44% { background-image: url("../images/animations/character/moveRight/5.png"); }
    55.55% { background-image: url("../images/animations/character/moveRight/6.png"); }
    66.66% { background-image: url("../images/animations/character/moveRight/7.png"); }
    77.77% { background-image: url("../images/animations/character/moveRight/8.png"); }
    88.88% { background-image: url("../images/animations/character/moveRight/9.png"); }
    100% { background-image: url("../images/animations/character/moveRight/1.png"); }
}

@media (prefers-reduced-motion: reduce) {
    .popping:hover,
    .popping:focus-visible,
    #low-health.is-active {
        animation: none;
    }

    .hud-fill,
    .health-bar,
    .mana-bar,
    .health-barEnemy,
    .health-barEnemySpecial {
        transition: none;
    }
}

@media (max-width: 900px) {
    #hud {
        flex-direction: column;
        gap: 10px;
    }

    .hud-vitals {
        min-width: 0;
        width: 100%;
    }

    #start-hint {
        font-size: 0.8rem;
    }
}