@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@700;800;900&family=Orbitron:wght@400;700;900&display=swap');

:root {
    --primary:      #6366f1;
    --primary-dark: #4338ca;
    --secondary:    #8b5cf6;
    --accent:       #f43f5e;
    --success:      #10b981;
    --warning:      #f59e0b;
    --neon-blue:    #38bdf8;
    --text-light:   #f1f5f9;
    --text-muted:   #94a3b8;
    --bg:           #030712;
    --panel:        rgba(15, 20, 40, 0.7);
    --border:       rgba(255, 255, 255, 0.08);
    --glow-primary: 0 0 20px rgba(99,102,241,0.5);
    --glow-accent:  0 0 20px rgba(244,63,94,0.5);
    --glass-blur:   blur(20px);
    --radius:       22px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0; padding: 0;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

body, html {
    width: 100%; height: 100%;
    overflow: hidden;
    background: #000;
    font-family: 'Nunito', sans-serif;
    touch-action: none;
    color: var(--text-light);
}

/* ─────────── GAME CONTAINER ─────────── */
#game-container {
    position: relative;
    width: 100%; height: 100%;
    max-width: 500px;
    margin: 0 auto;
    background: radial-gradient(ellipse at 50% 0%, #12182e 0%, #050b15 60%, #020611 100%);
    overflow: hidden;
    box-shadow: 0 0 60px #000, inset 0 0 40px rgba(99,102,241,0.08);
    border-left:  1px solid rgba(255,255,255,0.06);
    border-right: 1px solid rgba(255,255,255,0.06);
}

/* ─────────── CANVASES ─────────── */
#background-canvas {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
}

canvas {
    position: absolute; top: 0; left: 0;
    display: block;
    width: 100%; height: 100%;
    touch-action: none;
}

#game-canvas { z-index: 1; }

/* ─────────── UI LAYER ─────────── */
.ui-layer {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.ui-layer > * { pointer-events: auto; }

.hidden { display: none !important; }

/* ─────────── HUD TOP ─────────── */
.hud-top {
    position: absolute;
    top: max(env(safe-area-inset-top, 0px), 12px);
    left: 12px; right: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    gap: 8px;
}

.hud-item {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 6px 14px;
    display: flex; flex-direction: column; align-items: center;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glow-primary), inset 0 1px 0 rgba(255,255,255,0.1);
    min-width: 64px;
}

.hud-label {
    font-size: 9px; font-weight: 900;
    color: var(--neon-blue);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1px;
}

.hud-value {
    font-family: 'Orbitron', monospace;
    font-size: 20px; font-weight: 700;
    color: #fff;
    text-shadow: 0 0 12px rgba(255,255,255,0.6);
    line-height: 1;
}

/* ─────────── HUD BOTTOM ─────────── */
.hud-bottom {
    position: absolute;
    bottom: max(env(safe-area-inset-bottom, 0px), 14px);
    width: 100%;
    display: flex; justify-content: center;
    z-index: 10;
}

.shooter-hud {
    display: flex; gap: 14px; align-items: flex-end;
}

.bubble-preview {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 10px 16px;
    display: flex; flex-direction: column; align-items: center;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glow-primary);
    gap: 4px;
}

#next-bubble-display {
    width: 34px; height: 34px;
    border-radius: 50%;
    box-shadow: inset -3px -3px 8px rgba(0,0,0,0.5), inset 3px 3px 8px rgba(255,255,255,0.5);
    transition: background-color 0.3s;
}

.powerups-container {
    display: flex; gap: 10px;
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 50px;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glow-primary);
}

.powerup-btn {
    width: 46px; height: 46px;
    border-radius: 50%;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 1px solid rgba(99,102,241,0.4);
    box-shadow: 0 4px 12px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.1);
    font-size: 20px; cursor: pointer; position: relative;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex; justify-content: center; align-items: center;
}
.powerup-btn:hover {
    transform: translateY(-3px) scale(1.1);
    border-color: var(--secondary);
    box-shadow: 0 8px 20px rgba(139,92,246,0.5), inset 0 1px 0 rgba(255,255,255,0.2);
}
.powerup-btn:active { transform: scale(0.9); }

.cost {
    position: absolute; bottom: -6px; right: -6px;
    background: var(--warning);
    color: #000;
    font-family: 'Fredoka One', cursive;
    font-size: 10px; font-weight: 900;
    padding: 1px 5px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.7);
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

/* ─────────── PAUSE BTN ─────────── */
#btn-pause {
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text-light);
    font-size: 18px;
    width: 40px; height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex; justify-content: center; align-items: center;
    backdrop-filter: var(--glass-blur);
    transition: transform 0.2s;
    box-shadow: var(--glow-primary);
}
#btn-pause:active { transform: scale(0.88); }

/* ─────────── SCREENS ─────────── */
.ui-screen {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 20;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    animation: screenFadeIn 0.35s ease;
}

@keyframes screenFadeIn {
    from { opacity: 0; transform: scale(0.97); }
    to   { opacity: 1; transform: scale(1); }
}

.overlay-bg {
    background: rgba(2, 5, 18, 0.85);
    backdrop-filter: blur(14px);
}

/* ─────────── MAIN MENU ─────────── */
.logo-container {
    margin-bottom: 50px;
    text-align: center;
    animation: floatLogo 4s ease-in-out infinite;
}

@keyframes floatLogo {
    0%, 100% { transform: translateY(0px) rotate(-1deg); }
    50%       { transform: translateY(-14px) rotate(1deg); }
}

.game-title {
    font-family: 'Fredoka One', cursive;
    font-size: 54px; line-height: 0.95;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(to bottom, #ffffff 0%, #c7d2fe 60%, #818cf8 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 12px rgba(99,102,241,0.5));
}

.highlight {
    display: block;
    background: linear-gradient(to right, #f43f5e, #fb923c, #facc15);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 76px;
    filter: drop-shadow(0 0 18px rgba(244,63,94,0.6));
}

.menu-buttons {
    display: flex; flex-direction: column;
    gap: 18px; width: 82%; max-width: 310px;
}

/* ─────────── BUTTONS ─────────── */
.main-btn {
    padding: 16px 28px;
    font-family: 'Fredoka One', cursive;
    font-size: 20px; color: #fff;
    background: linear-gradient(to bottom, var(--primary), var(--primary-dark));
    border: none; border-radius: 35px; cursor: pointer;
    box-shadow: 0 7px 0 #312e81, 0 12px 24px rgba(0,0,0,0.5);
    transition: all 0.12s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; overflow: hidden;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}
.main-btn::after {
    content: '';
    position: absolute; top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
    transition: left 0.5s;
}
.main-btn:hover::after { left: 100%; }
.main-btn:active {
    transform: translateY(7px);
    box-shadow: 0 0 0 #312e81, 0 4px 10px rgba(0,0,0,0.4);
}

.main-btn.secondary {
    background: linear-gradient(to bottom, var(--success), #059669);
    box-shadow: 0 7px 0 #064e3b, 0 12px 24px rgba(0,0,0,0.5);
}
.main-btn.secondary:active { box-shadow: 0 0 0 #064e3b, 0 4px 10px rgba(0,0,0,0.4); }

.main-btn.danger {
    background: linear-gradient(to bottom, var(--accent), #c81d4e);
    box-shadow: 0 7px 0 #7f1d1d, 0 12px 24px rgba(0,0,0,0.5);
}
.main-btn.danger:active { box-shadow: 0 0 0 #7f1d1d, 0 4px 10px rgba(0,0,0,0.4); }

.nav-btn {
    padding: 12px 26px;
    font-family: 'Fredoka One', cursive;
    font-size: 16px; color: #fff;
    background: linear-gradient(to bottom, #334155, #1e293b);
    border: none; border-radius: 22px; cursor: pointer;
    box-shadow: 0 5px 0 #0f172a, 0 8px 16px rgba(0,0,0,0.4);
    margin-top: 18px;
    transition: all 0.12s;
}
.nav-btn:active {
    transform: translateY(5px);
    box-shadow: 0 0 0 #0f172a, 0 4px 8px rgba(0,0,0,0.3);
}

.icon-btn {
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text-light);
    font-size: 18px;
    width: 46px; height: 46px;
    border-radius: 50%; cursor: pointer;
    display: flex; justify-content: center; align-items: center;
    backdrop-filter: var(--glass-blur);
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--glow-primary);
}
.icon-btn.large { width: 60px; height: 60px; font-size: 28px; }
.icon-btn:active { transform: scale(0.88); }

/* ─────────── PULSE ANIMATION ─────────── */
.pulse {
    animation: pulseBtn 2.2s ease-in-out infinite;
}
@keyframes pulseBtn {
    0%, 100% { transform: scale(1);    box-shadow: 0 7px 0 #312e81, 0 0  0   0 rgba(99,102,241,0.3); }
    50%       { transform: scale(1.03); box-shadow: 0 7px 0 #312e81, 0 0 18px 8px rgba(99,102,241,0); }
}

/* ─────────── MODAL BOX ─────────── */
.modal-box {
    background: linear-gradient(145deg, rgba(15,20,50,0.95), rgba(8,12,30,0.97));
    border: 1px solid rgba(99,102,241,0.25);
    border-radius: 32px;
    padding: 38px 28px;
    width: 88%; max-width: 360px;
    text-align: center;
    box-shadow: var(--glow-primary), 0 24px 60px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.08);
    backdrop-filter: blur(24px);
    animation: modalPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes modalPop {
    from { transform: scale(0.7); opacity: 0; }
    to   { transform: scale(1);   opacity: 1; }
}

.modal-box h2 {
    font-family: 'Fredoka One', cursive;
    font-size: 38px; margin-bottom: 22px;
    background: linear-gradient(to right, #ffd700, #ff8c00);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase; letter-spacing: 1px;
}

.stars-container {
    font-size: 46px; margin: 12px 0 24px;
    display: flex; justify-content: center; gap: 14px;
}
.star {
    opacity: 0.15; transform: scale(0.7);
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.5);
    filter: grayscale(100%);
}
.star.active {
    opacity: 1; transform: scale(1.15);
    filter: grayscale(0%) drop-shadow(0 0 12px #ffd700);
}

.stats-box {
    background: rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 18px;
    padding: 14px 18px; margin-bottom: 26px;
}
.stats-box p {
    font-size: 18px; color: var(--text-muted);
    display: flex; justify-content: space-between;
    padding: 4px 0;
}
.stats-box span {
    font-family: 'Orbitron', monospace;
    color: #fff; font-weight: 700;
}

.modal-buttons { display: flex; flex-direction: column; gap: 14px; }

/* ─────────── SETTINGS ─────────── */
.settings-row {
    display: flex; justify-content: space-between; align-items: center;
    font-family: 'Fredoka One', cursive;
    font-size: 20px; margin-bottom: 22px;
    color: var(--text-light);
}
.switch { position: relative; display: inline-block; width: 54px; height: 28px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute; cursor: pointer;
    inset: 0; background: #334155;
    transition: .4s; border-radius: 34px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.4);
}
.slider:before {
    position: absolute; content: '';
    height: 20px; width: 20px;
    left: 4px; bottom: 4px;
    background: #fff;
    transition: .35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border-radius: 50%;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
input:checked + .slider { background: var(--success); }
input:checked + .slider:before { transform: translateX(26px); }

/* ─────────── COINS ─────────── */
.coins-display {
    position: absolute;
    top: max(env(safe-area-inset-top, 0px), 14px);
    right: 14px;
    background: var(--panel);
    backdrop-filter: var(--glass-blur);
    padding: 7px 16px; border-radius: 30px;
    color: #fcd34d;
    font-family: 'Fredoka One', cursive;
    font-size: 18px;
    border: 1px solid rgba(245,158,11,0.35);
    box-shadow: 0 0 18px rgba(245,158,11,0.2);
    display: flex; align-items: center; gap: 6px;
}

/* ─────────── LEVEL SELECT ─────────── */
#screen-levels h2 {
    font-family: 'Fredoka One', cursive;
    font-size: 30px; margin-bottom: 18px;
    background: linear-gradient(to right, #c7d2fe, #818cf8);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase; letter-spacing: 2px;
}

.scrollable-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px; width: 92%; max-height: 62vh;
    overflow-y: auto;
    padding: 14px 10px; margin-bottom: 18px;
}
.scrollable-grid::-webkit-scrollbar { width: 5px; }
.scrollable-grid::-webkit-scrollbar-track { background: rgba(255,255,255,0.04); border-radius: 8px; }
.scrollable-grid::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 8px; }

.level-btn {
    width: 58px; height: 58px; margin: 0 auto;
    border-radius: 18px;
    background: linear-gradient(145deg, #3b82f6, #1d4ed8);
    color: #fff;
    font-family: 'Fredoka One', cursive;
    font-size: 22px;
    border: none; cursor: pointer;
    box-shadow: 0 6px 0 #1e3a8a, 0 10px 18px rgba(0,0,0,0.4);
    transition: all 0.14s;
    position: relative;
}
.level-btn::after {
    content: ''; position: absolute;
    top: 3px; left: 12%; width: 76%; height: 28%;
    background: linear-gradient(180deg, rgba(255,255,255,0.35), transparent);
    border-radius: 8px;
}
.level-btn:active:not(.locked) {
    transform: translateY(6px);
    box-shadow: 0 0 0 #1e3a8a, 0 4px 8px rgba(0,0,0,0.4);
}
.level-btn.locked {
    background: linear-gradient(145deg, #374151, #1f2937);
    color: #4b5563;
    box-shadow: 0 6px 0 #111827, 0 10px 18px rgba(0,0,0,0.4);
    cursor: not-allowed;
}
.level-btn.locked:active { transform: none; }

/* ─────────── MENU FOOTER ─────────── */
.menu-footer {
    margin-top: 28px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ─────────── TITLE GRADIENT FIX ─────────── */
#end-title {
    font-family: 'Fredoka One', cursive;
    font-size: 36px;
    margin-bottom: 22px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ─────────── BOTTOM SAFE ZONE PADDING ─────────── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .hud-bottom { padding-bottom: env(safe-area-inset-bottom); }
}

/* ─────────── SCREEN LEVELS HEADER ─────────── */
#screen-levels h2 {
    font-family: 'Fredoka One', cursive;
    font-size: 28px; margin-bottom: 16px; letter-spacing: 2px;
    color: #a5b4fc; text-transform: uppercase;
    text-shadow: 0 0 20px rgba(99,102,241,0.6);
}