/* ==================== Global Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ==================== Loading Screen ==================== */
#loading-screen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%,
            rgba(60,20,0,0.95) 0%,
            #0a0500 70%,
            #000 100%);
    font-family: 'Noto Sans SC', sans-serif;
    user-select: none;
}

/* ─── Cracked background texture ───────────────────────── */
.load-bg-crack {
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(
            120deg,
            transparent,
            transparent 60px,
            rgba(139,69,19,0.08) 60px,
            rgba(139,69,19,0.08) 62px
        ),
        repeating-linear-gradient(
            60deg,
            transparent,
            transparent 80px,
            rgba(139,69,19,0.06) 80px,
            rgba(139,69,19,0.06) 82px
        );
    pointer-events: none;
}

/* Deep glow vignette */
#loading-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 50% 50% at 50% 50%,
        transparent 40%,
        rgba(0,0,0,0.7) 100%
    );
    pointer-events: none;
}

/* ─── Title block ──────────────────────────────────────── */
.load-title-block {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 1;
}

.load-eyebrow {
    font-size: 16px;
    color: rgba(255, 200, 80, 0.7);
    letter-spacing: 8px;
    text-transform: uppercase;
    margin-bottom: 18px;
    animation: eyebrowPulse 3s ease-in-out infinite;
}

@keyframes eyebrowPulse {
    0%, 100% { opacity: 0.5; }
    50%       { opacity: 1; }
}

.load-main-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    line-height: 1;
    margin-bottom: 16px;
}

/* Each word swoops in from different directions */
.load-word-plants {
    font-size: clamp(52px, 9vw, 110px);
    font-weight: 900;
    color: #7CFC00;
    text-shadow:
        0 0 30px rgba(124,252,0,0.6),
        0 0 60px rgba(124,252,0,0.3),
        4px 6px 0 #1a4d00,
        8px 12px 20px rgba(0,0,0,0.8);
    animation: swoopLeft 0.9s cubic-bezier(0.22,1,0.36,1) both;
    letter-spacing: -2px;
}

.load-word-vs {
    font-size: clamp(38px, 6vw, 75px);
    font-weight: 900;
    color: #FFD700;
    text-shadow:
        0 0 20px rgba(255,215,0,0.8),
        3px 4px 0 #7a5200,
        6px 8px 15px rgba(0,0,0,0.8);
    animation: swoopDown 0.8s 0.2s cubic-bezier(0.22,1,0.36,1) both;
}

.load-word-zombies {
    font-size: clamp(52px, 9vw, 110px);
    font-weight: 900;
    color: #8B0000;
    text-shadow:
        0 0 30px rgba(180,0,0,0.7),
        0 0 60px rgba(255,0,0,0.25),
        -4px 6px 0 #3a0000,
        -8px 12px 20px rgba(0,0,0,0.8);
    animation: swoopRight 0.9s 0.1s cubic-bezier(0.22,1,0.36,1) both;
    letter-spacing: -2px;
}

@keyframes swoopLeft {
    from { opacity:0; transform: translateX(-120px) rotate(-8deg) scale(0.7); }
    to   { opacity:1; transform: translateX(0) rotate(0deg) scale(1); }
}
@keyframes swoopRight {
    from { opacity:0; transform: translateX(120px) rotate(8deg) scale(0.7); }
    to   { opacity:1; transform: translateX(0) rotate(0deg) scale(1); }
}
@keyframes swoopDown {
    from { opacity:0; transform: translateY(-60px) scale(0.5); }
    to   { opacity:1; transform: translateY(0) scale(1); }
}

.load-subtitle {
    font-size: clamp(18px, 3vw, 28px);
    font-weight: 700;
    color: rgba(255,200,80,0.9);
    letter-spacing: 12px;
    text-shadow:
        0 0 12px rgba(255,200,80,0.5),
        2px 2px 4px rgba(0,0,0,0.8);
    animation: fadeSlideUp 1s 0.5s both;
}

@keyframes fadeSlideUp {
    from { opacity:0; transform: translateY(20px); }
    to   { opacity:1; transform: translateY(0);    }
}

/* ─── Progress bar section ─────────────────────────────── */
.load-bar-section {
    width: 70vw;
    max-width: 800px;
    position: relative;
    z-index: 1;
    animation: fadeSlideUp 1s 0.7s both;
}

.load-bar-track {
    position: relative;
    width: 100%;
    height: 42px;
    border-radius: 21px;
    background: rgba(255,255,255,0.07);
    border: 2px solid rgba(255,200,80,0.25);
    box-shadow:
        0 0 24px rgba(0,0,0,0.8),
        inset 0 2px 6px rgba(0,0,0,0.6),
        0 0 0 1px rgba(0,0,0,0.4);
    overflow: visible; /* let zombie peek outside */
    margin-bottom: 18px;
}

.load-bar-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0%;
    border-radius: 21px;
    background: linear-gradient(
        90deg,
        #8B0000 0%,
        #CC2200 40%,
        #FF4500 70%,
        #FF8C00 100%
    );
    box-shadow:
        0 0 20px rgba(255,100,0,0.5),
        0 0 40px rgba(200,30,0,0.3),
        inset 0 2px 4px rgba(255,200,100,0.2);
    transition: width 0.1s linear;
}

/* Pulse shimmer over fill */
.load-bar-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,255,255,0.12) 50%,
        transparent 100%
    );
    animation: shimmer 1.8s linear infinite;
    background-size: 200% 100%;
}
@keyframes shimmer {
    from { background-position: -200% 0; }
    to   { background-position:  200% 0; }
}

/* ─── Zombie puller ────────────────────────────────────── */
.load-zombie-puller {
    position: absolute;
    top: 50%;
    font-size: 52px;
    line-height: 1;
    transform-origin: center bottom;
    /* Initial left set by JS */
    left: -20px;
    margin-top: -50px;
    filter:
        drop-shadow(0 0 8px rgba(255,80,0,0.8))
        drop-shadow(0 4px 12px rgba(0,0,0,0.9));
    z-index: 10;
    transition: none;
}

/* ─── Label ─────────────────────────────────────────────── */
.load-bar-label {
    text-align: center;
    color: rgba(255,200,80,0.85);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    text-shadow: 0 0 8px rgba(255,150,0,0.5);
}



body {
    background: #1a1a2e;
    font-family: 'Noto Sans SC', sans-serif;
    overflow: hidden;
    user-select: none;
}

/* ==================== Game Container ==================== */
#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: #1a1a2e;
}

#gameCanvas {
    display: block;
    /* Size & position are controlled programmatically by scaleCanvas() in game.js */
    image-rendering: pixelated;
}

/* ==================== Overlays ==================== */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.menu-content {
    text-align: center;
    padding: 40px 60px;
    border-radius: 20px;
    background: linear-gradient(145deg, rgba(34, 139, 34, 0.9), rgba(20, 80, 20, 0.95));
    border: 3px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.menu-content.gameover {
    background: linear-gradient(145deg, rgba(139, 34, 34, 0.9), rgba(80, 20, 20, 0.95));
}

.menu-content.victory {
    background: linear-gradient(145deg, rgba(218, 165, 32, 0.9), rgba(184, 134, 11, 0.95));
}

/* ==================== Title ==================== */
.game-title {
    font-size: 42px;
    font-weight: 900;
    margin-bottom: 10px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    line-height: 1.4;
}

.title-plant {
    color: #7CFC00;
    display: block;
}

.title-vs {
    color: #FFD700;
    font-size: 32px;
    display: block;
}

.title-zombie {
    color: #CD853F;
    display: block;
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    margin-bottom: 30px;
    letter-spacing: 4px;
}

.gameover-title, .victory-title {
    font-size: 48px;
    color: #fff;
    margin-bottom: 15px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
}

.gameover-text, .victory-text {
    color: rgba(255, 255, 255, 0.85);
    font-size: 18px;
    margin-bottom: 30px;
}

/* ==================== Buttons ==================== */
.menu-btn {
    padding: 14px 50px;
    font-size: 22px;
    font-weight: 700;
    font-family: 'Noto Sans SC', sans-serif;
    color: #fff;
    background: linear-gradient(180deg, #4CAF50, #2E7D32);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.menu-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
    background: linear-gradient(180deg, #66BB6A, #388E3C);
}

.menu-btn:active {
    transform: translateY(0) scale(0.98);
}

.pulse-btn {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); }
    50% { box-shadow: 0 4px 30px rgba(76, 175, 80, 0.6); }
}

.instructions {
    margin-top: 25px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    line-height: 2;
}

/* ==================== Seed Bar ==================== */
#seed-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    background: linear-gradient(180deg, rgba(60, 40, 20, 0.95), rgba(40, 25, 10, 0.9));
    border-bottom: 3px solid rgba(139, 90, 43, 0.6);
    z-index: 50;
    gap: 5px;
}

#sun-counter {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 25px;
    padding: 6px 16px;
    margin-right: 10px;
    border: 2px solid rgba(255, 215, 0, 0.3);
    min-width: 100px;
    justify-content: center;
}

.sun-icon {
    font-size: 24px;
    margin-right: 6px;
    filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.5));
}

#sun-amount {
    color: #FFD700;
    font-size: 22px;
    font-weight: 900;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

#seed-packets {
    display: flex;
    gap: 4px;
    flex: 1;
}

.seed-packet {
    width: 60px;
    height: 55px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.15);
    overflow: hidden;
}

.seed-packet:hover:not(.disabled):not(.cooling) {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.4);
}

.seed-packet.selected {
    border-color: #FFD700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
    transform: translateY(-4px);
}

.seed-packet.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.seed-packet.cooling {
    cursor: not-allowed;
}

.seed-packet .cooldown-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    transition: height 0.1s linear;
    pointer-events: none;
}

.seed-packet .seed-emoji {
    font-size: 22px;
    line-height: 1;
}

.seed-packet .seed-cost {
    font-size: 11px;
    color: #FFD700;
    font-weight: 700;
    margin-top: 2px;
}

#shovel-btn {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: linear-gradient(145deg, #8B4513, #654321);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.15);
    transition: all 0.2s ease;
    margin-left: auto;
}

#shovel-btn:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.4);
}

#shovel-btn.active {
    border-color: #FF4444;
    box-shadow: 0 0 15px rgba(255, 68, 68, 0.5);
}

/* ==================== Wave Info ==================== */
#wave-info {
    position: absolute;
    bottom: 8px;
    right: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 50;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 14px;
    border-radius: 20px;
}

#wave-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

#wave-progress-bar {
    width: 100px;
    height: 8px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    overflow: hidden;
}

#wave-progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #4CAF50, #8BC34A);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* ==================== Wave Banner ==================== */
.wave-banner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 80;
    font-size: 36px;
    font-weight: 900;
    color: #FF4444;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7), 0 0 30px rgba(255, 0, 0, 0.3);
    animation: waveBanner 2s ease forwards;
    pointer-events: none;
    white-space: nowrap;
}

@keyframes waveBanner {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
    20% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
    30% { transform: translate(-50%, -50%) scale(1); }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

/* ==================== Responsive ==================== */
@media (max-width: 1040px) {
    #seed-bar {
        font-size: 14px;
    }
}