:root {
    --gold-light: #f9d976;
    --gold-main: #e5b233;
    --gold-dark: #b3821a;
    --bg-dark: #0f1610; /* Dark emerald/forest green tint */
    --text-main: #fff;
    --text-gold: #f9d976;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

[hidden] {
    display: none !important;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Outfit', system-ui, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-y: auto;
    position: relative;
}

.glitter-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse at 20% 10%, rgba(229, 178, 51, 0.18), transparent 55%),
        radial-gradient(ellipse at 90% 90%, rgba(229, 178, 51, 0.12), transparent 60%),
        var(--bg-dark);
}

/* Subtle sparkle animation overlay */
.glitter-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(white, rgba(255,255,255,.2) 2px, transparent 4px),
                      radial-gradient(white, rgba(255,255,255,.15) 1px, transparent 3px),
                      radial-gradient(white, rgba(255,255,255,.1) 2px, transparent 4px);
    background-size: 550px 550px, 350px 350px, 250px 250px;
    background-position: 0 0, 40px 60px, 130px 270px;
    animation: sparkle 15s linear infinite;
    opacity: 0.35;
}

@keyframes sparkle {
    0% { background-position: 0 0, 40px 60px, 130px 270px; }
    100% { background-position: 550px 550px, 390px 410px, 380px 520px; }
}

.app-container {
    width: 100%;
    max-width: 500px;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    padding: 20px 16px;
    background: linear-gradient(135deg, rgba(15, 22, 16, 0.9) 0%, rgba(5, 8, 5, 0.95) 100%);
    box-shadow: 0 0 50px rgba(229, 178, 51, 0.1);
    backdrop-filter: blur(10px);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

h1 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(to right, var(--gold-light), var(--gold-main), var(--gold-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0px 2px 10px rgba(229, 178, 51, 0.4));
}

.captures {
    font-size: 0.95rem;
    color: var(--text-gold);
    letter-spacing: 1px;
    opacity: 0.85;
}

.gold-btn {
    background: linear-gradient(135deg, var(--gold-main), var(--gold-dark));
    border: 1px solid var(--gold-light);
    color: #111;
    padding: 8px 16px;
    border-radius: 20px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(229, 178, 51, 0.3);
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.gold-btn:hover, .gold-btn:active {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 178, 51, 0.5);
    background: linear-gradient(135deg, var(--gold-light), var(--gold-main));
}

.gold-btn:disabled {
    opacity: 0.4;
    cursor: default;
    transform: none;
    box-shadow: none;
}

.board-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 14px;
}

#board {
    display: block;
    max-width: 100%;
    touch-action: manipulation;
    cursor: pointer;
    filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.5));
}

.status {
    min-height: 3.2em;
    text-align: center;
    font-size: 0.95rem;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 14px;
    transition: min-height 0.3s ease;
}

.controls-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    gap: 8px;
}

.controls-row .gold-btn {
    flex: 1;
    padding: 10px 4px;
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    text-align: center;
    white-space: nowrap;
}

.secondary-controls {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.secondary-controls .gold-btn {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.settings {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.setting {
    display: flex;
    align-items: center;
    gap: 12px;
}

.setting-label {
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    width: 5.5em;
    text-align: right;
}

.segmented {
    display: flex;
    gap: 18px;
}

.diff-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.5);
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    cursor: pointer;
    padding-bottom: 5px;
    transition: color 0.3s;
}

.diff-btn.active {
    color: var(--gold-light);
    border-bottom: 2px solid var(--gold-main);
}

/* Confirmation modal */
.confirm-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}

.confirm-modal.hidden {
    display: none;
}

.confirm-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.confirm-content {
    position: relative;
    background: linear-gradient(135deg, #1a261b, #0a100b);
    border: 1px solid var(--gold-main);
    border-radius: 16px;
    padding: 24px;
    width: min(320px, 85vw);
    text-align: center;
    box-shadow: 0 0 40px rgba(229, 178, 51, 0.25);
}

.confirm-content p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-gold);
}

.confirm-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.confirm-buttons .gold-btn {
    min-width: 90px;
}

@media (max-width: 400px) {
    .controls-row {
        gap: 6px;
    }
    .controls-row .gold-btn {
        font-size: 0.72rem;
        padding: 9px 2px;
        letter-spacing: 0;
    }
}

@media (max-width: 360px) {
    h1 { font-size: 2rem; }
    .controls-row {
        gap: 4px;
    }
    .controls-row .gold-btn {
        font-size: 0.65rem;
        padding: 8px 1px;
        letter-spacing: 0;
    }
}