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

:root {
    --water-blue: #00d2ff;
    --vault-gold: #ffb000;
    --caps-green: #00ff41;
    --dark-bg: #0d1a26;
    --panel-bg: rgba(0, 20, 40, 0.8);
    --font-ui: 'Roboto Mono', monospace;
    --font-heading: 'Orbitron', sans-serif;
}

body {
    background: var(--dark-bg);
    color: #fff;
    font-family: var(--font-ui);
    overflow-x: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Water Background Effect */
.water-bg {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, #0d1a26 0%, #001a1a 100%);
    z-index: -2;
}
.water-bg::after {
    content: '';
    position: absolute;
    width: 200%; height: 200%;
    top: -50%; left: -50%;
    background-image: radial-gradient(circle at center, rgba(0,210,255,0.05) 0%, transparent 60%);
    animation: rotateBg 20s linear infinite;
    z-index: -1;
}
@keyframes rotateBg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.faucet-container {
    width: 100%;
    max-width: 1000px;
    padding: 20px;
    position: relative;
    z-index: 10;
}

/* Nav */
.faucet-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    align-items: center;
}
@media (max-width: 600px) {
    .faucet-nav { flex-direction: column; gap: 20px; text-align: center; }
}

.nav-btn {
    color: var(--water-blue);
    text-decoration: none;
    font-weight: bold;
    border: 1px solid var(--water-blue);
    padding: 10px 15px;
    border-radius: 4px;
}
.nav-btn:hover { background: var(--water-blue); color: #000; }

.wallet-connect {
    display: flex;
    gap: 10px;
}
.wallet-connect input {
    background: transparent;
    border: 1px solid var(--water-blue);
    color: var(--water-blue);
    padding: 10px;
    font-family: inherit;
    width: 300px;
}
.wallet-connect button {
    background: var(--water-blue);
    color: #000;
    font-weight: bold;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-family: inherit;
}

/* Header */
.faucet-header {
    text-align: center;
    margin-bottom: 50px;
}
.purity-logo {
    font-size: 4rem;
    margin-bottom: 10px;
    animation: drop 2s infinite ease-in-out;
}
@keyframes drop {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--water-blue);
    text-shadow: 0 0 10px var(--water-blue);
    letter-spacing: 4px;
}
h2 {
    color: rgba(255,255,255,0.7);
    margin-bottom: 10px;
    font-size: 1.2rem;
}
.faucet-header p {
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

/* App State */
.hidden { display: none !important; }
.login-prompt {
    text-align: center;
    padding: 40px;
    border: 1px dashed var(--water-blue);
    color: var(--water-blue);
}

.app-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
}
@media (max-width: 800px) {
    .app-grid { grid-template-columns: 1fr; }
}

.panel {
    background: var(--panel-bg);
    border: 1px solid #1a334d;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}
.panel h3 {
    font-family: var(--font-heading);
    color: var(--water-blue);
    border-bottom: 1px solid #1a334d;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

/* Stats */
.reserve-box {
    margin-bottom: 20px;
}
.r-label {
    display: block;
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 5px;
}
.r-val {
    font-size: 2rem;
    font-weight: bold;
    font-family: var(--font-heading);
}
.text-blue { color: var(--water-blue); text-shadow: 0 0 5px var(--water-blue); }
.text-green { color: var(--caps-green); font-size: 1.2rem; }

.exchange-zone {
    margin-top: 40px;
    border-top: 1px dashed #1a334d;
    padding-top: 20px;
}
.btn-exchange {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 2px solid var(--vault-gold);
    color: var(--vault-gold);
    font-family: var(--font-heading);
    font-size: 1rem;
    cursor: not-allowed;
    opacity: 0.5;
    transition: all 0.3s;
}
.btn-exchange.active {
    background: var(--vault-gold);
    color: #000;
    cursor: pointer;
    opacity: 1;
    box-shadow: 0 0 10px var(--vault-gold);
}
.exchange-msg {
    margin-top: 10px;
    font-size: 0.8rem;
    text-align: center;
    color: var(--caps-green);
}

/* Test Area */
.test-desc {
    color: #aaa;
    margin-bottom: 30px;
    line-height: 1.5;
}

.question {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #fff;
    min-height: 60px;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.opt-btn {
    background: rgba(0, 210, 255, 0.1);
    border: 1px solid rgba(0, 210, 255, 0.3);
    color: #fff;
    padding: 15px 20px;
    text-align: left;
    font-family: var(--font-ui);
    font-size: 1rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}
.opt-btn:hover {
    background: rgba(0, 210, 255, 0.3);
    padding-left: 25px;
}
.opt-btn.correct { background: var(--caps-green); color: #000; border-color: var(--caps-green); }
.opt-btn.wrong { background: #ff0000; color: #fff; border-color: #ff0000; }

/* Cooldown */
.cooldown-zone {
    text-align: center;
    padding: 40px 0;
}
.timer {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--water-blue);
    margin-top: 20px;
}
.water-drop-anim { font-size: 3rem; margin-bottom: 20px; }