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

body {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
    min-height: 100vh;
    font-family: 'Roboto', sans-serif;
    color: #fff;
    display: flex;
    flex-direction: column;
}

/* Price Ticker Bar */
.price-ticker {
    background: linear-gradient(90deg, #1a1a2e 0%, #2a2a4e 50%, #1a1a2e 100%);
    padding: 15px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    border-bottom: 2px solid #f7931a;
    flex-wrap: wrap;
}

.price-display {
    display: flex;
    align-items: center;
    gap: 15px;
}

.price-label {
    font-family: 'Orbitron', monospace;
    font-size: 0.9rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.price-value {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    color: #f7931a;
    text-shadow: 0 0 20px rgba(247, 147, 26, 0.5);
}

.price-change {
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.price-change.positive {
    background: rgba(0, 255, 136, 0.2);
    color: #00ff88;
}

.price-change.negative {
    background: rgba(255, 68, 68, 0.2);
    color: #ff4444;
}

.price-change.neutral {
    background: rgba(136, 136, 136, 0.2);
    color: #888;
}

.exchange-badge {
    font-size: 0.75rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.exchange-badge::before {
    content: '●';
    color: #00ff88;
    font-size: 0.5rem;
    animation: blink 20s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.last-updated {
    font-size: 0.7rem;
    /* color: #555; */
    color: #AAA;
}

/* Header Banner */
header {
    background: linear-gradient(90deg, #f7931a 0%, #ffcd00 50%, #f7931a 100%);
    padding: 20px 40px;
    text-align: center;
    box-shadow: 0 4px 30px rgba(247, 147, 26, 0.5);
    position: relative;
    overflow: visible;
    display: flex;
    justify-content: center;
    align-items: center;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    /* animation: shimmer 3s infinite; */
}

@keyframes shimmer {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(50%); }
}

.logo-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.logo {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    color: #000;
    text-shadow: 2px 2px 0 rgba(255,255,255,0.3);
    letter-spacing: 4px;
    position: relative;
    z-index: 1;
}

.logo .btc-icon {
    display: inline-block;
    margin-right: 10px;
    font-size: 2.5rem;
    animation: pulse 2s infinite;
}

/* Navigation Menu */
.nav-menu {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.hamburger {
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 8px;
    padding: 12px 10px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    transition: background 0.3s ease;
}

.hamburger:hover {
    background: rgba(0, 0, 0, 0.85);
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 3px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid rgba(247, 147, 26, 0.3);
    border-radius: 10px;
    min-width: 180px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 14px 20px;
    color: #fff;
    text-decoration: none;
    font-family: 'Roboto', sans-serif;
    font-size: 0.95rem;
    transition: background 0.2s ease, color 0.2s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background: rgba(247, 147, 26, 0.2);
    color: #f7931a;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.tagline {
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    color: #333;
    margin-top: 5px;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
}

/* Main Content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    gap: 40px;
}

.chart-container {
    max-width: 90%;
    width: 100%;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 0 40px rgba(247, 147, 26, 0.2);
    border: 1px solid rgba(247, 147, 26, 0.3);
}

.chart-container img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.chart-title {
    text-align: center;
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    /* margin-bottom: 15px; */
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Different colors for each chart title */
.chart-title.bollinger {
    color: #f7931a;
}

.chart-title.rsi {
    color: #00d4ff;
}

.chart-title.macd {
    color: #ff6b9d;
}

/*
.chart-title .icon {
    margin-right: 5px;
}*/

/* Footer */
footer {
    background: #000;
    padding: 20px;
    text-align: center;
    border-top: 1px solid #333;
}

.copyright {
    color: #666;
    font-size: 0.9rem;
}

.copyright a {
    color: #f7931a;
    text-decoration: none;
}

.copyright a:hover {
    text-decoration: underline;
}

/* 24H Range Indicator */
.range-indicator {
    background: linear-gradient(90deg, #1a1a2e 0%, #2a2a4e 50%, #1a1a2e 100%);
    padding: 15px 20px 18px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.range-labels {
    display: flex;
    gap: 20px;
    align-items: center;
}

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

.range-label-text {
    font-family: 'Roboto', sans-serif;
    font-size: 0.65rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.range-label-value {
    font-family: 'Orbitron', monospace;
    font-size: 1rem;
    font-weight: 700;
}

.range-label.low .range-label-value {
    color: #ff4444;
}

.range-label.high .range-label-value {
    color: #00ff88;
}

.range-bar-container {
    flex: 1;
    max-width: 300px;
    min-width: 150px;
    padding: 0 10px;
}

.range-bar {
    position: relative;
    height: 8px;
    background: linear-gradient(90deg, #ff4444 0%, #888 50%, #00ff88 100%);
    border-radius: 4px;
    box-shadow: 0 0 10px rgba(247, 147, 26, 0.3);
}

.range-bar-fill {
    height: 100%;
    border-radius: 4px;
}

.range-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    transition: left 0.5s ease;
}

.marker-dot {
    width: 18px;
    height: 18px;
    background: #fff;
    border: 3px solid #f7931a;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(247, 147, 26, 0.8), 0 0 20px rgba(247, 147, 26, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }
    .logo .btc-icon {
        font-size: 1.8rem;
    }
    .price-value {
        font-size: 2.5rem;
    }
    .chart-title {
        font-size: 1.2rem;
    }
    header {
        padding: 15px 20px;
    }
    main {
        padding: 20px 10px;
        gap: 20px;
    }
}

@media (max-width: 600px) {
    .price-value {
        font-size: 2rem;
    }
    .price-change {
        font-size: 0.85rem;
        padding: 4px 8px;
    }
    .range-indicator {
        padding: 10px 15px 12px 15px;
        gap: 10px;
    }
    .range-label-value {
        font-size: 0.9rem;
    }
    .range-bar-container {
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .price-display {
        flex-direction: column;
        gap: 8px;
    }
    .price-value {
        font-size: 3rem;
    }
    .range-indicator {
        padding: 8px 10px 10px 10px;
        gap: 8px;
    }
    .range-label-text {
        font-size: 0.55rem;
    }
    .range-label-value {
        font-size: 0.8rem;
    }
    .range-bar-container {
        max-width: 150px;
    }
    .marker-dot {
        width: 14px;
        height: 14px;
    }
}