/* ADVANCED UNIT CONVERTER - ENHANCED FEATURES */

/* Advanced preloader styling */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-bg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.7s ease, visibility 0.7s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-color-1), var(--accent-color-2), var(--accent-color-3));
    animation: rotate 1.5s linear infinite;
}

.loader::before {
    content: "";
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border-radius: 50%;
    background: var(--primary-bg);
}

.loader::after {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-color-1);
    box-shadow: 0 0 10px var(--accent-color-1), 0 0 20px var(--accent-color-1);
}

.loader-inner {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent-color-1);
    border-bottom-color: var(--accent-color-2);
    animation: rotate 1s ease-in-out infinite;
}

.loader-text {
    position: relative;
    margin-top: 25px;
    font-size: 16px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-color-1);
    background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2), var(--accent-color-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

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

/* Quick Conversion Buttons */
.quick-conversion-container {
    margin-bottom: 1.5rem;
    padding: 0.8rem 1rem;
    background: var(--tertiary-bg);
    border-radius: 10px;
    border: 1px solid var(--card-border);
}

.quick-conversion-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.quick-conversions-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-conv-btn {
    background: var(--glass-bg);
    border: 1px solid var(--card-border);
    border-radius: 30px;
    padding: 0.5rem 1rem;
    color: var(--text-primary);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast) ease;
}

.quick-conv-btn:hover, .quick-conv-btn.active {
    background: linear-gradient(90deg, var(--accent-color-3), var(--accent-color-1));
    color: var(--primary-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 240, 255, 0.3);
}

/* Voice Input Button */
.input-with-mic {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-mic input {
    padding-right: 40px;
}

.mic-button {
    position: absolute;
    right: 10px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 5px;
    transition: all var(--transition-fast) ease;
}

.mic-button:hover {
    color: var(--accent-color-1);
}

.mic-button.recording {
    color: var(--accent-color-2);
    animation: pulse 1.5s infinite;
}

/* Copy Button */
.copy-button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: color 0.2s ease;
    margin-left: 10px;
    vertical-align: middle;
}

.copy-button:hover {
    color: var(--accent-color-1);
}

.copy-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--accent-color-1);
    color: var(--primary-bg);
    padding: 10px 20px;
    border-radius: 5px;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease;
    z-index: 1000;
    font-size: 0.9rem;
}

.copy-notification.show {
    opacity: 1;
    transform: translateY(0);
}

/* Chart Container */
.advanced-features {
    margin: 2rem 0;
}

.chart-container {
    background: var(--tertiary-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--card-border);
    height: 300px;
    position: relative;
}

.chart-container h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-color-1);
    font-size: 1.1rem;
}

#conversion-chart {
    width: 100%;
    height: 220px;
}

/* Keyboard Shortcuts */
.keyboard-shortcuts {
    margin-top: 1.5rem;
    background: var(--tertiary-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--card-border);
}

.keyboard-shortcuts h3 {
    margin-bottom: 1rem;
    color: var(--accent-color-1);
    font-size: 1.1rem;
}

.keyboard-shortcuts ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.keyboard-shortcuts li {
    background: var(--glass-bg);
    padding: 0.7rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

kbd {
    background: var(--tertiary-bg);
    color: var(--accent-color-1);
    padding: 2px 5px;
    border-radius: 3px;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
    margin: 0 3px;
    font-size: 0.8rem;
    font-family: monospace;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .keyboard-shortcuts ul {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .quick-conversions-buttons {
        justify-content: center;
    }
}

/* Create a subtle blinking effect for the preloader text */
@keyframes dots {
    0%, 20% {
        content: ".";
    }
    40% {
        content: "..";
    }
    60%, 100% {
        content: "...";
    }
}

.loader-text:after {
    content: "";
    animation: dots 1.5s infinite;
}

/* Rotating effect for swap button */
.swap-button.rotating {
    animation: rotate360 0.3s ease-in-out;
}

@keyframes rotate360 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}