:root {
    --bg-color: #0a0b1e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary-color: #00d4ff;
    --secondary-color: #8a2be2;
    --accent-color: #ff00cc;
    --text-main: #ffffff;
    --text-dim: #b0b0d1;
    --font-family: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-family);
    min-height: 100vh;
    overflow-x: hidden;
    background: radial-gradient(circle at 50% 50%, #1a1b3a 0%, #0a0b1e 100%);
}

/* Glass Navigation */
.glass-nav {
    position: sticky;
    top: 0;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10%;
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dim);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.nav-links li.separator {
    color: var(--glass-border);
    font-weight: 300;
    pointer-events: none;
}

main {
    padding: 2rem 10%;
}

.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, var(--text-dim));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section p {
    font-size: 1.1rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

.complexity-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(138, 43, 226, 0.2);
    border: 1px solid var(--secondary-color);
    border-radius: 50px;
    font-weight: 600;
}

.highlight {
    color: var(--primary-color);
}

/* Simulation Canvas */
.simulation-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    margin-bottom: 3rem;
}

.canvas-wrapper {
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    padding: 3rem;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.canvas {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    width: 100%;
    justify-content: center;
}

.array-element {
    width: 40px;
    background: linear-gradient(to top, var(--secondary-color), var(--primary-color));
    border-radius: 8px 8px 4px 4px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 10px;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.element-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.element-index {
    position: absolute;
    bottom: -30px;
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* Element States */
.array-element.comparing {
    transform: translateY(-20px);
    box-shadow: 0 15px 25px rgba(0, 212, 255, 0.4);
    filter: brightness(1.3);
}

.array-element.found {
    background: linear-gradient(to top, #00ff88, #60efff);
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

.array-element.discarded {
    opacity: 0.2;
    filter: grayscale(1);
}

.array-element.current-block {
    border: 2px solid var(--accent-color);
}

/* Controls */
.glass-controls {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

input[type="number"] {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.8rem;
    color: #fff;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

input[type="number"]:focus {
    border-color: var(--primary-color);
}

input[type="range"] {
    accent-color: var(--primary-color);
    cursor: pointer;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1rem;
}

button {
    padding: 1rem;
    border-radius: 14px;
    border: none;
    font-family: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
}

button.primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

button.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

button.outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-dim);
}

button.outline:hover {
    border-color: var(--text-dim);
    color: #fff;
}

/* Info Cards */
.info-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.info-card {
    padding: 2rem;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    background: var(--card-bg);
}

.info-card h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.info-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-card li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dim);
}

.info-card li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

footer {
    padding: 3rem 10%;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Formula Styling */
.formula-container {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.1rem;
    overflow-x: auto;
}

.formula-label {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Status Overlay */
.status-overlay {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 15px;
    z-index: 10;
    pointer-events: none;
    animation: fadeIn 0.5s ease-out;
    width: 90%;
    justify-content: center;
}

.status-badge {
    background: var(--secondary-color);
    color: #fff;
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.4);
}

#status-text {
    background: rgba(10, 11, 30, 0.8);
    backdrop-filter: blur(12px);
    padding: 8px 25px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    font-weight: 500;
    color: var(--primary-color);
    font-size: 1rem;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    flex-grow: 0;
}

.canvas-wrapper>* {
    animation: fadeIn 0.8s ease-out;
}

/* Responsive */
@media (max-width: 1024px) {
    .simulation-container {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }
}