/* Navigation Component */
.nav {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-4);
    flex-wrap: wrap;
}

.nav-item {
    background: var(--concrete-light);
    border: var(--border-medium) solid var(--concrete-black);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-snap);
    position: relative;
    color: var(--concrete-black);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -6px;
    right: -6px;
    width: 100%;
    height: 100%;
    border: var(--border-medium) solid var(--concrete-black);
    background: var(--concrete-mid);
    z-index: -1;
    transition: all var(--transition-snap);
}

.nav-item:hover {
    background: var(--accent-primary);
    color: var(--void-black);
    transform: translate(-2px, -2px);
}

.nav-item:hover::after {
    transform: translate(4px, 4px);
}

.nav-item:active {
    transform: translate(2px, 2px);
}

.nav-item:active::after {
    transform: translate(-2px, -2px);
}

.nav-item.active {
    background: var(--concrete-black);
    color: var(--pure-white);
}

/* Terminal Component */
.terminal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-terminal);
    padding: var(--space-4);
    backdrop-filter: blur(4px);
}

.terminal-overlay.active {
    display: flex;
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.terminal {
    background: var(--void-black);
    border: var(--border-thick) solid var(--accent-primary);
    width: 100%;
    max-width: 800px;
    max-height: 600px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px var(--accent-primary);
    animation: terminalSlideIn 0.3s ease-out;
}

@keyframes terminalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.terminal-header {
    background: var(--accent-primary);
    color: var(--void-black);
    padding: var(--space-2) var(--space-3);
    font-weight: var(--font-weight-bold);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--border-medium) solid var(--concrete-black);
}

.terminal-close {
    background: transparent;
    border: var(--border-thin) solid var(--void-black);
    color: var(--void-black);
    font-size: var(--font-size-xl);
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-weight: var(--font-weight-bold);
    transition: all var(--transition-snap);
    line-height: 1;
}

.terminal-close:hover {
    background: var(--void-black);
    color: var(--accent-primary);
}

.terminal-output {
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--space-3);
    color: var(--success);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-loose);
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--void-black);
}

.terminal-output::-webkit-scrollbar {
    width: 8px;
}

.terminal-output::-webkit-scrollbar-track {
    background: var(--void-black);
}

.terminal-output::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border: 1px solid var(--void-black);
}

.terminal-line {
    margin-bottom: var(--space-1);
}

.terminal-prompt {
    color: var(--accent-primary);
    font-weight: var(--font-weight-bold);
    margin-right: var(--space-1);
}

.terminal-error {
    color: var(--error);
}

.terminal-input-wrapper {
    display: flex;
    align-items: center;
    padding: var(--space-3);
    border-top: var(--border-thin) solid var(--accent-primary);
    background: rgba(255, 102, 0, 0.1);
}

.terminal-input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--success);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    outline: none;
    margin-left: var(--space-1);
}

.terminal-input::selection {
    background: var(--accent-primary);
    color: var(--void-black);
}

/* Cursor effect for terminal */
.terminal-cursor {
    display: inline-block;
    width: 8px;
    height: 1em;
    background: var(--success);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}

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

/* Action Links */
.action-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    border-bottom: var(--border-thin) solid var(--accent-primary);
    padding-bottom: 2px;
    transition: all var(--transition-quick);
    display: inline-block;
}

.action-link:hover {
    color: var(--concrete-black);
    background: var(--accent-primary);
    padding: 2px var(--space-1);
    margin-left: -var(--space-1);
}

/* Tooltip component (self-aware cursor tracker) */
.cursor-tooltip {
    position: fixed;
    background: var(--accent-primary);
    color: var(--void-black);
    padding: var(--space-1) var(--space-2);
    border: var(--border-thin) solid var(--concrete-black);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    pointer-events: none;
    z-index: var(--z-overlay);
    white-space: nowrap;
    transform: translate(-50%, -120%);
    opacity: 0;
    transition: opacity var(--transition-quick);
}

.cursor-tooltip.visible {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .title-main {
        font-size: var(--font-size-2xl);
    }

    .title-sub {
        font-size: var(--font-size-base);
    }

    .nav {
        flex-direction: column;
    }

    .nav-item {
        width: 100%;
        text-align: center;
    }

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

    .concrete-block::after {
        bottom: -8px;
        right: -8px;
    }

    .terminal {
        max-height: 80vh;
    }

    .ascii-art {
        font-size: var(--font-size-xs);
    }

    .structure {
        padding: var(--space-2);
    }

    .section {
        padding: var(--space-4) 0;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: var(--font-size-xl);
    }

    .rivet {
        width: 12px;
        height: 12px;
    }

    .beam {
        padding: var(--space-2);
    }

    .concrete-block {
        padding: var(--space-2);
    }

    .log-entry {
        flex-direction: column;
        gap: var(--space-1);
    }
}

/* Print styles */
@media print {
    .rivet,
    .nav,
    .terminal-overlay,
    .footer-link {
        display: none !important;
    }

    .beam,
    .concrete-block {
        box-shadow: none;
        page-break-inside: avoid;
    }

    .section {
        display: block !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --concrete-light: #ffffff;
        --concrete-black: #000000;
        --accent-primary: #ff0000;
    }

    .concrete-block {
        border-width: var(--border-chunky);
    }

    .beam {
        border-width: var(--border-chunky);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}