/*
 * Shader Forge - Layout
 * Main grid, panels, containers
 */

.app-container {
    display: grid;
    grid-template-rows: auto 1fr;
    height: 100vh;
    background: var(--bg-void);
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-deep);
    border-bottom: 1px solid var(--border-subtle);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    font-style: italic;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--accent-primary);
}

.logo-tag {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Navigation */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--accent-primary);
}

.nav-link.highlight {
    color: var(--accent-primary);
    padding: 4px 10px;
    border: 1px solid var(--accent-primary);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav-link.highlight:hover {
    background: rgba(167, 139, 250, 0.15);
    color: var(--text-primary);
}

.nav-link.highlight.x-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-link.highlight.x-link svg {
    flex-shrink: 0;
}

/* Download Button - Prominent CTA */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.2);
}

.download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.download-btn:active {
    transform: translateY(0);
}

.download-btn svg {
    flex-shrink: 0;
}

.nav-divider {
    width: 1px;
    height: 16px;
    background: var(--border-subtle);
    margin: 0 var(--space-sm);
}

.nav-link-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-link-icon:hover {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

/* Main Content - Two Column */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border-subtle);
    overflow: hidden;
}

/* Panels */
.editor-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-deep);
    overflow: hidden;
}

.canvas-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-void);
    position: relative;
}

/* Panel Headers */
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
}

.panel-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.panel-hint {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-ghost);
    font-style: italic;
}

.panel-header-left,
.panel-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Inspiration Link */
.inspiration-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 4px;
    color: #f87171;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.inspiration-link:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.5);
}

.inspiration-link svg {
    flex-shrink: 0;
}

/* Action Buttons (Reset, Copy) */
.reset-btn,
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.reset-btn:hover,
.copy-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.copy-btn.copied {
    background: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.4);
    color: #22c55e;
}

.reset-btn svg,
.copy-btn svg {
    flex-shrink: 0;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }

    .editor-panel {
        order: 2;
    }

    .canvas-panel {
        order: 1;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .app-container {
        height: auto;
        min-height: 100vh;
        overflow: auto;
    }

    /* Header - compact mobile layout */
    .app-header {
        flex-direction: column;
        gap: var(--space-sm);
        padding: var(--space-sm) var(--space-md);
    }

    .logo {
        width: 100%;
        justify-content: center;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .logo-tag {
        font-size: 0.55rem;
    }

    /* Navigation - wrap and center */
    .nav-links {
        width: 100%;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-xs);
    }

    .nav-link {
        font-size: 0.65rem;
        padding: 4px 8px;
    }

    .nav-link.highlight {
        font-size: 0.6rem;
        padding: 3px 8px;
    }

    .nav-link.highlight {
        font-size: 0.55rem;
        padding: 2px 6px;
    }

    .nav-link.highlight.x-link {
        padding: 2px 4px;
    }

    .nav-link.highlight.x-link span {
        display: none;
    }

    .nav-link.highlight.x-link svg {
        width: 12px;
        height: 12px;
    }

    .nav-divider {
        display: none;
    }

    /* Download button - compact on mobile */
    .download-btn {
        position: absolute;
        top: var(--space-xs);
        right: var(--space-sm);
        padding: 4px 8px;
        font-size: 0.55rem;
        gap: 4px;
        border-radius: 6px;
        animation: none;
    }

    .download-btn svg {
        width: 12px;
        height: 12px;
    }

    .download-btn span {
        display: none;
    }

    .app-header {
        position: relative;
    }

    /* Main content - vertical stack */
    .main-content {
        grid-template-rows: auto auto;
        min-height: calc(100vh - 100px);
        overflow: visible;
    }

    /* Panel headers - compact */
    .panel-header {
        padding: var(--space-xs) var(--space-sm);
        flex-wrap: wrap;
        gap: var(--space-xs);
    }

    .panel-header-left,
    .panel-header-right {
        gap: var(--space-xs);
    }

    .panel-title {
        font-size: 0.6rem;
    }

    .panel-hint {
        display: none;
    }

    /* Action buttons - smaller on mobile */
    .reset-btn,
    .copy-btn {
        padding: 3px 6px;
        font-size: 0.55rem;
    }

    .reset-btn svg,
    .copy-btn svg {
        width: 12px;
        height: 12px;
    }

    .inspiration-link {
        padding: 2px 6px;
        font-size: 0.55rem;
    }

    .inspiration-link svg {
        width: 12px;
        height: 12px;
    }

    /* Canvas panel - fixed height on mobile */
    .canvas-panel {
        min-height: 50vh;
        max-height: 60vh;
    }

    /* Editor panel - scrollable */
    .editor-panel {
        min-height: 40vh;
        max-height: none;
        overflow: visible;
    }
}

/* Responsive - Small phones */
@media (max-width: 480px) {
    .app-header {
        padding: var(--space-xs) var(--space-sm);
    }

    .logo-text {
        font-size: 1.1rem;
    }

    .nav-links {
        gap: 3px;
    }

    .nav-link {
        font-size: 0.55rem;
        padding: 2px 5px;
    }

    .nav-link.highlight {
        font-size: 0.5rem;
        padding: 2px 5px;
    }

    .nav-link.highlight.x-link {
        padding: 2px 3px;
    }

    .nav-link.highlight.x-link svg {
        width: 10px;
        height: 10px;
    }
}