/* ===================================
   DOORBELL PROJECT PAGE
   =================================== */

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
}

/* Header */
.project-header {
    padding: 5rem 2rem 3rem;
    max-width: 1100px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    transition: color 0.2s ease;
}

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

.header-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.project-tag {
    display: inline-block;
    background: var(--color-bg-tertiary);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.project-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.project-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Header images */
.header-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.header-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 1rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.main-img {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
}

/* Main content */
.project-main {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

.section {
    margin-bottom: 3.5rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-primary);
}

.section-title i {
    color: var(--color-primary);
}

/* Parts list */
.parts-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.parts-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1.25rem;
    background: var(--color-bg-secondary);
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    font-size: 1rem;
}

.parts-list li i {
    color: var(--color-primary);
    width: 1.2rem;
    text-align: center;
    flex-shrink: 0;
}

/* Steps list */
.steps-list {
    list-style: none;
    padding: 0;
    counter-reset: steps;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.steps-list > li {
    counter-increment: steps;
    padding-left: 3.5rem;
    position: relative;
}

.steps-list > li::before {
    content: counter(steps);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.25rem;
    height: 2.25rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary, #764ba2));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
}

.steps-list > li h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    margin-top: 0.25rem;
}

.steps-list > li p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

.steps-list > li a {
    color: var(--color-primary);
    text-decoration: none;
}

.steps-list > li a:hover {
    text-decoration: underline;
}

/* Code blocks */
.code-block {
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--color-border);
    margin: 1rem 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem;
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.code-lang {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.copy-btn {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.3rem 0.75rem;
    border-radius: 0.4rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.copy-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

pre {
    margin: 0;
    padding: 1.25rem;
    background: var(--color-bg-secondary);
    overflow-x: auto;
}

code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--color-text-primary);
}

/* Inline code */
p code, li code {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 0.1em 0.4em;
    border-radius: 0.3rem;
    font-size: 0.875em;
}

/* Install hint */
.install-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.install-hint i {
    color: var(--color-primary);
}

.install-hint code {
    background: none;
    border: none;
    padding: 0;
}

/* Footer */
.project-footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.project-footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.project-footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        grid-template-columns: 1fr;
    }

    .header-images {
        grid-template-columns: 1fr;
    }

    .main-img {
        grid-column: span 1;
    }

    .steps-list > li {
        padding-left: 3rem;
    }
}