/* ===================================
   Architecture Theme - Light & Bright
   =================================== */

.architecture-theme {
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F8F8;
    --color-bg-alt: #F0F0F0;
    --color-text-primary: #2C2C2C;
    --color-text-secondary: #606060;
    --color-border: #E5E5E5;
    --color-accent: #B8936D; /* Subtle bronze/gold for architecture */
    --color-accent-light: #D4C5B9;
    
    /* Unified Typography - PT Sans */
    --font-heading: 'PT Sans', system-ui, sans-serif;
    --font-body: 'PT Sans', system-ui, sans-serif;
}

.architecture-theme .nav {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.architecture-theme .nav-cta {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.architecture-theme .nav-cta:hover {
    background-color: #A07D5C;
}

/* Typography Overrides */
.architecture-theme body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

.architecture-theme h1,
.architecture-theme h2,
.architecture-theme h3,
.architecture-theme h4,
.architecture-theme h5,
.architecture-theme h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    letter-spacing: -0.02em;
}

.architecture-theme h1 {
    font-size: 3.5rem;
    font-weight: 500;
    line-height: 1.1;
}

.architecture-theme h2 {
    font-size: 2.5rem;
    font-weight: 500;
    line-height: 1.2;
}

.architecture-theme h3 {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.3;
}

.architecture-theme p {
    font-size: 1.0625rem;
    line-height: 1.7;
    font-weight: 400;
}

/* UI elements keep clean sans-serif */
.architecture-theme .nav,
.architecture-theme .btn,
.architecture-theme .filter-btn,
.architecture-theme .footer,
.architecture-theme .nav-link,
.architecture-theme .project-meta {
    font-family: var(--font-ui);
    letter-spacing: 0;
}

/* Page Hero */
.page-hero {
    padding: 8rem 0 5rem;
    background: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
    text-align: center;
}

.page-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--color-text-primary);
}

.page-hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Sections */
.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--color-bg-secondary);
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--color-text-primary);
}

.section-description {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

/* Approach Grid */
.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.approach-card {
    padding: 2rem;
    background: var(--color-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.approach-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.approach-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.approach-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Portfolio Filters */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--color-border);
    border-radius: 2rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

/* Mobile Menu - Light Background with Transparency */
@media (max-width: 768px) {
    .architecture-theme .nav-menu {
        background-color: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
    }
    
    .architecture-theme .nav-link {
        color: var(--color-text-primary);
    }
    
    .architecture-theme .nav-link:hover {
        background-color: var(--color-bg-alt);
        color: var(--color-accent);
    }
    
    .architecture-theme .nav-menu.active {
        background-color: rgba(255, 255, 255, 0.9) !important;
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
    }
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 3rem 2.5rem;
}

.project-card {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.project-card:hover {
    transform: translateY(-6px);
}

.project-image {
    width: 100%;
    height: 380px;
    overflow: hidden;
    background: linear-gradient(135deg, #F5F5F5 0%, #E8E8E8 100%);
    position: relative;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-image {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
}

.project-card:hover .project-image img {
    transform: scale(1.03);
}

/* Fallback for broken images */
.project-image img::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #F0F0F0 0%, #E0E0E0 100%);
}

.project-image img::after {
    content: 'Image Placeholder';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F0F0F0 0%, #E0E0E0 100%);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Project Title - Clean and elegant below image */
.project-title {
    font-size: 1.375rem;
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
    margin: 1.25rem 0 0;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
    text-align: center;
}

.project-card:hover .project-title {
    color: var(--color-accent);
}

.project-info {
    padding: 1.5rem;
}

.project-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
    line-height: 1.3;
}

.project-excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.project-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Workflow Timeline */
.workflow-timeline {
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
}

.workflow-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.workflow-step {
    position: relative;
    padding-left: 80px;
    margin-bottom: 3rem;
}

.workflow-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 1;
}

.workflow-step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.workflow-step p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.workflow-duration {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
}

/* CTA Box */
.cta-box {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--color-bg);
    border-radius: 1rem;
    border: 2px solid var(--color-border);
}

.cta-box h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.cta-box p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

/* Buttons */
.architecture-theme .btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.architecture-theme .btn-primary:hover {
    background-color: #A07D5C;
    transform: translateY(-2px);
}

.architecture-theme .btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
}

.architecture-theme .btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Active nav link */
.architecture-theme .nav-link.active {
    color: var(--color-accent);
    font-weight: 600;
}

/* Tablet */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 2rem 1.5rem;
    }
}

/* Mobile */
@media (max-width: 768px) {
    /* Mobile Menu - Light Background with Transparency */
    .architecture-theme .nav-menu {
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--color-border);
    }
    
    .architecture-theme .nav-link {
        color: var(--color-text-primary);
    }
    
    .architecture-theme .nav-link:hover {
        background-color: var(--color-bg-alt);
        color: var(--color-accent);
    }
    
    .page-hero {
        padding: 5.5rem 0 2rem;
    }
    
    .section {
        padding: 2.5rem 0;
    }
    
    .section-title {
        font-size: 1.75rem;
        margin-bottom: 1.5rem;
    }
    
    .section-description {
        font-size: 0.9375rem;
        margin: 0 auto 2rem;
    }
    
    .approach-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .approach-card {
        padding: 1.5rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .workflow-timeline {
        margin: 2rem auto 0;
    }
    
    .workflow-timeline::before {
        left: 20px;
    }
    
    .workflow-step {
        padding-left: 60px;
        margin-bottom: 2rem;
    }
    
    .workflow-number {
        width: 44px;
        height: 44px;
        font-size: 1.125rem;
    }
    
    .project-image {
        height: 280px;
    }
    
    .project-title {
        font-size: 1.125rem;
        margin: 0.75rem 0 0;
    }
    
    .cta-box {
        padding: 2.5rem 1.5rem;
    }
    
    .cta-box h2 {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }
    
    .cta-box p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
}