/* ==========================================================================
   LAYOUT - Portfolio Jeremy Alan
   Header, Footer, and page structure
   ========================================================================== */

/* --------------------------------------------------------------------------
   HEADER
   -------------------------------------------------------------------------- */
.header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.03);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
}

.logo-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    transition: color var(--transition-fast);
}

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

/* Navigation Toggle (Mobile) */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: calc(var(--z-header) + 1);
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-xl);
    padding: var(--space-20) var(--space-6) var(--space-6);
    transition: right var(--transition-slow);
    z-index: var(--z-header);
}

.nav.active {
    right: 0;
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.nav-link.active {
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* Nav Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: calc(var(--z-header) - 1);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

/* Desktop Navigation */
@media (min-width: 768px) {
    .header .container {
        height: 72px;
    }

    .nav-toggle {
        display: none;
    }

    .nav {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background-color: transparent;
        box-shadow: none;
        padding: 0;
        display: flex;
        align-items: center;
        gap: var(--space-2);
    }

    .nav-list {
        flex-direction: row;
        gap: var(--space-1);
    }

    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--space-2) var(--space-4);
    }
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
    background-color: var(--color-text);
    color: white;
    padding: var(--space-12) 0 var(--space-6);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.footer-info {
    text-align: center;
}

.footer-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-1);
}

.footer-role {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: white;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .footer-info {
        text-align: left;
    }
}

/* --------------------------------------------------------------------------
   PAGE HEADER (for inner pages)
   -------------------------------------------------------------------------- */
.page-header {
    padding: var(--space-12) 0;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border-light);
}

.page-header-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-3);
}

.page-header-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 600px;
}

@media (min-width: 768px) {
    .page-header {
        padding: var(--space-16) 0;
    }

    .page-header-title {
        font-size: var(--font-size-4xl);
    }

    .page-header-subtitle {
        font-size: var(--font-size-lg);
    }
}

/* --------------------------------------------------------------------------
   CASE STUDY DETAIL LAYOUT
   -------------------------------------------------------------------------- */
.case-study-header {
    padding: var(--space-12) 0;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border-light);
}

.case-study-badge {
    margin-bottom: var(--space-4);
}

.case-study-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-2);
}

.case-study-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .case-study-header {
        padding: var(--space-16) 0;
    }

    .case-study-title {
        font-size: var(--font-size-4xl);
    }
}

@media (min-width: 1024px) {
    .case-study-title {
        font-size: var(--font-size-5xl);
    }
}

/* Content Sections */
.content-section {
    padding: var(--space-10) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.content-section:last-child {
    border-bottom: none;
}

.content-section-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-6);
    color: var(--color-text);
}

.content-section-subtitle {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--space-6);
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

.content-section p {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.content-section ul {
    margin-top: var(--space-4);
    padding-left: var(--space-5);
}

.content-section ul li {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
    position: relative;
}

.content-section ul li::before {
    content: '•';
    color: var(--color-accent);
    position: absolute;
    left: calc(-1 * var(--space-5));
}

@media (min-width: 768px) {
    .content-section {
        padding: var(--space-12) 0;
    }

    .content-section-title {
        font-size: var(--font-size-2xl);
    }
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    transition: color var(--transition-fast);
}

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

.back-link svg {
    width: 16px;
    height: 16px;
}

/* --------------------------------------------------------------------------
   ABOUT PAGE LAYOUT
   -------------------------------------------------------------------------- */
.about-bio {
    max-width: 720px;
}

.about-bio p {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.about-section {
    padding: var(--space-10) 0;
}

.about-section-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .about-section {
        padding: var(--space-12) 0;
    }

    .about-section-title {
        font-size: var(--font-size-2xl);
    }
}

/* CV Download */
.cv-download {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
}

.cv-download p {
    margin: 0;
    color: var(--color-text-secondary);
}

@media (min-width: 768px) {
    .cv-download {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

/* Contact Links */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.contact-link:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.contact-link svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

@media (min-width: 768px) {
    .contact-links {
        flex-direction: row;
    }

    .contact-link {
        flex: 1;
    }
}