/* ==========================================================================
   Esme Nicholson Portfolio - Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-primary: #1a1a1a;
    --color-background: #ffffff;
    --color-accent: #00A34B;
    --color-accent-hover: #66C793;
    --color-accent-light: rgba(0, 163, 75, 0.1);
    --color-gray-light: #f5f5f5;
    --color-gray-border: #e0e0e0;
    --color-gray-muted: #666666;

    /* Typography */
    --font-sans: 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Merriweather', Georgia, 'Times New Roman', serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --nav-height: 60px;
    --card-radius: 8px;
    --card-gap: 24px;
    --container-padding: 48px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-nav: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-serif);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* --------------------------------------------------------------------------
   Container & Grid
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* 12-column grid for desktop positioning */
.grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--card-gap);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: 30px; }
h3 { font-size: var(--text-2xl); }

.section-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-xl);
    color: var(--color-accent);
}

.about .section-title {
    margin-bottom: var(--space-md);
}


/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--color-background);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.nav.scrolled {
    box-shadow: var(--shadow-nav);
}

.nav__container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav__logo {
    font-family: var(--font-sans);
    font-size: 36px;
    font-weight: 800;
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

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

.nav__tagline {
    font-family: var(--font-sans);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-gray-muted);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__link {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-primary);
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

.nav__link:hover::after {
    width: 100%;
}

.nav__link.active {
    color: var(--color-accent);
}

.nav__link.active::after {
    width: 100%;
}

/* Hamburger Menu */
.nav__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav__hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.nav__hamburger.active span:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Navigation Overlay */
.nav__mobile-overlay {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-background);
    z-index: 999;
    display: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav__mobile-overlay.active {
    display: flex;
    opacity: 1;
}

.nav__mobile-links {
    width: 100%;
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.nav__mobile-link {
    font-family: var(--font-sans);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-primary);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-gray-border);
    transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-4xl);
    background-color: var(--color-background);
}

.about__content {
    display: flex;
    gap: var(--space-3xl);
    align-items: stretch;
}

.about__bio-wrapper {
    flex: 1;
}

.about__bio {
    font-family: var(--font-serif);
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--color-primary);
}

.about__logos {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

/* Wide screens (>1024px) - Brick pattern: 2 columns, 3 rows, offset */
.logo-strip {
    display: grid;
    grid-template-columns: repeat(2, 7.5rem);
    grid-template-rows: repeat(3, auto);
    gap: var(--space-lg);
    column-gap: var(--space-xl);
    padding-bottom: 2.5rem; /* Accommodate the brick offset on second column */
}

.logo-strip__item {
    width: 7.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Explicit grid placement for brick pattern */
.logo-strip__item:nth-child(1) { grid-area: 1 / 1; }
.logo-strip__item:nth-child(2) { grid-area: 2 / 1; }
.logo-strip__item:nth-child(3) { grid-area: 3 / 1; }
.logo-strip__item:nth-child(4) { grid-area: 1 / 2; }
.logo-strip__item:nth-child(5) { grid-area: 2 / 2; }
.logo-strip__item:nth-child(6) { grid-area: 3 / 2; }

/* Offset second column by half logo height + half gap for brick effect */
.logo-strip__item:nth-child(n+4) {
    transform: translateY(calc(50% + var(--space-lg) / 2));
}

.logo-strip__item img {
    width: 100%;
    height: auto;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: opacity var(--transition-base), filter var(--transition-base);
}

.logo-strip__item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* --------------------------------------------------------------------------
   Work Section
   -------------------------------------------------------------------------- */
.work {
    padding: var(--space-2xl) 0 var(--space-4xl) 0;
    background-color: var(--color-gray-light);
}

.work__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--card-gap);
}

/* Card Styles */
.card {
    background-color: var(--color-background);
    border-radius: var(--card-radius);
    border: 1px solid var(--color-gray-border);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.card__image {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    background-color: var(--color-gray-light);
    overflow: hidden;
}

.card__image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card__image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-gray-light) 0%, var(--color-gray-border) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card__image-placeholder::after {
    content: '';
    width: 40px;
    height: 40px;
    background-color: var(--color-accent-light);
    border-radius: 50%;
    opacity: 0.5;
}

.card__content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card__title {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    transition: color var(--transition-fast);
}

.card__show {
    font-family: var(--font-serif);
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.card__broadcaster {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    color: var(--color-gray-muted);
    margin-bottom: var(--space-sm);
}

.card__date {
    font-family: var(--font-sans);
    font-size: var(--text-xs);
    color: var(--color-gray-muted);
    margin-top: auto;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    padding: var(--space-4xl) 0;
    background-color: var(--color-background);
}

.contact__content {
    max-width: 400px;
    margin-left: auto;
}

.contact__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 500;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--card-radius);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.contact__link--linkedin {
    background-color: var(--color-gray-light);
    color: var(--color-primary);
}

.contact__link--linkedin:hover {
    background-color: #0A66C2;
    color: white;
}

.contact__link--email {
    background-color: var(--color-accent);
    color: white;
}

.contact__link--email:hover {
    background-color: var(--color-accent-hover);
}

.contact__icon {
    width: 20px;
    height: 20px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    padding: var(--space-xl) 0;
    background-color: var(--color-gray-light);
}

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

.footer p {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--color-gray-muted);
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --container-padding: 32px;
    }

    .work__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about__content {
        flex-direction: column;
        gap: var(--space-2xl);
    }

    .about__logos {
        width: 100%;
    }

    /* Medium screens (850px-1024px) - Single row of 6 logos */
    .logo-strip {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-around;
        gap: 0;
        width: 100%;
        padding-bottom: 0;
    }

    .logo-strip__item,
    .logo-strip__item:nth-child(n) {
        transform: none;
        grid-area: unset;
    }

    .contact__content {
        max-width: 100%;
        margin-left: 0;
    }
}

/* Narrow screens (< 850px) - Two rows of 3 logos */
@media (max-width: 850px) {
    .logo-strip {
        display: grid;
        grid-template-columns: repeat(3, 7.5rem);
        grid-template-rows: repeat(2, auto);
        justify-content: space-around;
        gap: var(--space-lg);
        width: 100%;
    }

    .logo-strip__item,
    .logo-strip__item:nth-child(n) {
        grid-area: auto;
        transform: none;
    }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
    :root {
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
        --text-3xl: 1.5rem;
        --space-4xl: 4rem;
        --container-padding: 24px;
    }

    /* Navigation */
    .nav__links {
        display: none;
    }

    .nav__hamburger {
        display: flex;
    }

    .nav__brand {
        flex-direction: column;
        gap: 0;
        align-items: flex-start;
    }

    .nav__logo {
        font-size: 1.25rem;
    }

    .nav__tagline {
        font-size: var(--text-sm);
    }

    /* About */
    .about {
        padding-top: calc(var(--nav-height) + var(--space-2xl));
        padding-bottom: var(--space-3xl);
    }

    .about__content {
        flex-direction: column;
        gap: var(--space-2xl);
    }

    .about__logos {
        width: 100%;
    }

    /* Work */
    .work {
        padding: var(--space-3xl) 0;
    }

    .work__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    /* Contact */
    .contact {
        padding: var(--space-3xl) 0;
    }

    .contact__links {
        flex-direction: column;
    }

    .contact__link {
        justify-content: center;
    }
}

/* Small Mobile (< 480px) */
@media (max-width: 480px) {
    :root {
        --space-lg: 1rem;
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .hero__subtitle {
        font-size: var(--text-base);
    }

    /* Logo strip: 2 columns filling container width */
    .logo-strip {
        grid-template-columns: repeat(2, 1fr);
        justify-content: stretch;
    }

    .logo-strip__item,
    .logo-strip__item:nth-child(n) {
        width: 100%;
        grid-area: auto;
        transform: none;
    }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Reduced motion preference */
@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;
    }
}