/*
Theme Name: Scalene Portfolio – Premium Edition
Theme URI: https://scalenedesign.com
Author: Scalene Designs
Description: Premium editorial portfolio with dark mode, category filtering, and floating nav. High-end aesthetic for Amazon design studios.
Version: 2.0.0
License: GPL-2.0-or-later
Text Domain: scalene
*/

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --font-heading: 'Space Grotesk', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --color-primary: #fd6603;
    --color-dark: #000000;
    --color-secondary: #d95223;
    --color-light: #ffffff;
    --color-gray-light: #f5f5f5;
    --color-gray-dark: #2a2a2a;
    --color-gray-border: #e0e0e0;

    /* Light mode (default) */
    --bg: var(--color-light);
    --fg: var(--color-dark);
    --border: var(--color-gray-border);
    --text-muted: #666666;

    --margin-horizontal: 12vw;
    --gap: 24px;
    --radius: 0px;
}

/* Dark mode */
body.dark-mode {
    --bg: var(--color-dark);
    --fg: var(--color-light);
    --border: var(--color-gray-dark);
    --text-muted: #aaaaaa;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    transition: background 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

/* --- HEADER --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-logo-header {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    text-transform: uppercase;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-get-in-touch {
    background: var(--color-primary);
    color: var(--color-light);
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    border-radius: 0;
}

.btn-get-in-touch:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}

.hamburger-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 24px;
    color: var(--fg);
    padding: 0;
    display: none;
    flex-direction: column;
    gap: 6px;
}

.hamburger-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--fg);
    transition: all 0.3s ease;
}

.menu-dropdown {
    position: absolute;
    top: 70px;
    right: 32px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0;
    overflow: hidden;
    min-width: 200px;
    display: none;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.menu-dropdown.open {
    display: block;
}

.menu-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.menu-item:last-child {
    border-bottom: none;
}

.menu-item:hover {
    background: var(--color-primary);
    color: var(--color-light);
}

.menu-item-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle-switch {
    width: 32px;
    height: 18px;
    background: var(--border);
    border-radius: 9px;
    position: relative;
    transition: background 0.3s ease;
}

.toggle-switch.active {
    background: var(--color-primary);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: var(--color-light);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: left 0.3s ease;
}

.toggle-switch.active::after {
    left: 16px;
}

/* --- MAIN CONTENT --- */
body {
    padding-top: 64px;
}

.site-main {
    max-width: 100vw;
    margin: 0 auto;
    padding: var(--gap) var(--margin-horizontal);
    min-height: calc(100vh - 64px);
    padding-bottom: 120px;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    margin: 40px 0 60px;
    text-align: center;
    letter-spacing: -0.03em;
}

/* --- MASONRY (3-COLUMN CENTERED) --- */
.masonry {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
    max-width: 100%;
}

.masonry-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.masonry-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.masonry-item:hover img {
    transform: scale(1.05);
}

.masonry-item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.35s ease;
}

.masonry-item:hover .masonry-item-overlay {
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
}

.masonry-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-light);
    font-size: 24px;
    transition: transform 0.3s ease;
}

.masonry-item:hover .masonry-icon {
    transform: scale(1.1);
}

/* --- FLOATING BOTTOM CATEGORY FILTER --- */
.category-filter {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg);
    border-top: 2px solid var(--color-primary);
    z-index: 900;
    padding: 16px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.category-list {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.category-item {
    padding: 12px 24px;
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-right: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-muted);
}

.category-item:last-child {
    border-right: none;
}

.category-item:hover {
    background: var(--color-gray-light);
    color: var(--color-primary);
}

body.dark-mode .category-item:hover {
    background: var(--color-gray-dark);
}

.category-item.active {
    background: var(--color-primary);
    color: var(--color-light);
}

.category-logo {
    width: 48px;
    height: 48px;
    background: transparent;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-logo:hover {
    background: var(--color-primary);
}

.category-logo svg {
    width: 24px;
    height: 24px;
    fill: var(--color-primary);
}

.category-logo.active svg {
    fill: var(--color-light);
}

/* --- EMPTY STATE --- */
.empty-state {
    text-align: center;
    padding: 60px 0;
    color: var(--text-muted);
}

/* --- RESPONSIVE --- */
@media (max-width: 1200px) {
    .masonry {
        grid-template-columns: repeat(2, 1fr);
    }
    :root {
        --margin-horizontal: 8vw;
    }
}

@media (max-width: 768px) {
    .masonry {
        grid-template-columns: 1fr;
    }
    :root {
        --margin-horizontal: 16px;
    }

    .site-header {
        padding: 0 16px;
    }

    .page-title {
        font-size: 32px;
        margin: 24px 0 40px;
    }

    .hamburger-btn {
        display: flex;
    }

    .category-filter {
        flex-wrap: wrap;
        gap: 0;
    }

    .category-item {
        padding: 8px 16px;
        font-size: 11px;
        flex: 1;
        text-align: center;
    }
}