/* ============================================================
   Portfolio Template — shared stylesheet
   Used by every project page. Edit here once, every page updates.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600&display=swap');

:root {
    --bg: #0b0f0b;
    --text: #c0cfb2;
    --panel: #324935;
    --accent: #4ca1af;
    --accent-hover: #3a7d8a;
    --heading: #E1EEBC;
    --cream: #f2e8d3;

    --header-height: 4.5rem;
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 0px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 1.1rem;
}

/* ── Header: logo strip only ── */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    padding: 0 1.5rem;
    background-color: rgba(11, 15, 11, 0.92);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 200;
    border-bottom: 1px solid rgba(192, 207, 178, 0.1);
}

header .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

header .logo img {
    height: calc(var(--header-height) - 1.5rem);
    display: block;
}

header .logo h1 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text);
}

header .logo p {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 300;
}

/* ── Hamburger (mobile nav toggle) ── */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 300;
    padding: 4px;
    background: none;
    border: none;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: 0.3s ease;
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Sidebar navigation (left, vertical) ── */
nav#sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    overflow-y: auto;
    padding: 1.5rem 0;
    background-color: rgba(11, 15, 11, 0.97);
    border-right: 1px solid rgba(192, 207, 178, 0.1);
    z-index: 150;
    transition: transform 0.3s ease;
}

nav#sidebar ul {
    list-style: none;
    display: flex;
    flex-direction: column;
}

nav#sidebar li {
    margin: 0;
}

nav#sidebar a {
    display: block;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-left: 3px solid transparent;
    transition: background-color 0.3s, border-color 0.3s;
}

nav#sidebar a:hover {
    background-color: rgba(76, 161, 175, 0.15);
}

nav#sidebar a.active {
    background-color: rgba(76, 161, 175, 0.15);
    border-left-color: var(--accent);
    color: var(--heading);
}

/* Overlay shown behind the sidebar on mobile when it's open */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 140;
}

/* ── Main content ── */
main {
    margin-left: var(--sidebar-width);
    padding-top: var(--header-height);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── Project hero ── */
.project-hero {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 3rem 5% 0;
}

.project-hero-image {
    flex: 1;
    min-width: 300px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    height: 321px;
    position: relative;
}

.project-hero-image img {
    width: 100%;
    height: 100%;
    display: block;
    transition: transform 0.3s;
    object-fit: cover;
    object-position: center;
}

.project-hero-image img:hover {
    transform: scale(1.02);
}

.project-hero-details {
    flex: 1;
    min-width: 300px;
}

.project-meta {
    background-color: var(--panel);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
}

.meta-item {
    margin-bottom: 0.8rem;
}

.meta-item h3 {
    color: var(--heading);
    margin-bottom: 0.3rem;
    font-size: 1rem;
}

.meta-item p {
    color: var(--cream);
}

.project-links a {
    display: inline-block;
    background-color: var(--accent);
    color: var(--cream);
    padding: 0.7rem 1.5rem;
    margin-right: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s;
}

.project-links a:hover {
    background-color: var(--accent-hover);
}

/* ── Sections ── */
.section {
    background-color: var(--panel);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    margin: 0 5% 2rem;
    scroll-margin-top: calc(var(--header-height) + 1rem);
}

.section h2 {
    color: var(--heading);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.section p {
    margin-bottom: 1rem;
}

.custom-list {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.custom-list li {
    margin-bottom: 0.5rem;
}

/* ── Gallery ── */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.gallery-item {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* ── Features list ── */
.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.feature-card {
    background-color: var(--cream);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    color: var(--text);
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: black;
}

/* ── Footer ── */
footer {
    background-color: var(--bg);
    color: var(--cream);
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

footer p {
    margin-bottom: 0.5rem;
}

.social-links {
    margin-top: 1rem;
}

.social-links a {
    color: var(--cream);
    margin: 0 0.5rem;
    font-size: 1.2rem;
    text-decoration: none;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--accent);
}

/* ── Collapsible blocks ── */
.collapsible-toggle {
    display: none;
}

.collapsible-content {
    display: none;
}

.collapsible-toggle:checked + .collapsible-btn + .collapsible-content {
    display: block;
    max-height: none;
}

.content-inner {
    padding: 18px;
    background: var(--cream);
    color: black;
}

.collapsible-btn {
    display: block;
    background: #777;
    color: var(--cream);
    padding: 18px;
    cursor: pointer;
    margin-bottom: 5px;
}

.collapsible-btn:hover {
    background: #555;
}

.collapsible-btn::after {
    content: '▼';
    float: right;
    transform: rotate(90deg);
    transition: transform 0.3s ease;
}

.collapsible-toggle:checked ~ .collapsible-btn::after {
    transform: rotate(0deg);
}

.wrapper {
    display: flex;
    gap: 4rem;
    flex-wrap: wrap;
}

.left {
    flex: 1 1 60%;
}

.right {
    flex: 1 1 30%;
}

.center-img {
    display: block;
    margin: auto;
    width: 65%;
    max-width: 100%;
}

/* ── Code blocks ── */
pre {
    padding: 0.5em;
    margin: 0.3em 0;
    border: 1px solid #f0f0f0;
    background: #f8f8f8;
    overflow: auto;
    border-radius: 4px;
}

/* ============================================================
   Responsive: sidebar becomes an off-canvas drawer
   ============================================================ */
@media (max-width: 900px) {
    :root {
        --sidebar-width: 240px;
    }

    .hamburger {
        display: flex;
    }

    nav#sidebar {
        transform: translateX(-100%);
    }

    nav#sidebar.nav-open {
        transform: translateX(0);
        box-shadow: 4px 0 12px rgba(0, 0, 0, 0.4);
    }

    body.nav-open .nav-overlay {
        display: block;
    }

    main {
        margin-left: 0;
    }

    .project-hero,
    .section {
        margin-left: 5%;
        margin-right: 5%;
    }

    .wrapper {
        flex-direction: column;
    }
}