/* --- Global Reset & Variables --- */
:root {
    --bg-color: #ffffff;
    --text-main: #222222;
    --text-light: #555555;
    --accent: #000000;
    --accent-hover: #333333;
    --border-color: #e0e0e0;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Animated background for ALTO Research page */
.animated-bg {
    background: linear-gradient(-45deg, #000000, #333333, #111111, #444444);
    background-size: 400% 400%;
    animation: gradientMove 12s ease infinite;
    color: white;
}

@keyframes gradientMove {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

ul {
    list-style-position: inside;
    margin: 1rem 0;
}

/* --- Header & Nav --- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    border-bottom: 1px solid var(--border-color);
    background: white;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

/* clickable logo container */
.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.logo-container {
    display: flex;
    align-items: center;
}

.site-logo {
    height: 40px;
    width: auto;
}

.logo-text {
    font-weight: 600;
    font-size: 1.1rem;
}

.thin-text {
    font-weight: 300;
    color: var(--text-light);
}

/* Desktop nav */
nav {
    display: flex;
    align-items: center;
}

nav a {
    margin-left: 20px;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover,
nav a.active {
    color: var(--accent);
    font-weight: 600;
}

/* Header Contact button (mobile only by default) */
.header-contact-btn {
    display: none;
    /* shown on mobile */
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    background: transparent;
    color: var(--accent);
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
}

.header-contact-btn:hover {
    background: #f5f5f5;
}

/* Hamburger button */
.menu-toggle {
    display: none;
    /* shown on mobile */
    width: 28px;
    height: 22px;
    border: none;
    background: none;
    padding: 0;
    cursor: pointer;
    position: relative;
}

.menu-toggle span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform 0.3s ease, top 0.3s ease, opacity 0.3s ease;
}

.menu-toggle span:nth-child(1) {
    top: 0;
}

.menu-toggle span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-toggle span:nth-child(3) {
    top: 100%;
    transform: translateY(-100%);
}

/* Hamburger open state (X) */
.menu-toggle.open span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

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

.menu-toggle.open span:nth-child(3) {
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* --- Main Layouts --- */
main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 5%;
    width: 100%;
}

/* --- ALTO Coming Soon Page --- */
.comingsoon-container {
    text-align: center;
    margin-top: 10%;
}

.comingsoon-container h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.comingsoon-container p {
    font-size: 1.5rem;
    opacity: 0.85;
}

/* --- Home Page Specifics --- */
.home-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h1 {
    font-size: 3.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.intro-text h2 {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.intro-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.highlight {
    font-weight: 500;
    color: var(--accent);
}

.cta-buttons {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--accent);
    display: inline-block;
}

.primary-btn {
    background-color: var(--accent);
    color: white;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
}

.secondary-btn {
    background-color: transparent;
    color: var(--accent);
}

.secondary-btn:hover {
    background-color: #f5f5f5;
}

/* --- Profile Card --- */
.profile-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform 0.2s;
}

.profile-card:hover {
    transform: translateY(-5px);
}

.card-image img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    margin-bottom: 1rem;
}

.card-details .role {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-icons img,
.footer-icons img {
    width: 24px;
    height: 24px;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.social-icons img:hover,
.footer-icons img:hover {
    opacity: 1;
}

/* --- Projects Page --- */
.page-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-light);
    margin-bottom: 3rem;
}

.project-item {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: start;
}

.project-image img {
    width: 100%;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.status {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
}

.status.current {
    background-color: #e0f2f1;
    color: #00695c;
}

.status.previous {
    background-color: #eceff1;
    color: #455a64;
}

.full-width {
    grid-column: 1 / -1;
}

blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text-light);
}

.divider {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 3rem 0;
}

/* --- About Page --- */
.about-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    object-fit: cover;
}

.about-text h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 0.75rem;
    font-size: 1.02rem;
}

/* --- Contact Page --- */
.contact-container {
    max-width: 800px;
    text-align: center;
}

.contact-options {
    margin: 2rem 0 3rem;
    display: flex;
    justify-content: center;
}

.contact-btn {
    font-size: 1rem;
}

.contact-form-wrapper {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    padding: 1rem;
    overflow: hidden;
}

.contact-form-wrapper iframe {
    width: 100%;
    border: 0;
}

/* --- Footer --- */
footer {
    background-color: #fafafa;
    border-top: 1px solid var(--border-color);
    padding: 2rem 5%;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.footer-icons {
    display: flex;
    gap: 20px;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {

    /* Hide logo text so only the image shows top-left */
    .logo-text {
        display: none;
    }

    /* Home layout stacks and reorder so profile card appears first */
    .home-container {
        display: flex;
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .profile-card-container {
        order: -1;
        /* show picture card above text */
    }

    .intro-text {
        order: 0;
    }

    .intro-text h1 {
        font-size: 2.5rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .project-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-text {
        text-align: left;
    }

    .contact-container {
        padding-top: 2rem;
    }

    .comingsoon-container {
        margin-top: 20%;
    }

    /* Show hamburger + header contact button on mobile */
    .menu-toggle {
        display: block;
    }

    .header-contact-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Mobile nav: hidden by default, slide-down menu when open */
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem 5%;
        display: none;
    }

    nav.nav-open {
        display: flex;
    }

    nav a {
        margin: 0.5rem 0;
    }

    /* ALTO mobile: transparent header by default, dark dropdown when open */
    body.animated-bg nav {
        background: transparent;
        border-bottom: none;
    }

    body.animated-bg nav.nav-open {
        background: rgba(0, 0, 0, 0.9);
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }
}

/* --- ALTO PAGE-SPECIFIC OVERRIDES (DARK THEME HEADER & FOOTER) --- */
body.animated-bg header {
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

body.animated-bg .logo-text {
    color: #ffffff;
}

body.animated-bg .thin-text {
    color: rgba(255, 255, 255, 0.7);
}

/* Make ALTO nav transparent on desktop (no black strip) */
body.animated-bg nav {
    background: transparent;
    border-bottom: none;
}

body.animated-bg nav a {
    color: rgba(255, 255, 255, 0.85);
}

body.animated-bg nav a:hover,
body.animated-bg nav a.active {
    color: #ffffff;
}

body.animated-bg footer {
    background: transparent;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

body.animated-bg .footer-content a {
    color: #ffffff;
}

body.animated-bg .menu-toggle span {
    background: #ffffff;
}

body.animated-bg .header-contact-btn {
    border-color: #ffffff;
    color: #ffffff;
}

body.animated-bg .header-contact-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* --- ALTO Page Back Button --- */
.alto-back-btn {
    display: inline-block;
    margin-top: 2rem;
    padding: 12px 28px;
    background: #ffffff;
    color: #000000;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    text-decoration: none;
    transition: 0.25s ease-in-out;
}

.alto-back-btn:hover {
    background: #e6e6e6;
}