@import url('https://api.fontsource.org/v1/fonts/satoshi/latin-400-normal.css');
@import url('https://api.fontsource.org/v1/fonts/satoshi/latin-700-normal.css');

/* ── CSS Custom Properties (Light = default, salmon/blue theme) ── */
:root {
    --salmon: #FAC7B4;
    --blue: #00213A;
    --blue-light: #1a3a52;
    --text-on-blue: #ffffff;
    --text-muted: rgba(255,255,255,0.85);
    --bg-body: #FAC7B4;
    --bg-section: #00213A;
    --nav-bg: #00213A;
    --nav-text: #FAC7B4;
    --hero-bg: #FAC7B4;
    --hero-text: #00213A;
    --hero-muted: #1a3a52;
    --accent: #FAC7B4;
    --card-bg: rgba(255,255,255,0.06);
    --card-border: rgba(250,199,180,0.15);
    --input-bg: rgba(255,255,255,0.08);
    --input-border: rgba(250,199,180,0.3);
    --footer-text: rgba(250,199,180,0.5);
    --skill-bg: rgba(250,199,180,0.15);
    --skill-text: #FAC7B4;
    --shadow: rgba(0,0,0,0.3);
}

/* ── Dark/Light toggle: "light" mode swaps the palette ── */
[data-theme="light"] {
    --salmon: #00213A;
    --blue: #FAC7B4;
    --text-on-blue: #00213A;
    --text-muted: rgba(0,33,58,0.9);
    --bg-body: #ffffff;
    --bg-section: #ffffff;
    --nav-bg: #ffffff;
    --nav-text: #00213A;
    --hero-bg: #ffffff;
    --hero-text: #00213A;
    --hero-muted: #1a3a4a;
    --accent: #00213A;
    --card-bg: rgba(0,33,58,0.05);
    --card-border: rgba(0,33,58,0.12);
    --input-bg: rgba(0,33,58,0.06);
    --input-border: rgba(0,33,58,0.2);
    --footer-text: rgba(0,33,58,0.85);
    --skill-bg: rgba(0,33,58,0.1);
    --skill-text: #00213A;
    --shadow: rgba(0,0,0,0.1);
}

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

/* ── Base ── */
html {
    --nav-height: 80px;
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: 'Satoshi', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-on-blue);
    background-color: var(--bg-body);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ── Skip link (accessibility) ── */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: var(--bg-section);
    border-radius: 4px;
    z-index: 200;
    font-weight: 700;
    text-decoration: none;
}

.skip-link:focus {
    top: 0.5rem;
}

/* ── Navigation ── */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    gap: 2rem;
    padding: 1rem 2rem;
    background: var(--nav-bg);
    box-shadow: 0 2px 4px var(--shadow);
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: background 0.3s;
}

nav a {
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover,
nav a:focus-visible {
    opacity: 0.7;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-text {
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.3s, filter 0.3s;
}

.logo-img {
    height: 40px;
    width: 40px;
    object-fit: cover;
    border-radius: 50%;
    background: var(--nav-bg);
    transition: transform 0.3s, filter 0.3s;
}


.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-resume {
    padding: 0.4rem 1rem;
    border: 2px solid var(--nav-text);
    border-radius: 5px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.3s, color 0.3s;
}

.nav-resume:hover {
    background: var(--nav-text);
    color: var(--nav-bg);
    opacity: 1;
}

[data-theme="light"] .nav-resume {
    background: transparent;
    color: var(--nav-text);
}

[data-theme="light"] .nav-resume:hover {
    background: var(--nav-text);
    color: var(--nav-bg);
}

/* Hamburger menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 110;
}

.menu-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Theme toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--nav-text);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--nav-text);
    transition: background 0.3s, color 0.3s;
}

.theme-toggle:hover {
    background: var(--nav-text);
    color: var(--nav-bg);
}

.icon-moon { display: none; }

[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ── Sections base ── */
section {
    padding: 5rem 2rem;
}

/* ── Hero ── */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hero-bg);
    color: var(--hero-text);
    transition: background 0.3s, color 0.3s;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.tagline {
    font-size: 1.2rem;
    color: var(--hero-muted);
    max-width: 700px;
    line-height: 1.7;
}

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

.hero-photo {
    flex-shrink: 0;
}

.hero-seal {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    background: var(--hero-bg);
    transition: transform 0.3s, filter 0.3s;
}

.hero-seal:hover {
    transform: scale(1.06);
    filter: drop-shadow(0 6px 20px rgba(0,33,58,0.3));
}

/* ── CTA Buttons ── */
.cta-button {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--accent);
    color: var(--bg-section);
    text-decoration: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--accent);
    cursor: pointer;
    transition: opacity 0.3s, background 0.3s, color 0.3s;
    font-family: inherit;
}

.cta-button:hover,
.cta-button:focus-visible {
    opacity: 0.85;
}

.cta-outline {
    background: transparent;
    color: var(--hero-text);
    border: 2px solid var(--hero-text);
}

.cta-outline:hover {
    background: var(--hero-text);
    color: var(--hero-bg);
    opacity: 1;
}

/* Light mode: hero CTA buttons — outlined by default, filled on hover */
[data-theme="light"] .hero-cta .cta-outline {
    background: transparent;
    color: var(--hero-text);
    border-color: var(--hero-text);
}

[data-theme="light"] .hero-cta .cta-outline:hover {
    background: var(--accent);
    color: var(--hero-bg);
    border-color: var(--accent);
}

/* Contact links layout */
.contact-links {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Contact submit — outlined salmon in dark mode, inverts on hover */
.contact-submit {
    display: block;
    width: 100%;
    max-width: 400px;
    padding: 1.1rem 2rem;
    font-size: 1.15rem;
    text-align: center;
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.contact-submit:hover {
    background: var(--accent);
    color: var(--bg-section);
    opacity: 1;
}

[data-theme="light"] #contact .cta-button {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

[data-theme="light"] #contact .cta-button:hover {
    background: var(--accent);
    color: var(--bg-section);
    opacity: 1;
}

/* Links in blue sections */
#about a,
#experience a,
#projects a,
#contact a {
    color: var(--accent);
}

#about a:visited,
#experience a:visited,
#projects a:visited,
#contact a:visited {
    color: var(--accent);
}

/* Section backgrounds */
#about,
#experience,
#projects,
#contact {
    background: var(--bg-section);
    color: var(--text-on-blue);
    transition: background 0.3s, color 0.3s;
}

h2 {
    color: var(--accent);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

h3 {
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.wip-badge {
    font-size: 0.75em;
    font-weight: 400;
    opacity: 0.6;
    vertical-align: middle;
}

/* ── About ── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-bio p {
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.about-bio ul {
    padding-left: 1.5rem;
}

.about-bio li {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-tag {
    padding: 0.35rem 0.9rem;
    background: var(--skill-bg);
    color: var(--skill-text);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: default;
}

.skill-tag:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ── Wave dividers ── */
.wave-bottom-salmon,
.wave-bottom-blue,
.wave-top-blue {
    line-height: 0;
    margin: 0;
    padding: 0;
    display: block;
}

.wave-bottom-blue svg,
.wave-top-blue svg {
    display: block;
    width: 100%;
    height: 120px;
}

.wave-bottom-blue {
    background: var(--bg-section);
    transition: background 0.3s;
}

.wave-top-blue {
    background: var(--bg-section);
    transition: background 0.3s;
}

.salmon-gap {
    height: 60px;
    background: var(--salmon);
    transition: background 0.3s;
}

/* ── Experience timeline ── */
.timeline {
    position: relative;
    padding-left: 2.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    opacity: 0.3;
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -2.5rem;
    top: 0.35rem;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    transform: translateX(-5.5px);
}

.timeline-date {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.25rem;
    letter-spacing: 0.5px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.2rem;
}

.timeline-org {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.timeline-content p:last-child {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ── Projects grid ── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.75rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.project-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.project-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.project-tags span {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    color: var(--text-muted);
}

.project-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity 0.3s;
}

.project-links a:hover {
    opacity: 0.7;
}

/* ── Contact ── */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: var(--text-on-blue);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    outline: 2px solid var(--accent);
    outline-offset: -1px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.5;
}

.form-status {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--accent);
}

.contact-info h3 {
    margin-bottom: 1.25rem;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, filter 0.2s;
}

.social-links a:hover {
    transform: translateX(6px);
    filter: drop-shadow(0 2px 8px rgba(250,199,180,0.4));
}

/* ── Footer ── */
footer {
    background: var(--bg-section);
    padding: 2.5rem 2rem;
    transition: background 0.3s;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    justify-content: center;
}

.footer-links a {
    color: var(--footer-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: var(--footer-text);
    transition: color 0.3s;
}

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

.footer-copy {
    color: var(--footer-text);
    font-size: 0.85rem;
}

/* ── Focus visible for accessibility ── */
/* Fallback for browsers without :focus-visible (Safari <15.4) */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Remove outline on mouse click for browsers that support :focus-visible */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
    outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    /* Mobile nav */
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: var(--nav-bg);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right 0.3s ease;
        box-shadow: -4px 0 12px var(--shadow);
    }

    .nav-links.open {
        right: 0;
    }

    /* Hero */
    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
    }

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

    .tagline {
        font-size: 1.05rem;
    }

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

    .hero-seal {
        width: 150px;
        height: 150px;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* General */
    h2 {
        font-size: 1.6rem;
    }

    section {
        padding: 3.5rem 1.25rem;
    }

    .wave-bottom-blue svg,
    .wave-top-blue svg {
        height: 80px;
    }
}

@media (max-width: 600px) {
    .hero-text h1 {
        font-size: 2.2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    h2 {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    html {
        --nav-height: 60px;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    nav {
        padding: 0.75rem 1.25rem;
    }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}