:root {
    --accent: rgba(0, 140, 255, 0.9);
    --text: #e8ecf2;
    --muted: rgba(255, 255, 255, 0.7);
    --glass: rgba(255, 255, 255, 0.15);
    --border: rgba(255, 255, 255, 0.25);
    --bg: radial-gradient(circle at top left, #0b0f19, #1b2838);
    --blur: 18px;
    --radius: 16px;
}

/* ====== Base Layout ====== */
html {
    scroll-behavior: smooth;
    background: var(--bg);
}

body {
    margin: 0;
    font-family: "Inter", system-ui, sans-serif;
    color: var(--text);
    overflow-x: hidden;
}

/* ====== Header & Navigation ====== */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 15, 25, 0.75);
    backdrop-filter: blur(var(--blur));
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 3rem;
    z-index: 1000;
}

.nav-header h1 {
    font-size: 1.3rem;
    color: var(--text);
    margin: 0;
}

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

.nav-header nav a {
    color: var(--muted);
    margin: 0 1rem;
    text-decoration: none;
    position: relative;
    transition: color 0.3s;
    font-size: 1rem;
}

.nav-header nav a:hover {
    color: var(--accent);
}

.nav-header nav a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-toggle {
    display: none;;
}

/* ====== Main Content ====== */
main {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 2rem;
    padding-top: 100px;
}

h2 {
    color: var(--accent);
    margin-top: 0;
}

/* ====== Glass Card ====== */
.glass {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    margin-bottom: 2rem;
    padding: 2rem;
}

/* ====== Projects ====== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.project-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 140, 255, 0.2);
}

.project-card a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    margin-top: auto;
}

/* ====== Skills ====== */
.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill {
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    font-size: 14px;
    transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.skill:hover {
    /* background: var(--accent); */
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 140, 255, 0.2);
}

/* ====== Contact Section ====== */
.contact-section .contact-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.07);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(0, 140, 255, 0.07);
}

.contact-section .contact-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-section .contact-email {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--accent);
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    word-break: break-all;
    transition: color 0.2s;
}

.contact-section .contact-email:hover {
    color: #fff;
    text-decoration: underline;
}

/* ====== Footer ====== */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--muted);
}

/* ====== Animations ====== */
.fade-in {
    opacity: 0;
    transform: translateY(15px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ====== Responsive Design ====== */
@media (max-width: 700px) {
    .nav-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 0.7rem 1.2rem;
    }
    .nav-header h1 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    .nav-header nav {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        display: none;
        background: rgba(10, 15, 25, 0.97);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        border-bottom-left-radius: var(--radius);
        border-bottom-right-radius: var(--radius);
        box-shadow: 0 6px 24px rgba(0,0,0,0.12);
        padding: 0.5rem 1.2rem 1rem 1.2rem;
        z-index: 1001;
    }
    .nav-header.open nav {
        display: flex;
    }
    .nav-header nav a {
        margin: 0.5rem 0;
        font-size: 1.05rem;
        width: 100%;
        padding: 0.5rem 0;
    }
    /* Hamburger */
    .nav-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        margin-left: auto;
        margin-top: 0.2rem;
        margin-bottom: 0.2rem;
        z-index: 1002;
    }
    .nav-toggle span,
    .nav-toggle span:before,
    .nav-toggle span:after {
        display: block;
        background: var(--accent);
        height: 3px;
        width: 28px;
        border-radius: 2px;
        position: relative;
        transition: all 0.3s;
    }
    .nav-toggle span:before,
    .nav-toggle span:after {
        content: '';
        position: absolute;
        left: 0;
    }
    .nav-toggle span:before {
        top: -9px;
    }
    .nav-toggle span:after {
        top: 9px;
    }
    .nav-header.open .nav-toggle span {
        background: transparent;
    }
    .nav-header.open .nav-toggle span:before {
        transform: rotate(45deg) translate(5px,5px);
    }
    .nav-header.open .nav-toggle span:after {
        transform: rotate(-45deg) translate(5px,-5px);
    }
    main {
        padding: 0 0.5rem;
        padding-top: 80px;
    }
    .glass {
        padding: 1.1rem;
        border-radius: 10px;
        margin-bottom: 1.2rem;
    }
    .project-grid {
        grid-template-columns: 1fr;
        gap: 0.9rem;
    }
    .project-card {
        padding: 1rem;
        border-radius: 10px;
    }
    .skills {
        gap: 7px;
    }
    .skill {
        font-size: 13px;
        padding: 5px 10px;
    }
    .contact-section .contact-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
        padding: 1rem;
        border-radius: 10px;
    }
}