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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #faf9f8;
    color: #1e1e2a;
    line-height: 1.5;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

html {
    scroll-padding-top: 80px;
    scroll-behavior: smooth;
}

/* Header & Navigation */
header {
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background: rgba(255,255,255,0.9);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Hamburger button - hidden on desktop */
.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #008787;
    padding: 0.5rem;
    transition: color 0.2s;
}

.hamburger:hover {
    color: #006767;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: #334155;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #008787;
}

/* Sections */
section {
    padding: 5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

section:last-of-type {
    border-bottom: none;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #1e293b, #008787);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #0f172a;
}

.hero p {
    font-size: 1.25rem;
    color: #475569;
    max-width: 600px;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background: #008787;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s, transform 0.1s;
}

.btn:hover {
    background: #006767;
    transform: translateY(-2px);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: box-shadow 0.2s;
}

.project-card:hover {
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-card p {
    color: #475569;
    margin-bottom: 1rem;
}

.project-tag {
    display: inline-block;
    background: #e0f0f0;
    color: #008787;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
}

/* Contact */
.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 1rem;
}

.contact-card {
    background: white;
    padding: 1.5rem;
    border-radius: 20px;
    flex: 1;
    min-width: 200px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.contact-card a {
    color: #008787;
    text-decoration: none;
    font-weight: 500;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* Form */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 24px;
    margin-top: 2rem;
    max-width: 600px;
}

.form-group {
    margin-bottom: 1rem;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-family: inherit;
    transition: border-color 0.2s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #008787;
}

button {
    background: #008787;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #006767;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #64748b;
    font-size: 0.875rem;
}

footer img {
    display: block;
    margin: 0.5rem auto 0;
}

/* ============================================ */
/* MOBILE HAMBURGER MENU - ADDED SECTION */
/* ============================================ */

@media (max-width: 768px) {
    /* Hide desktop navigation, show hamburger */
    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1.5rem 0 0.5rem 0;
    }

    .nav-links.active {
        display: flex;
    }

    nav {
        flex-wrap: wrap;
        justify-content: space-between;
    }

    h1 {
        font-size: 2.25rem;
    }

    section {
        padding: 3rem 0;
    }
}

/* Extra small phones (below 480px) */
@media (max-width: 480px) {
    .logo img {
        height: 45px !important;
    }

    .container {
        padding: 0 1rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .project-card h3 {
        font-size: 1.25rem;
    }
}