/* GLOBAL STYLES */
:root {
    --primary: #2563eb;       /* Professional Blue */
    --primary-hover: #1d4ed8;
    --dark: #1e293b;          /* Dark Slate */
    --light: #f8fafc;         /* Off-white background */
    --gray: #64748b;          /* Text gray */
    --border: #e2e8f0;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* NAVIGATION */
nav {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo { font-size: 1.2rem; font-weight: 700; color: var(--primary); }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { font-size: 0.95rem; color: var(--dark); font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

/* LAYOUT */
.container { max-width: 1000px; margin: 0 auto; padding: 2rem; flex: 1; }

/* BUTTONS */
.btn {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}
.btn:hover { background-color: var(--primary-hover); }

/* HERO SECTION */
.hero { text-align: center; padding: 4rem 1rem; }
.profile-img {
    width: 150px; height: 150px;
    border-radius: 50%; object-fit: cover;
    margin-bottom: 1.5rem; border: 3px solid var(--border);
}
.hero h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.hero p { color: var(--gray); margin-bottom: 2rem; font-size: 1.1rem; }

/* PROJECTS GRID */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem; margin-top: 2rem;
}
.card {
    background: white; border: 1px solid var(--border);
    border-radius: 6px; overflow: hidden;
    transition: transform 0.2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.card img { width: 100%; height: 180px; object-fit: cover; }
.card-content { padding: 1.5rem; }
.card-content p { font-size: 0.9rem; color: var(--gray); margin-top: 0.5rem; }

/* LOGIN PAGE */
.login-wrapper {
    display: flex; justify-content: center; align-items: center;
    height: 100vh; background-color: #f1f5f9;
}
.login-box {
    background: white; padding: 2.5rem;
    border-radius: 8px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    width: 100%; max-width: 350px; text-align: center;
}
.form-group { margin-bottom: 1rem; text-align: left; }
.form-group label { display: block; margin-bottom: 0.3rem; font-size: 0.85rem; color: var(--gray); }
.form-group input { width: 100%; padding: 0.6rem; border: 1px solid var(--border); border-radius: 4px; }
.error-msg { color: #ef4444; font-size: 0.8rem; margin-top: 1rem; display: none; }

/* BLOG */
.blog-post { background: white; padding: 1.5rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.blog-date { font-size: 0.8rem; color: var(--gray); margin-bottom: 0.5rem; }

/* ABOUT & CONTACT */
.about-section { display: flex; gap: 2rem; align-items: center; }
.about-section img { max-width: 300px; border-radius: 6px; }
.contact-banner { width: 100%; height: 200px; object-fit: cover; border-radius: 6px; margin-bottom: 2rem; }

/* FOOTER */
footer {
    text-align: center; padding: 2rem;
    background: white; border-top: 1px solid var(--border);
    margin-top: auto; font-size: 0.85rem; color: var(--gray);
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .about-section { flex-direction: column; }
    .about-section img { width: 100%; }
}