/* ---------- General Styles ---------- */
body {
    background: #fff;
    font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
    margin: 0;
    padding: 0;
}
h2, h4, h5 {
    font-weight: 600;
    color: #222;
}
section {
    margin-bottom: 40px;
}

/* ---------- Project Filter Buttons ---------- */
.filter-btn {
    min-width: 130px;
    border-radius: 8px !important;
    font-weight: 500;
    padding: 8px 18px !important;
    font-size: 1rem !important;
    letter-spacing: 0.5px;
    margin-bottom: 5px !important;
    transition: background 0.2s, color 0.2s;
}

.filter-btn.active, .filter-btn:focus, .filter-btn:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transform: translateY(-1px) scale(1.03);
    outline: none !important;
}
/* ---------- Hero Section ---------- */
.hero {
    background: #232323;
    text-align: center;
    padding: 56px 20px 48px;
}
.hero h1 {
    color: #fff;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}
.hero p {
    font-size: 1.1rem;
    color: #d7d7d7;
    font-weight: 500;
    margin-bottom: 20px;
}
.hero .btn {
    background-color: #007bff;
    color: #fff;
    padding: 11px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 7px;
    text-decoration: none;
}
.hero .btn:hover {
    background-color: #0056b3;
}

/* ---------- Profile Section ---------- */
.profile {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-top: -40px;
    padding: 40px 28px;
    background: #fff;
    box-shadow: 0 6px 36px rgba(26,36,57,0.10);
    border-radius: 18px;
}
.profile-img {
    max-width: 180px;
    width: 100%;
    height: auto;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.profile h2 {
    margin-bottom: 13px;
}
.profile p {
    color: #333;
    font-size: 1.05rem;
    margin: 0;
}
@media (max-width: 768px) {
    .profile {
        flex-direction: column;
        text-align: center;
        padding: 25px 14px;
    }
    .profile-img {
        max-width: 140px;
    }
}

/* ---------- Project Filter Buttons ---------- */
.filter-btn {
    min-width: 130px;
    border-radius: 8px !important;
    font-weight: 500;
    padding: 8px 18px !important;
    font-size: 1rem !important;
    letter-spacing: 0.5px;
    margin-bottom: 5px !important;
    transition: background 0.2s, color 0.2s;
}

.filter-btn.active, .filter-btn:focus, .filter-btn:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transform: translateY(-1px) scale(1.03);
    outline: none !important;
}


/* ---------- Project Cards ---------- */
.project-card {
    transition: box-shadow 0.2s, transform 0.1s;
    display: flex;
}

.project-card .card {
    border-radius: 14px;
    box-shadow: 0 4px 18px rgba(44, 62, 80, 0.11);
    border: none;
    cursor: pointer;
    transition: box-shadow 0.18s, transform 0.11s;
}

.project-card .card:hover {
    box-shadow: 0 8px 28px rgba(44, 62, 80, 0.17);
    transform: translateY(-3px) scale(1.02);
}

.project-card .card-title {
    font-size: 1.17rem;
    font-weight: 600;
    color: #264653;
    margin-bottom: 7px;
}

.project-card .card-text {
    font-size: 1rem;
    color: #444444;
    margin-bottom: 11px;
}

.project-card .btn-dark.btn-sm {
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 7px;
    padding: 6px 15px;
}

.border-warning {
    border: 2px solid #fbc02d !important;
}

/* ---------- Skills Badge Styles ---------- */
#skills .badge {
    font-size: 1rem;
    font-weight: 500;
    border-radius: 7px;
    padding: 10px 18px;
    letter-spacing: 0.04em;
    margin: 4px;
    box-shadow: 0 2px 8px rgba(44, 62, 80, 0.06);
}

.bg-warning.text-dark { color: #846100 !important; }

.bg-primary  { background: #2979ff !important; }
.bg-success  { background: #5cb85c !important; }
.bg-warning  { background: #ffd600 !important; }
.bg-info     { background: #5cd6ff !important; }
.bg-dark     { background: #222 !important; }
.bg-secondary{ background: #9ba5b0 !important; }
.bg-danger   { background: #d32f2f !important; }

/* ---------- Contact Buttons ---------- */
#contact .btn {
    min-width: 110px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 12px;
    margin: 0 7px 10px 7px;
    padding: 10px 18px;
    transition: filter 0.15s;
}

#contact .btn:hover {
    filter: brightness(0.93);
}

/* ---------- Footer ---------- */
footer {
    background: #111;
    color: #fff;
    padding: 18px 0 6px 0;
    letter-spacing: 0.04em;
    font-size: 1.07rem;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
    box-shadow: 0 -1px 10px rgba(44, 62, 80, 0.10);
    margin-top: 36px;
}

/* ---------- Responsive Tweaks ---------- */
@media (max-width: 991.98px) {
    .project-card { margin-bottom: 18px; }
    .project-card .card { margin-bottom: 0; }
}
@media (max-width: 767.98px) {
    .project-card .card-title {
        font-size: 1.08rem;
    }
    #skills .badge { font-size: 0.98rem; }
}
/* Contact Form Dark Mode Fix */
@media (prefers-color-scheme: dark) {
  #contact {
    background-color: #1e1e1e; /* Dark background */
    color: #ffffff; /* White text */
  }

  #contact .form-label {
    color: #ffffff; /* Label text color */
  }

  #contact .form-control {
    background-color: #2b2b2b; /* Input background */
    color: #ffffff; /* Input text color */
    border: 1px solid #555; /* Border color */
  }

  #contact .form-control::placeholder {
    color: #aaaaaa; /* Placeholder text */
  }

  #contact .btn-primary {
    background-color: #007bff; /* Keep button visible */
    border-color: #007bff;
  }

  #contact .btn-primary:hover {
    background-color: #0056b3;
    border-color: #004085;
  }
}

/* ---- Certificates ---- */
:root {
  --accent: #57b894;
  --bg-card: rgba(255,255,255,0.05);
  --text-light: #e8f0fa;
  --text-muted: #a9b7d0;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0,0,0,0.3);
  --transition: all 0.3s ease;
}

.cert-section { background: linear-gradient(135deg, #0f172a, #041e34); color: var(--text-light); padding: 60px 20px; display: flex; justify-content: center; }
.cert-container { max-width: 900px; width: 100%; }
.cert-heading {
  text-align: center; font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 2rem;
  background: linear-gradient(90deg, #fff, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.cert-card {
  display: flex; gap: 20px; background: var(--bg-card); border-radius: var(--radius);
  box-shadow: var(--shadow); backdrop-filter: blur(10px); padding: 24px; align-items: center; transition: var(--transition);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.45); }
.cert-left .cert-icon { background: rgba(255,255,255,0.05); border-radius: 50%; width: 70px; height: 70px; display: flex; align-items: center; justify-content: center; }
.cert-icon svg { width: 36px; height: 36px; color: var(--accent); }
.cert-right { flex: 1; }
.issuer { font-weight: 600; color: #fff; font-size: 1rem; }
.verified { background: rgba(87,184,148,0.15); color: var(--accent); padding: 4px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 700; margin-left: 8px; border: 1px solid rgba(87,184,148,0.25); }
.course { margin: 8px 0 12px; font-size: 1.2rem; font-weight: 600; }
.meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.tag { font-size: 0.85rem; padding: 6px 12px; border-radius: 999px; font-weight: 600; letter-spacing: 0.02em; background: rgba(255,255,255,0.08); color: var(--text-muted); border: 1px solid rgba(255,255,255,0.06); }
.tag.python { color: #ffd166; } .tag.data { color: #06d6a0; } .tag.edx { color: #118ab2; }
.actions { margin-top: 12px; }
.btn.view-btn { display: inline-block; padding: 10px 22px; font-weight: 700; border-radius: var(--radius); text-decoration: none; transition: var(--transition); font-size: 0.95rem; background: var(--accent); color: #081b14; box-shadow: 0 4px 16px rgba(87,184,148,0.35); }
.btn.view-btn:hover { background: #62d2a2; transform: translateY(-2px); }
@media (max-width: 700px) {
  .cert-card { flex-direction: column; text-align: center; }
  .cert-left .cert-icon { margin-bottom: 12px; }
}