/* ============================================================
   Nasima Akter — Portfolio
   Custom styles on top of Tailwind (CDN)
   ============================================================ */

/* ---------- Reusable component classes ---------- */

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #4749eb;
    background: #eef4ff;
    border: 1px solid #dfe9ff;
    padding: 0.35rem 1rem;
    border-radius: 9999px;
}

.section-title {
    font-family: 'Sora', sans-serif;
    font-weight: 800;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.2;
    color: #0f1222;
    margin-top: 1rem;
}

.service-card {
    background: #ffffff;
    border: 1px solid #f1f5f9;
    border-radius: 1.5rem;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -15px rgba(71, 73, 235, 0.15);
    border-color: #c5d6ff;
}

.service-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 1rem;
    background: #eef4ff;
    color: #4749eb;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, color 0.3s ease;
}
.service-card:hover .service-icon {
    background: #4749eb;
    color: #ffffff;
}

.skill-chip {
    font-size: 0.85rem;
    font-weight: 500;
    color: #334155;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    transition: all 0.25s ease;
}
.skill-chip:hover {
    border-color: #4749eb;
    color: #4749eb;
    background: #eef4ff;
}

.portfolio-card {
    background: #ffffff;
    border: 1px solid #f1f5f9;
    border-radius: 1.5rem;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -15px rgba(15, 18, 34, 0.15);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #ffffff;
    border: 1px solid #f1f5f9;
    border-radius: 1.25rem;
    padding: 1.25rem 1.5rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.contact-card:hover {
    border-color: #c5d6ff;
    box-shadow: 0 15px 30px -12px rgba(71, 73, 235, 0.12);
}

.contact-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    border-radius: 0.9rem;
    background: #eef4ff;
    color: #4749eb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #0f1222;
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    font-size: 0.925rem;
    color: #0f1222;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 0.9rem;
    padding: 0.8rem 1.1rem;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.form-input::placeholder { color: #94a3b8; }
.form-input:focus {
    border-color: #4749eb;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(71, 73, 235, 0.1);
}

/* ---------- Hero background ---------- */

.hero-bg {
    background:
        radial-gradient(ellipse 60% 50% at 85% 10%, rgba(94, 111, 247, 0.12), transparent 60%),
        radial-gradient(ellipse 50% 40% at 10% 90%, rgba(94, 111, 247, 0.08), transparent 60%),
        #ffffff;
}

/* ---------- Navbar scrolled state ---------- */

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px -8px rgba(15, 18, 34, 0.1);
}

.nav-link.active { color: #4749eb; }

/* ---------- Typing cursor ---------- */

.typed-cursor {
    color: #4749eb;
    font-weight: 400;
    animation: blink 0.9s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Floating hero elements ---------- */

.float-anim        { animation: float 6s ease-in-out infinite; }
.float-anim-slow   { animation: float 5s ease-in-out infinite 0.5s; }
.float-anim-slower { animation: float 7s ease-in-out infinite 1s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-14px); }
}

/* ---------- Scroll reveal ---------- */

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }

/* ---------- Skill bars ---------- */

.skill-bar { transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1); }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .float-anim, .float-anim-slow, .float-anim-slower { animation: none; }
    .typed-cursor { animation: none; }
    html { scroll-behavior: auto; }
}