/* ===== Custom Styles for Dr. Neilendu Kundu Website ===== */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f9fafb;
}
::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* Selection color */
::selection {
    background: #fce7eb;
    color: #7D2E45;
}

/* ===== Hero Section ===== */
#hero {
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,248,248,0.95) 0%, rgba(253,242,244,0.9) 50%, rgba(255,255,255,0.95) 100%);
    z-index: 0;
}

#hero > .relative {
    position: relative;
    z-index: 1;
}

/* ===== Service Cards ===== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #7D2E45, #b8254e);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover::after {
    transform: scaleX(1);
}

/* ===== Navbar scroll state ===== */
#navbar.scrolled {
    border-bottom-color: #f3f4f6;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* ===== Mobile menu animation ===== */
#mobile-menu {
    animation: slideDown 0.25s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Scroll reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ===== Button hover glow ===== */
.btn-glow:hover {
    box-shadow: 0 0 0 4px rgba(125, 46, 69, 0.15);
}

/* ===== Map hover ===== */
iframe:hover {
    filter: grayscale(0) contrast(1);
}

/* ===== Accessibility: focus visible ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #7D2E45;
    outline-offset: 2px;
}

/* ===== Responsive adjustments ===== */
@media (max-width: 768px) {
    #hero h1 {
        font-size: 2.5rem;
    }

    #hero h1 br {
        display: none;
    }

    .service-card {
        padding: 1.5rem;
    }
}

@media (max-width: 640px) {
    #hero h1 {
        font-size: 2rem;
    }
}