/* ========== BASE STYLES ========== */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    overflow-x: hidden;
}

/* ========== ANIMATIONS ========== */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float-delayed {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 5s ease-in-out infinite;
    animation-delay: 1s;
}

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* ========== SCROLL REVEAL ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.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; }

/* ========== NAVBAR ========== */
#navbar {
    background: transparent;
    backdrop-filter: none;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

#navbar.scrolled .font-serif {
    color: #1e293b !important;
}

/* ========== HERO ========== */
#hero {
    position: relative;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, #f8fafc, transparent);
    z-index: 1;
    pointer-events: none;
}

/* ========== SERVICE CARDS ========== */
.group:hover .group-hover\:bg-teal-700 svg {
    filter: brightness(10);
}

/* ========== BUTTONS ========== */
button, a[type="submit"] {
    cursor: pointer;
}

/* ========== FORM ========== */
input:focus, textarea:focus {
    outline: none;
}

/* ========== MOBILE MENU ========== */
#mobileMenu {
    animation: fadeIn 0.3s ease;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }

    .font-serif.text-5xl {
        font-size: 2.5rem;
    }

    .font-serif.text-4xl {
        font-size: 2rem;
    }
}

/* ========== SELECTION ========== */
::selection {
    background: #0d9488;
    color: #f0fdfa;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}