/* ===== CUSTOM STYLES ===== */

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

/* Selection color */
::selection {
    background-color: rgba(27, 67, 50, 0.2);
    color: #1B4332;
}

/* ===== NAVBAR ===== */
.nav-text-color {
    color: rgb(15, 23, 42);
}

.nav-link {
    color: rgb(55, 65, 81);
}

/* Scroll state */
header.scrolled .nav-text-color {
    color: rgb(15, 23, 42);
}

header.scrolled .nav-link {
    color: rgb(55, 65, 81);
}

header.scrolled {
    background-color: rgba(253, 251, 247, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

/* ===== MOBILE MENU ===== */
.mobile-link {
    color: rgb(15, 23, 42);
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

/* Menu button animation */
#menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
}

/* ===== HERO ANIMATIONS ===== */
@keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-medium {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-14px) rotate(-2deg); }
}

@keyframes float-fast {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-float-slow {
    animation: float-slow 8s ease-in-out infinite;
}

.animate-float-medium {
    animation: float-medium 6s ease-in-out infinite;
}

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

/* ===== SCROLL REVEAL ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.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; }

/* ===== SERVICE CARDS ===== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1B4332, #40916c);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ===== BACK TO TOP ===== */
#back-to-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

/* ===== FORM STYLES ===== */
input:focus,
select:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(27, 67, 50, 0.1);
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .animate-float-slow,
    .animate-float-medium,
    .animate-float-fast {
        animation: none;
    }

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

    #back-to-top {
        transition: none;
    }
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
    outline: 2px solid #1B4332;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== UTILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}