/* ==================== 玄潮科技 - Custom Styles ==================== */

/* ----- Base ----- */
* {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ----- Hero Background Pattern ----- */
.hero-pattern {
    background-image:
        linear-gradient(rgba(154, 25, 30, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(154, 25, 30, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center center;
}

.hero-pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(154, 25, 30, 0.08) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* ----- Floating Animations ----- */
@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
}

@keyframes float-delayed {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
}

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

.animate-float-delayed {
    animation: float-delayed 10s ease-in-out infinite;
    animation-delay: 2s;
}

/* ----- Scroll Indicator Bounce ----- */
@keyframes bounce-slow {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(10px); opacity: 0.8; }
}

.animate-bounce-slow {
    animation: bounce-slow 2s ease-in-out infinite;
}

/* ----- Reveal Animations (Scroll-triggered) ----- */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translate(0, 0);
}

/* Apply reveal animation to elements that have inline animation-delay */
.reveal-up {
    animation: none;
}

.reveal-up[style*="animation-delay"] {
    transition-delay: var(--reveal-delay, 0s);
}

/* ----- Nav Link Active State ----- */
.nav-link.active {
    color: #9a191e;
    background-color: #fdf0ee;
}

.nav-link.active::after {
    content: '';
    display: block;
    width: 20px;
    height: 2px;
    background: #9a191e;
    margin: 2px auto 0;
    border-radius: 2px;
}

/* ----- Header Scroll Effect ----- */
#header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ----- Service Card Hover ----- */
.service-card:hover {
    transform: translateY(-4px);
}

/* ----- Advantage Card Hover ----- */
.advantage-card:hover {
    transform: translateY(-4px);
}

/* ----- Industry Card Hover ----- */
.industry-card:hover {
    transform: translateY(-3px);
}

/* ----- Stat Card Hover ----- */
.stat-card:hover {
    transform: translateY(-4px);
}

/* ----- Form Input Styles ----- */
.form-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(154, 25, 30, 0.15);
    border-color: #9a191e;
}

.form-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ----- Back to Top Button ----- */
#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ----- Custom Scrollbar ----- */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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

/* ----- Selection ----- */
::selection {
    background: rgba(154, 25, 30, 0.2);
    color: #171717;
}

/* ----- Mobile Menu Transition ----- */
#mobile-menu {
    transition: max-height 0.3s ease, opacity 0.3s ease;
    overflow: hidden;
}

#mobile-menu.show {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ----- Gradient Text ----- */
.text-gradient {
    background: linear-gradient(135deg, #e53935, #9a191e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ----- Responsive Adjustments ----- */
@media (max-width: 768px) {
    .service-card,
    .advantage-card,
    .stat-card,
    .industry-card {
        transform: none;
    }

    .reveal-left,
    .reveal-right {
        transform: translateY(30px);
    }

    .reveal-left.revealed,
    .reveal-right.revealed {
        transform: translate(0, 0);
    }
}

/* ----- Print Styles ----- */
@media print {
    header,
    #back-to-top,
    .animate-float-slow,
    .animate-float-delayed {
        display: none !important;
    }
}