/* ============================================
   Karatbars International — Custom Styles
   ============================================ */

/* Base & Typography */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: #7B2D3B;
    color: #FFFAF5;
}

/* ============================================
   Navigation
   ============================================ */
#site-header {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

#site-header.scrolled {
    background: rgba(255, 250, 245, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(26, 26, 26, 0.08);
}

#site-header.scrolled #nav-bg {
    background: rgba(255, 250, 245, 0.9);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #7B2D3B;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu */
#mobile-menu {
    z-index: 50;
}

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

.mobile-nav-link {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

#mobile-menu.open .mobile-nav-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.25s; }

.menu-line {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
    width: 6px;
    transform: rotate(-45deg) translate(3px, -3px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-tagline {
    animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

.hero-headline {
    animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.35s forwards;
}

.hero-sub {
    animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.5s forwards;
}

.hero-cta {
    animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.65s forwards;
}

.hero-image-wrapper {
    animation: fadeInRight 1s cubic-bezier(0.4, 0, 0.2, 1) 0.5s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   Buttons
   ============================================ */
.cta-primary {
    position: relative;
    overflow: hidden;
}

.cta-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.cta-primary:hover::before {
    left: 100%;
}

/* ============================================
   Services
   ============================================ */
.service-card {
    cursor: pointer;
}

.service-card .service-icon {
    transition: transform 0.4s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

/* ============================================
   About Section
   ============================================ */
.about-img-container {
    box-shadow: 0 25px 60px -15px rgba(123, 45, 59, 0.2);
}

/* ============================================
   Approach Steps
   ============================================ */
.approach-step {
    position: relative;
}

.approach-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 2rem;
    right: -1.5rem;
    width: 1px;
    height: calc(100% - 2rem);
    background: linear-gradient(to bottom, rgba(123, 45, 59, 0.2), transparent);
}

@media (max-width: 1023px) {
    .approach-step:not(:last-child)::after {
        display: none;
    }
}

/* ============================================
   Form Inputs
   ============================================ */
.form-input {
    transition: all 0.3s ease;
}

.form-input:focus {
    border-color: #7B2D3B;
    box-shadow: 0 0 0 3px rgba(123, 45, 59, 0.08);
}

.form-input::placeholder {
    color: rgba(26, 26, 26, 0.3);
}

/* ============================================
   Reveal Animations
   ============================================ */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Staggered delays for children */
.reveal-up:nth-child(1) { transition-delay: 0s; }
.reveal-up:nth-child(2) { transition-delay: 0.05s; }
.reveal-up:nth-child(3) { transition-delay: 0.1s; }
.reveal-up:nth-child(4) { transition-delay: 0.15s; }
.reveal-up:nth-child(5) { transition-delay: 0.2s; }
.reveal-up:nth-child(6) { transition-delay: 0.25s; }

/* ============================================
   Parallax & Subtle Motion
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .hero-img-main img {
        transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .service-card {
        transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .about-img-container img {
        transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 1023px) {
    .hero-image-wrapper {
        margin-top: 2rem;
    }

    .hero-img-main {
        max-width: 500px;
    }

    .about-img-container {
        max-width: 500px;
    }
}

@media (max-width: 640px) {
    .hero-headline {
        font-size: 3rem;
    }

    .cta-primary,
    .cta-secondary {
        width: 100%;
        text-align: center;
    }

    .cta-secondary {
        border-bottom: none;
        padding: 0.75rem 0;
    }

    #mobile-menu {
        background: rgba(255, 250, 245, 0.98);
        backdrop-filter: blur(20px);
    }
}

/* ============================================
   Utility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal-up {
        opacity: 1;
        transform: none;
    }
}