:root {
    --bg-primary: #000000;
    --bg-secondary: #161617;
    --bg-card: #1c1c1e;
    --bg-card-hover: #2c2c2e;
    --text-primary: #ffffff;      
    --text-secondary: #ffffff;    
    --text-inverse: #000000;
    --border-color: #333336;
    --apple-blue: #0071e3;        
    --transition-speed: 0.25s;
    --easing: cubic-bezier(0.25, 1, 0.5, 1);
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body.light-mode {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-card: #ffffff;
    --bg-card-hover: #fafafa;
    --text-primary: #1d1d1f;
    --text-secondary: #1d1d1f;
    --text-inverse: #ffffff;
    --border-color: #d2d2d7;
}

body.gray-mode {
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --bg-card: #3a3a3c;
    --bg-card-hover: #48484a;
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --text-inverse: #1c1c1e;
    --border-color: #48484a;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    letter-spacing: -0.015em;
}

body {
    font-family: var(--font-stack);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 17px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 88%;
    max-width: 1050px;
    margin: 0 auto;
    padding: 0;
}

h1, h2, .page-title-section h1, .hero h1, .product-category h2, .service-process-section h2 {
    color: var(--text-primary) !important;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 0.5em;
    text-align: center !important;
}

h1 { font-size: 3.2em; }
h2 { font-size: 2.3em; margin-bottom: 0.8em; }
h3 { font-size: 1.6em; font-weight: 600; text-align: left; margin-bottom: 0.4em; }
h4 { font-size: 1.3em; font-weight: 600; text-align: left; margin-bottom: 0.4em; }

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity var(--transition-speed) var(--easing);
}

a:hover { opacity: 0.75; }

img, video {
    max-width: 100%;
    height: auto !important;
    display: block;
}

header {
    background-color: rgba(22, 22, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

body.light-mode header { background-color: rgba(255, 255, 255, 0.85); }

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.25em;
    font-weight: 600;
    color: var(--text-primary) !important;
}

.navbar .nav-menu {
    list-style: none;
    display: flex;
}

.navbar .nav-menu li { margin-left: 32px; }

.navbar .nav-menu li a {
    color: var(--text-primary);
    opacity: 0.75;
    font-size: 0.95em;
    font-weight: 500;
    transition: opacity var(--transition-speed) var(--easing);
}

.navbar .nav-menu li a:hover,
.navbar .nav-menu li a.active { opacity: 1; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: background-color var(--transition-speed) var(--easing);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    left: 0;
    transition: transform var(--transition-speed) var(--easing), top var(--transition-speed) var(--easing), bottom var(--transition-speed) var(--easing);
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }

.nav-toggle.open .hamburger { background-color: transparent; }
.nav-toggle.open .hamburger::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open .hamburger::after { bottom: 0; transform: rotate(-45deg); }

#google_translate_element { margin-left: 32px; }
.goog-te-gadget-simple {
    background-color: rgba(255,255,255,0.06) !important;
    border: 1px solid var(--border-color) !important;
    padding: 5px 14px !important;
    border-radius: 20px !important;
}
.goog-te-gadget-simple span { color: var(--text-primary) !important; font-size: 13px !important; }
.goog-te-gadget-icon { display: none !important; }
.goog-te-banner-frame, .goog-te-balloon-frame { display: none !important; }
body { top: 0 !important; }

section {
    padding: 90px 0;
    border-bottom: 1px solid var(--border-color);
}
section:last-child { border-bottom: none; }

.page-title-section { padding: 50px 0 10px 0; }

.hero { padding: 110px 0; text-align: center; }
.hero p {
    font-size: 1.4em;
    max-width: 750px;
    margin: 0 auto 35px auto;
    color: var(--text-secondary) !important;
    text-align: center;
}

.video-showcase { background-color: var(--bg-secondary); }
.video-wrapper {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
}

.btn {
    display: inline-block;
    padding: 10px 28px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 0.9em;
    text-align: center;
    cursor: pointer;
    box-shadow: none !important;
    transform: none !important;
    transition: opacity var(--transition-speed) var(--easing);
}
.btn-primary { 
    background-color: var(--apple-blue);
    color: #ffffff !important; 
    border: none;
}
.btn-primary:hover { opacity: 0.9; }

.btn-secondary { 
    background-color: transparent; 
    color: var(--apple-blue) !important;
    border: none;
    padding: 8px 0;
}
.btn-secondary:hover { text-decoration: underline; }

.service-grid, .product-grid, .case-study-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
}

.service-item, .product-item, .case-study-item {
    background-color: var(--bg-card);
    padding: 32px;
    border-radius: 16px;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: stretch; 
    text-align: left;     
    box-shadow: none !important; 
    transform: none !important; 
    transition: background-color var(--transition-speed) var(--easing);
}
.service-item:hover, .product-item:hover, .case-study-item:hover {
    background-color: var(--bg-card-hover);
}

.product-image-placeholder, .service-image-placeholder, .case-image-placeholder {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 20px;
}

.service-item p, .product-item p, .case-study-item p {
    font-size: 1em;
    margin-bottom: 24px;
    color: var(--text-secondary) !important; 
    line-height: 1.6;
    text-align: left; 
}

.service-item .btn, .product-item .btn, .case-study-item .btn {
    margin: auto auto 0 auto !important; 
    align-self: center; 
}

.product-category h2 {
    margin-top: 50px;
    margin-bottom: 35px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.case-image-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.about-grid { 
    max-width: 750px; 
    margin: 0 auto; 
}
.about-text { 
    text-align: left !important; 
}
.about-text p { 
    margin-bottom: 24px; 
    font-size: 1.15em; 
    color: var(--text-primary) !important; 
    line-height: 1.65;
}
.about-text li {
    list-style: none;
    margin-bottom: 12px;
    font-size: 1.1em;
    color: var(--text-primary) !important; 
    padding-left: 15px;
    position: relative;
    text-align: left !important; 
}


.service-detailed-item {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 50px;
    margin-bottom: 70px;
    align-items: center;
}
.service-detailed-item:last-of-type { margin-bottom: 0; }
.service-detailed-image-placeholder { border-radius: 12px; }
.service-detailed-text { text-align: left; }
.service-detailed-text ul { list-style: none; margin-top: 18px; }
.service-detailed-text ul li {
    margin-bottom: 12px;
    color: var(--text-secondary) !important;
    position: relative;
    padding-left: 15px;
}
.service-detailed-text ul li::before { content: "•"; position: absolute; left: 0; color: var(--apple-blue); }

.service-process-section ol {
    list-style: none;
    max-width: 750px;
    margin: 0 auto;
}
.service-process-section ol li {
    margin-bottom: 24px;
    background-color: var(--bg-card);
    padding: 28px;
    border-radius: 14px;
    text-align: left; 
}
.service-process-section ol li::before { display: none; }
.service-process-section ol li strong {
    color: var(--text-primary);
    display: block;
    font-size: 1.15em;
    margin-bottom: 6px;
}

.faq-container { max-width: 750px; margin: 0 auto; }
.faq-item { margin-bottom: 14px; background-color: var(--bg-card); border-radius: 14px; overflow: hidden; }
.faq-question {
    background: none; border: none; color: var(--text-primary); padding: 22px;
    width: 100%; font-size: 1.05em; font-weight: 600; cursor: pointer;
    display: flex; justify-content: space-between; align-items: center;
}
.faq-answer { padding: 0 22px; color: var(--text-secondary) !important; max-height: 0; overflow: hidden; transition: max-height var(--transition-speed) var(--easing), padding var(--transition-speed) var(--easing); text-align: left; }
.faq-answer.active { max-height: 500px; padding-bottom: 22px; }

.contact-grid { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 60px; 
    align-items: start;
}

.contact-info {
    text-align: left;
}
.contact-info h2 {
    text-align: left !important; 
    margin-bottom: 30px;
}
.contact-info ul { list-style: none; }
.contact-info ul li { 
    margin-bottom: 24px; 
    color: var(--text-secondary) !important; 
    text-align: left !important; 
}
.contact-info ul li strong { 
    display: block; 
    color: var(--text-primary); 
    margin-bottom: 6px; 
    font-size: 1.1em; 
}

.social-media-links { margin-top: 35px; }
.social-icons-wrapper { display: flex; gap: 16px; justify-content: flex-start; } 
.social-icon img { width: 38px; height: 38px; border-radius: 50%; }

.contact-form-map-wrapper { width: 100%; }
.map-container h2 { text-align: left !important; margin-bottom: 20px; }
.map-placeholder { width: 100%; border-radius: 14px; }

.contact-form-container h2 {
    text-align: left !important;
    margin-bottom: 30px;
}
.contact-form { 
    width: 100%; 
    text-align: left; 
}
.contact-form .form-group { margin-bottom: 20px; }

.contact-form label { 
    display: block; 
    margin-bottom: 8px; 
    color: var(--text-primary); 
    font-size: 0.9em;
    font-weight: 500;
    text-align: left !important; 
}

.contact-form input[type="text"], 
.contact-form input[type="email"], 
.contact-form input[type="tel"], 
.contact-form textarea {
    width: 100%; 
    padding: 14px 16px; 
    background-color: var(--bg-secondary); 
    border: 1px solid var(--border-color);
    color: var(--text-primary); 
    border-radius: 10px; 
    font-family: var(--font-stack); 
    font-size: 0.95em;
    text-align: left !important; 
    transition: border-color var(--transition-speed) var(--easing), background-color var(--transition-speed) var(--easing);
}
.contact-form input[type="text"]:focus, 
.contact-form input[type="email"]:focus, 
.contact-form input[type="tel"]:focus, 
.contact-form textarea:focus { 
    outline: none; 
    border-color: var(--apple-blue); 
    background-color: var(--bg-card);
}
.contact-form textarea { resize: vertical; min-height: 140px; }

.contact-form button { 
    width: auto; 
    min-width: 150px; 
    padding: 12px 30px;
    margin-top: 10px; 
    display: inline-block;
    cursor: pointer;
}

.note { text-align: center; margin-top: 50px; color: var(--text-secondary) !important; font-size: 0.85em; }

footer {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    opacity: 0.7;
    text-align: center;
    padding: 55px 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.85em;
}
footer p { margin-bottom: 8px; text-align: center !important; }

@media (max-width: 991px) {
    .service-grid, .product-grid, .case-study-grid { grid-template-columns: repeat(2, 1fr); }
    .service-detailed-item { grid-template-columns: 1fr; gap: 35px; text-align: center; }
    .service-detailed-text { text-align: left; }
    .contact-grid { grid-template-columns: 1fr; gap: 50px; }
    .contact-info h2, .map-container h2, .contact-form-container h2 { text-align: center !important; }
    .social-icons-wrapper { justify-content: center; }
}

@media (max-width: 767px) {
    header .container { flex-wrap: wrap; }
    .nav-toggle { display: block; order: 2; }
    #google_translate_element { order: 3; margin-left: auto; margin-right: 10px; }
    .navbar { order: 4; width: 100%; }
    .navbar .nav-menu { display: flex; flex-direction: column; width: 100%; max-height: 0; overflow: hidden; transition: max-height 0.3s var(--easing); }
    .navbar .nav-menu.active { max-height: 500px; margin-top: 16px; }
    .navbar .nav-menu li { margin: 0; text-align: center; }
    .navbar .nav-menu li a { display: block; padding: 16px; border-bottom: 1px solid var(--border-color); }
    .service-grid, .product-grid, .case-study-grid, .case-image-comparison { grid-template-columns: 1fr; }
}