:root {
    --bg-white: #ffffff;
    --bg-gray: #fbfbfd;
    --text-black: #1d1d1f;
    --text-gray: #86868b;
    --header-bg: rgba(255, 255, 255, 0.72);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="dark"] {
    --bg-white: #000000;
    --bg-gray: #111111;
    --text-black: #f5f5f7;
    --text-gray: #a1a1a6;
    --header-bg: rgba(0, 0, 0, 0.72);
}

[data-theme="dark"] .apple-section {
    border-bottom: 12px solid #000;
}
[data-theme="dark"] .apple-section.gray-bg {
    border-bottom: 12px solid #000;
}

[data-theme="dark"] .modal-close {
    background: rgba(0,0,0,0.8) !important;
    color: #2997ff !important;
}
[data-theme="dark"] .modal-close:hover {
    background: rgba(40,40,40,0.8) !important;
    color: #4eb5ff !important;
}
[data-theme="dark"] .fullscreen-modal.gray-bg .modal-close {
    background: rgba(17,17,17,0.8) !important;
}

[data-theme="dark"] .apple-section.bg-black {
    background-color: #1c1c1e !important;
}

[data-theme="dark"] .carousel-btn {
    background: rgba(255,255,255,0.1) !important;
    color: #fff !important;
}
[data-theme="dark"] .carousel-btn:hover {
    background: rgba(255,255,255,0.2) !important;
}

/* Replaced old learn-more dark mode with new button architecture handled below */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-white);
    color: var(--text-black);
    line-height: 1.4;
    transition: background-color 0.3s, color 0.3s;
}

/* Header */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 48px;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(125, 125, 125, 0.15);
}

.navbar-container {
    max-width: 1024px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.logo {
    color: var(--text-black);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-black);
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 1;
}

/* Header Controls Wrapper */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-black);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    transition: background 0.3s;
}
.theme-toggle:hover {
    background: rgba(125,125,125,0.15);
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }

[data-theme="dark"] .theme-toggle .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle .moon-icon { display: none; }


.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--text-black);
    transition: transform 0.3s, opacity 0.3s;
    transform-origin: center;
}

/* Apple Block Sections */
.apple-section {
    position: relative;
    width: 100%;
    min-height: 80vh;
    padding-top: 48px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    text-align: center;
    overflow: hidden;
    background-color: var(--bg-white);
    border-bottom: 12px solid var(--bg-gray);
}

.apple-section.gray-bg {
    background-color: var(--bg-gray);
    border-bottom: 12px solid var(--bg-white);
}

/* Forcing Black Background */
.apple-section.bg-black {
    background-color: #000000;
    color: #ffffff;
    border-bottom: none;
}
.apple-section.bg-black .section-hero h2 {
    color: #ffffff;
}

.apple-section.has-bg {
    justify-content: center;
}

.bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.text-light {
    color: white;
}

.text-light p {
    color: rgba(255,255,255,0.8);
}

.section-hero {
    position: relative;
    z-index: 1;
    margin-top: 8vh;
    padding: 0 2rem;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none; /* Let clicks pass to section */
}

/* Allow interaction with specifically buttons inside the hero */
.action-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    pointer-events: auto; 
}

.section-hero.compact {
    margin-top: 8vh;
    margin-bottom: 2rem;
}

.apple-section h2 {
    font-size: 4.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    margin-bottom: 0.5rem;
}

.apple-section p {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-gray);
    letter-spacing: -0.01em;
}

/* Interactive Blocks */
.interactive-section {
    cursor: pointer;
    transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.interactive-section:hover {
    transform: scale(1.02);
}

/* Apple Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    font-size: 1.1rem;
    padding: 0.8rem 1.8rem;
    border-radius: 40px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: transform 0.3s, background-color 0.3s, opacity 0.3s;
    text-decoration: none;
}
.btn:hover {
    transform: scale(1.03);
}
.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background-color: #0071e3;
    color: #ffffff;
}
.btn-primary:hover {
    background-color: #0077ed;
}

.btn-secondary {
    background-color: transparent;
    color: #0071e3;
    border: 1px solid #0071e3;
}
.btn-secondary:hover {
    background-color: #0071e3;
    color: #ffffff;
}

[data-theme="dark"] .btn-secondary {
    color: #2997ff;
    border: 1px solid #2997ff;
}
[data-theme="dark"] .btn-secondary:hover {
    background-color: #2997ff;
    color: #000000;
}

/* Section Covars (New UI element) */
.section-cover {
    margin-top: 4rem;
    width: 100%;
    max-width: 1000px;
    padding: 0 2rem;
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: flex-end; /* Push to bottom */
}

.section-cover img {
    width: 100%;
    height: auto;
    max-height: 50vh;
    object-fit: cover;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -15px 40px rgba(0,0,0,0.15);
}

/* Static Sections Image */
.static-img-container {
    margin-top: 4rem;
    width: 100%;
    max-width: 1100px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem 4rem;
}

.static-img-container img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 28px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

/* Carousel Section */
.carousel-section {
    min-height: 70vh;
}

.carousel-container {
    width: 100%;
    position: relative;
    padding-bottom: 4rem;
    margin-top: 2rem;
}

.carousel-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -ms-overflow-style: none; /* IE and Edge */
    scrollbar-width: none; /* Firefox */
    padding: 0 calc(50vw - 475px); /* Center 950px slide. */
    gap: 24px;
}

@media (max-width: 900px) {
    .carousel-track {
        padding: 0 5vw;
    }
}

.carousel-track::-webkit-scrollbar {
    display: none;
}

.carousel-slide {
    flex: 0 0 calc(100% - 10%);
    max-width: 950px;
    scroll-snap-align: center;
    position: relative;
    border-radius: 28px;
    overflow: hidden;
    aspect-ratio: 4/3;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.interactive-slide {
    cursor: pointer;
}
.interactive-slide:hover {
    transform: scale(1.02);
}

.carousel-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.carousel-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    color: #fff;
    transition: background 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: rgba(255,255,255,0.3);
}

/* Dots inside black block */
.carousel-dots {
    display: flex;
    gap: 10px;
}
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: background 0.3s;
}
.dot.active {
    background: #ffffff;
}

/* Footer (Apple Style) */
.apple-footer {
    background: var(--bg-gray);
    padding: 3rem 2rem;
    font-size: 12px;
    color: var(--text-gray);
}

.footer-content {
    max-width: 1024px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(125,125,125,0.15);
}

.footer-col h4 {
    font-weight: 600;
    color: var(--text-black);
    margin-bottom: 0.75rem;
    font-size: 13px;
}

.footer-col p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.phone-link {
    color: #0071e3;
    text-decoration: none;
    font-size: 14px;
}

.phone-link:hover {
    text-decoration: underline;
}

.footer-bottom {
    max-width: 1024px;
    margin: 1rem auto 0;
}

/* Fullscreen Modals (New Page transition) */
.fullscreen-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 2000;
    background-color: var(--bg-white);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    
    /* Reveal Animation: Slide + Fade */
    opacity: 0;
    visibility: hidden;
    transform: scale(0.97) translateY(40px);
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.fullscreen-modal.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

.fullscreen-modal.gray-bg {
    background-color: var(--bg-gray);
}

.modal-close {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.8);
    backdrop-filter: saturate(180%) blur(20px);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    z-index: 10;
    color: #0071e3;
    transition: color 0.3s;
}
.modal-close:hover {
    color: #0077ed;
}

.fullscreen-modal.gray-bg .modal-close {
    background: rgba(251,251,253,0.8);
}

.modal-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
}

.modal-title {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 4rem;
    text-align: center;
}

/* Detailed Case Studies */
.project-hero-img {
    width: 100%;
    max-height: 60vh;
    object-fit: cover;
    border-radius: 28px;
    margin-bottom: 3rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.case-study-body {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.case-study-body h3 {
    font-size: 1.8rem;
    margin: 3rem 0 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}
.case-study-body h3:first-child {
    margin-top: 0;
}

.case-study-body p {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.project-img {
    width: 100%;
    height: auto;
    max-height: 85vh;
    object-fit: cover;
    border-radius: 20px;
}

.results-list {
    list-style-type: none;
    padding: 0;
}

.results-list li {
    font-size: 1.25rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(125,125,125,0.2);
    color: var(--text-black);
    position: relative;
    padding-left: 2rem;
}

.results-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #0071e3;
    font-weight: bold;
}

/* Modals layout grid 3 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.product-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.prod-img {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    border-radius: 18px;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.product-col h3 {
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.sub-desc {
    font-size: 1rem !important;
    margin-top: 0.5rem;
    color: var(--text-gray) !important;
}

/* Form Styles */
.form-content {
    max-width: 600px;
    text-align: center;
}
.form-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
}
.form-subtitle span {
    color: var(--text-black);
    font-weight: 600;
}
.apple-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    text-align: left;
}
.form-group input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    border-radius: 14px;
    border: 1px solid rgba(125,125,125,0.3);
    background-color: rgba(125,125,125,0.05);
    color: var(--text-black);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}
.form-group input:focus {
    border-color: #0071e3;
    background-color: transparent;
    box-shadow: 0 0 0 4px rgba(0,113,227,0.15);
}
[data-theme="dark"] .form-group input {
    background-color: rgba(255,255,255,0.05);
}

.checkbox-group {
    margin-top: 0.5rem;
}
.custom-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-gray);
}
.custom-checkbox input {
    display: none;
}
.checkmark {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 1px solid rgba(125,125,125,0.5);
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    background: transparent;
    flex-shrink: 0;
}
.checkmark svg {
    width: 16px;
    height: 16px;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.2s;
}
.custom-checkbox input:checked ~ .checkmark {
    background-color: #0071e3;
    border-color: #0071e3;
}
.custom-checkbox input:checked ~ .checkmark svg {
    opacity: 1;
    transform: scale(1);
    color: white;
}
.checkbox-text a {
    color: #0071e3;
    text-decoration: none;
}
.checkbox-text a:hover {
    text-decoration: underline;
}
.submit-btn {
    width: 100%;
    padding: 1.25rem;
    font-size: 1.2rem;
    margin-top: 1rem;
    justify-content: center;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.social-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}
.social-links a:hover {
    color: #0071e3;
}

.file-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px dashed rgba(125,125,125,0.4);
    background-color: rgba(125,125,125,0.02);
    color: var(--text-gray);
    cursor: pointer;
    transition: background-color 0.3s, border-color 0.3s;
}
.file-btn:hover {
    background-color: rgba(0,113,227,0.05);
    border-color: #0071e3;
    color: #0071e3;
}
.file-btn svg {
    flex-shrink: 0;
}
#file-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 1rem;
}

/* Typography Modal for simple detailed text */
.text-modal-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}
.text-modal-content p {
    font-size: 1.5rem;
    line-height: 1.7;
    color: var(--text-gray);
    margin-top: 1rem;
}
.text-modal-content p b {
    color: var(--text-black);
}

/* Split Section (About Us) */
.split-section {
    padding: 6rem 2rem;
    display: flex;
    justify-content: center;
}
.split-content {
    display: flex;
    gap: 4rem;
    align-items: center;
}
.text-block {
    flex: 1;
}
.image-block {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.achiev-img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.service-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-gray);
    margin-top: 1.5rem;
    text-align: left;
}
.service-list {
    margin-top: 1.5rem;
    padding-left: 1.5rem;
    font-size: 1.05rem;
    color: var(--text-gray);
    line-height: 1.7;
}
.service-list b {
    color: var(--text-black);
}

/* Responsive - Extreme Density for Mobile */
@media (max-width: 768px) {
    /* Compact Apple spacing rule: fit approx 2 blocks */
    .apple-section {
        min-height: 50vh;
        padding-top: 7rem;
        padding-bottom: 1rem;
    }
    
    .section-hero {
        margin-top: 0;
        margin-bottom: 1rem;
    }

    .apple-section h2 {
        font-size: 2.75rem; /* much denser */
    }
    .apple-section p {
        font-size: 1.15rem;
    }
    
    .action-buttons {
        flex-direction: row;
        gap: 0.5rem;
        width: 100%;
    }
    
    .btn {
        flex: 1;
        min-width: 0;
        justify-content: center;
        font-size: 0.9rem;
        padding: 0.9rem 0.25rem;
        white-space: nowrap;
    }

    .section-cover {
        margin-top: 2rem;
    }
    .section-cover img {
        max-height: 30vh;
    }
    
    .split-content {
        flex-direction: column;
        gap: 2rem;
        text-align: left;
    }
    .image-block {
        align-items: flex-start;
    }
    
    .static-img-container {
        margin-top: 2rem;
        padding-bottom: 2rem;
    }
    .static-img-container img {
        max-height: 30vh;
    }
    
    .carousel-section {
        min-height: 60vh;
        padding-top: 5rem;
    }
    .carousel-container {
        padding-bottom: 1rem;
    }
    
    /* Smooth Burger Menu */
    .nav-links {
        position: fixed;
        top: 48px;
        left: 0;
        width: 100%;
        height: calc(100vh - 48px);
        background: var(--header-bg);
        backdrop-filter: saturate(180%) blur(20px);
        flex-direction: column;
        align-items: center;
        padding-top: 4rem;
        gap: 2rem;
        
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    .nav-links.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .nav-links a {
        font-size: 16px;
        font-weight: 500;
        opacity: 1;
        color: var(--text-black);
    }
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .grid-3 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .modal-title {
        font-size: 2.5rem;
        margin-bottom: 2rem;
    }
    .case-study-body h3 {
        font-size: 1.5rem;
    }
    .case-study-body p {
        font-size: 1.1rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
    .carousel-slide {
        aspect-ratio: 4/3;
    }
}