/* =========================================
   JD AI Solutions - Premium Design System
   ========================================= */

:root {
    /* Color Palette */
    --clr-black: #050505;
    --clr-deep-grey: #121212;
    --clr-charcoal: #1e1e1e;
    --clr-border: #2c2c2c;
    --clr-off-white: #f5f5f7;
    --clr-muted-text: #a1a1aa;
    --clr-accent-gold: #c6a87c;
    --clr-accent-gold-hover: #b5986c;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Playfair Display', serif;

    /* Spacing */
    --section-pad: 8rem 0;
    --container-width: 1200px;

    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--clr-black);
    color: var(--clr-off-white);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    font-weight: 500;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.text-center {
    text-align: center;
}

.section {
    padding: var(--section-pad);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent-gold);
    color: var(--clr-black);
}

.btn-primary:hover {
    background-color: var(--clr-accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(198, 168, 124, 0.15);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-border);
    color: var(--clr-off-white);
}

.btn-outline:hover {
    border-color: var(--clr-off-white);
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

/* Navbar & Language Selector */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: padding 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(5, 5, 5, 0.95);
}

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

.logo {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--clr-off-white);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--clr-muted-text);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-links a:hover {
    color: var(--clr-accent-gold);
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--clr-muted-text);
    cursor: pointer;
    transition: color 0.3s ease;
}

.lang-selector:hover {
    color: var(--clr-off-white);
}

.lang-dropdown {
    background: transparent;
    border: none;
    color: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    text-transform: uppercase;
    appearance: none;
    -webkit-appearance: none;
    padding-right: 2px;
}

.lang-dropdown option {
    background-color: var(--clr-charcoal);
    color: var(--clr-off-white);
}

.nav-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-bg-accent {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(198, 168, 124, 0.08) 0%, rgba(5, 5, 5, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.headline {
    font-size: clamp(3rem, 6vw, 5.5rem);
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--clr-off-white);
}

.accent-text {
    color: var(--clr-accent-gold);
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}

.subheadline {
    font-size: 1.25rem;
    color: var(--clr-muted-text);
    margin-bottom: 2.5rem;
    max-width: 600px;
    font-weight: 300;
}

/* Problem Section */
.problem-section {
    background-color: var(--clr-deep-grey);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.problem-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.problem-text {
    font-size: 1.5rem;
    color: var(--clr-muted-text);
    line-height: 1.5;
}

/* Solution Section */
.solution-section {
    padding: 10rem 0;
    position: relative;
}

.solution-box {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 4rem;
    border: 1px solid var(--clr-border);
    background: linear-gradient(180deg, rgba(30, 30, 30, 0.4) 0%, rgba(18, 18, 18, 0.2) 100%);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.solution-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--clr-accent-gold), transparent);
}

.solution-statement {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: 2rem;
    color: var(--clr-off-white);
}

.solution-brand {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--clr-accent-gold);
}

/* Services */
.services-section {
    background-color: var(--clr-black);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--clr-charcoal);
    padding: 3rem 2.5rem;
    border-radius: 4px;
    border: 1px solid var(--clr-border);
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(198, 168, 124, 0.3);
    background-color: #222;
}

.service-icon {
    font-size: 2.5rem;
    color: var(--clr-accent-gold);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--clr-off-white);
}

.service-card p {
    color: var(--clr-muted-text);
    font-size: 0.95rem;
}

/* About Section */
.about-section {
    background-color: var(--clr-deep-grey);
    padding: 8rem 0;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    width: 100%;
}

.about-image {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: contain;
    object-position: center;
    border-radius: 8px;
    filter: grayscale(10%) contrast(1.1);
    z-index: 2;
    position: relative;
    display: block;
}

.founder-name {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--clr-accent-gold);
    margin-bottom: 1.5rem;
}

.founder-bio {
    color: var(--clr-muted-text);
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
}

/* Process Section */
.process-section {
    background-color: var(--clr-black);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.process-step {
    position: relative;
    padding-top: 2rem;
    border-top: 1px solid var(--clr-border);
}

.step-number {
    position: absolute;
    top: -1.75rem;
    left: 0;
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--clr-accent-gold);
    background: var(--clr-black);
    padding-right: 1rem;
    line-height: 1;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--clr-muted-text);
    font-size: 0.95rem;
}

/* Contact Form Section */
.form-section {
    background-color: var(--clr-deep-grey);
    border-top: 1px solid var(--clr-border);
    position: relative;
}

.form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--clr-charcoal);
    padding: 4rem;
    border-radius: 8px;
    border: 1px solid var(--clr-border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.form-subtitle {
    color: var(--clr-muted-text);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: left;
}

.form-group label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-muted-text);
    font-weight: 500;
}

.form-input {
    background-color: var(--clr-deep-grey);
    border: 1px solid var(--clr-border);
    color: var(--clr-off-white);
    padding: 1rem;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.form-input:focus {
    outline: none;
    border-color: var(--clr-accent-gold);
    box-shadow: 0 0 0 1px var(--clr-accent-gold);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23a1a1aa%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 0.6rem auto;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* CTA Section */
.cta-section {
    background-color: var(--clr-black);
    position: relative;
    overflow: hidden;
    padding: 10rem 0;
    border-top: 1px solid var(--clr-border);
}

.cta-bg-accent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(198, 168, 124, 0.05) 0%, rgba(30, 30, 30, 0) 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-headline {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    margin-bottom: 2.5rem;
}

/* Footer */
.footer {
    background-color: var(--clr-black);
    padding: 3rem 0;
    border-top: 1px solid var(--clr-border);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-brand {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--clr-off-white);
}

.footer-contact a {
    color: var(--clr-muted-text);
}

.footer-contact a:hover {
    color: var(--clr-accent-gold);
}

.footer-copy {
    color: #666;
    font-size: 0.85rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

/* Full Responsive Design */
@media (max-width: 1024px) {
    .headline {
        font-size: 4rem;
    }

    .about-container {
        gap: 3rem;
    }

    .form-wrapper {
        padding: 3rem 2rem;
    }
}

@media (max-width: 900px) {
    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-image-wrapper {
        margin-bottom: 3rem;
    }

    .solution-statement {
        font-size: 2rem;
    }

    .cta-headline {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    /* Hide heavy links, but keep lang selector and CTA */
    .section {
        padding: 5rem 0;
    }

    .headline {
        font-size: 3rem;
    }

    .hero {
        padding-top: 6rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-wrapper {
        padding: 2.5rem 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
        margin-top: 3rem;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .headline {
        font-size: 2.5rem;
    }

    .subheadline {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .nav-btn {
        display: none;
    }

    /* Can hide on very small screens since Hero has main CTA */
    .solution-box {
        padding: 3rem 1.5rem;
    }

    .solution-statement {
        font-size: 1.5rem;
    }

    .about-image-wrapper {
        max-width: 100%;
    }

    .cta-headline {
        font-size: 2.2rem;
    }
}