/* ================================
   COMPONENT STYLES - BLUESTONE AI
   ================================ */

/* ================================
   NAVIGATION
   ================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-section);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
    min-height: 72px;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--h4-size);
    font-weight: var(--weight-bold);
    color: var(--deep-black);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    color: var(--medium-gray);
    text-decoration: none;
    font-weight: var(--weight-medium);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-green);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-green);
    transition: width var(--transition-normal);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--deep-black);
    transition: all var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ================================
   HERO SECTION
   ================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--rich-black) 0%, var(--dark-gray) 100%);
    color: var(--pure-white);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xxl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    color: var(--pure-white);
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--pure-white) 0%, var(--primary-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--body-large);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.brain-visualization {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.brain-svg {
    width: 100%;
    height: auto;
}

.neural-network .node {
    animation: pulse 2s ease-in-out infinite;
}

.neural-network .connection {
    animation: flow 3s ease-in-out infinite;
}

/* ================================
   FEATURES SECTION
   ================================ */

.features {
    padding: var(--space-xxxl) 0;
    background-color: var(--pure-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xxl);
}

.feature-card {
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
    color: var(--deep-black);
}

.feature-card p {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* ================================
   HOW IT WORKS SECTION
   ================================ */

.how-it-works {
    padding: var(--space-xxxl) 0;
    background: linear-gradient(135deg, #f8fffe 0%, #f0f9ff 100%);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xxl);
    position: relative;
}

.step {
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    position: relative;
    transition: transform var(--transition-normal);
}

.step:hover {
    transform: translateY(-4px);
}

.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--bright-green) 100%);
    color: var(--pure-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--h4-size);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-md);
}

.step-content h3 {
    margin-bottom: var(--space-sm);
    color: var(--deep-black);
}

.step-content ul {
    list-style: none;
    padding: 0;
}

.step-content li {
    color: var(--medium-gray);
    margin-bottom: var(--space-xs);
    position: relative;
    padding-left: var(--space-md);
}

.step-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: var(--weight-bold);
}

.step-connector {
    display: none;
}

/* ================================
   TESTIMONIALS SECTION
   ================================ */

.testimonials {
    padding: var(--space-xxxl) 0;
    background-color: var(--rich-black);
    color: var(--pure-white);
}

.testimonials .section-header h2 {
    color: var(--pure-white);
}

.testimonials .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.testimonials-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-card {
    background-color: var(--dark-gray);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin: var(--space-sm);
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--transition-slow);
    position: absolute;
    width: calc(100% - 32px);
}

.testimonial-card.active {
    opacity: 1;
    transform: translateX(0);
    position: relative;
}

.testimonial-content p {
    font-size: var(--body-large);
    color: var(--pure-white);
    font-style: italic;
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-green);
}

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

.author-info h4 {
    color: var(--pure-white);
    margin-bottom: 4px;
}

.author-info p {
    color: var(--primary-green);
    font-size: var(--body-small);
    margin: 0;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.carousel-btn {
    background-color: var(--dark-gray);
    color: var(--pure-white);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 20px;
}

.carousel-btn:hover {
    background-color: var(--primary-green);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: var(--space-xs);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background-color: var(--medium-gray);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dot.active {
    background-color: var(--primary-green);
}

/* ================================
   WAITLIST SECTION
   ================================ */

.waitlist {
    padding: var(--space-xxxl) 0;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--teal) 100%);
    color: var(--pure-white);
}

.waitlist-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.waitlist h2 {
    color: var(--pure-white);
    margin-bottom: var(--space-md);
}

.waitlist p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--body-large);
    margin-bottom: var(--space-xl);
}

.waitlist-form {
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
    margin-bottom: var(--space-md);
}

.waitlist-form .form-group {
    text-align: left;
}

.privacy-notice {
    font-size: var(--body-small);
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.success-message,
.error-message {
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
    margin-top: var(--space-md);
}

.success-message h3 {
    color: var(--primary-green);
    margin-bottom: var(--space-sm);
}

.success-message p {
    color: var(--medium-gray);
    margin: 0;
}

.error-message h3 {
    color: var(--soft-red);
    margin-bottom: var(--space-sm);
}

.error-message p {
    color: var(--medium-gray);
    margin: 0;
}

/* ================================
   FOOTER
   ================================ */

.footer {
    background-color: var(--deep-black);
    color: var(--pure-white);
    padding: var(--space-xxl) 0 var(--space-lg) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-md);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--primary-green);
}

.footer-section h3 {
    color: var(--pure-white);
    margin-bottom: var(--space-md);
    font-size: var(--body-large);
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: var(--space-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-green);
}

.footer-bottom {
    border-top: 1px solid var(--dark-gray);
    padding-top: var(--space-md);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */

/* Large Desktop */
@media (min-width: 1400px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Desktop */
@media (max-width: 1200px) {
    .hero .container {
        gap: var(--space-xl);
    }
}

/* Tablet */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--pure-white);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-section);
        transform: translateY(-100%);
        transition: transform var(--transition-normal);
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-xl);
    }

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .steps-container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

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

    .steps-container {
        grid-template-columns: 1fr;
    }

    .testimonial-card {
        margin: 0;
        width: 100%;
    }

    .carousel-controls {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .navbar .container {
        padding-top: var(--space-xs);
        padding-bottom: var(--space-xs);
        min-height: 64px;
    }

    .hero {
        min-height: 90vh;
    }

    .feature-card,
    .step,
    .waitlist-form {
        padding: var(--space-md);
    }

    .testimonial-card {
        padding: var(--space-md);
    }

    .hero-actions .btn {
        padding: 12px 20px;
    }
}