/* ============ ROOT VARIABLES ============ */
:root {
    --void: #0A0E1A;
    --slate: #111827;
    --charcoal: #1F2333;
    --signal: #4AFFC4;
    --signal-hover: #3AE6B0;
    --signal-active: #2AD69C;
    --white: #FFFFFF;
    --off-white: #F5F5F5;
    --mist: #9CA3AF;
    --gray: #6B7A99;
    --dark-gray: #4B5670;
}

/* ============ RESET & BASE ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--void);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

button {
    font-family: inherit;
}

/* ============ HEADER ============ */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(74, 255, 196, 0.2);
    z-index: 1000;
    padding: 1rem 0;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--white);
    text-decoration: none;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon-img {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    white-space: nowrap;
}

.logo-nano {
    color: var(--white);
}

.logo-voice {
    color: var(--signal);
}

nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

nav a {
    color: var(--off-white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--signal);
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(74, 255, 196, 0.3);
    color: var(--white);
    font-size: 1.1rem;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
}

/* ============ BUTTONS ============ */
.cta-button {
    background: var(--signal);
    color: var(--void);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-button:hover {
    background: var(--signal-hover);
    transform: translateY(-2px);
}

.cta-button:active {
    background: var(--signal-active);
    transform: translateY(0);
}

.secondary-button {
    background: transparent;
    color: var(--signal);
    border: 1.5px solid var(--signal);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.secondary-button:hover {
    background: rgba(74, 255, 196, 0.1);
    border-color: var(--signal-hover);
    color: var(--signal-hover);
}

.full-width {
    width: 100%;
}

/* ============ HERO SECTION ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, rgba(74, 255, 196, 0.05) 0%, rgba(17, 24, 39, 0) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(74, 255, 196, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
    animation: slideUpFade 0.8s ease-out;
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-family: 'Syne', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 span {
    color: var(--signal);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--mist);
    margin-bottom: 2.5rem;
    font-weight: 400;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    font-size: 1.5rem;
    color: var(--signal);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ============ FEATURES SECTION ============ */
.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-family: 'Syne', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--mist);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(74, 255, 196, 0.2);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 1;
}

.feature-card:hover {
    border-color: var(--signal);
    transform: translateY(-5px);
    background: rgba(17, 24, 39, 1);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--signal), transparent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(74, 255, 196, 0.15);
    border: 1px solid rgba(74, 255, 196, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--signal);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-family: 'Syne', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--white);
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============ BENEFITS SECTION ============ */
.benefits {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, rgba(74, 255, 196, 0.03) 0%, rgba(17, 24, 39, 0.5) 100%);
}

.benefits-container {
    max-width: 1200px;
    margin: 0 auto;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-item {
    background: transparent;
    display: flex;
    gap: 1rem;
    opacity: 1;
}

.benefit-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: rgba(74, 255, 196, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--signal);
    font-size: 1.25rem;
}

.benefit-text h3 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.benefit-text p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* ============ PRICING SECTION ============ */
.pricing {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    align-items: start;
}

.pricing-card {
    background: var(--slate);
    border: 1.5px solid rgba(74, 255, 196, 0.3);
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
    opacity: 1;
}

.pricing-card:hover {
    transform: translateY(-3px);
}

.pricing-card.featured {
    border: 2px solid var(--signal);
}

.pricing-card.featured:hover {
    transform: translateY(-6px);
}

.pricing-card .featured-badge {
    position: absolute;
    top: -12px;
    left: 20px;
    background: var(--signal);
    color: var(--void);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.pricing-card .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--signal);
    margin: 1rem 0;
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--mist);
}

.pricing-card .description {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-card ul li {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.pricing-card ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--signal);
    font-weight: bold;
}

/* ============ CTA SECTION ============ */
.cta-section {
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(74, 255, 196, 0.08) 0%, rgba(17, 24, 39, 0.5) 100%);
    border-top: 1px solid rgba(74, 255, 196, 0.2);
    border-bottom: 1px solid rgba(74, 255, 196, 0.2);
}

.cta-section h2 {
    font-family: 'Syne', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.cta-section p {
    font-size: 1.1rem;
    color: var(--mist);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============ FOOTER ============ */
footer {
    background: rgba(17, 24, 39, 0.5);
    border-top: 1px solid rgba(74, 255, 196, 0.2);
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
}

.footer-section h4 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--mist);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(74, 255, 196, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--signal);
    text-decoration: none;
}

/* ============ NOTIFICATION ============ */
.nv-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--signal);
    color: var(--void);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    z-index: 9999;
    font-family: 'Inter', sans-serif;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

@keyframes slideInNotif {
    from { transform: translateX(400px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutNotif {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(400px); opacity: 0; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
    nav {
        gap: 1.5rem;
    }

    nav a {
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.4rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .section-header h2 {
        font-size: 1.9rem;
    }

    .cta-section h2 {
        font-size: 1.9rem;
    }
}

@media (max-width: 640px) {
    .mobile-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    nav {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--void);
        border-bottom: 1px solid rgba(74, 255, 196, 0.2);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    nav.open {
        max-height: 400px;
        padding: 1rem 2rem 1.5rem;
    }

    nav a {
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(74, 255, 196, 0.08);
    }

    nav .cta-button {
        margin-top: 1rem;
        text-align: center;
    }

    .hero {
        min-height: auto;
        padding: 7rem 1.25rem 3rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .features, .benefits, .pricing {
        padding: 3rem 1.25rem;
    }

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

    .pricing-card {
        padding: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .cta-section h2 {
        font-size: 1.6rem;
    }

    .logo {
        font-size: 1.1rem;
    }
}