/* ========================================
   GTPro Premium B2B Stylesheet V2
   ======================================== */

/* ========================================
   1. CSS Variables & Base Styles
   ======================================== */

:root {
    /* Color Palette */
    --color-primary: #0A192F;
    --color-secondary: #172A45;
    --color-accent-health: #10B981;
    --color-accent-legal: #8B5CF6;
    --color-text-primary: #E2E8F0;
    --color-text-secondary: #94A3B8;
    --color-text-dark: #0F172A;
    --color-white: #FFFFFF;
    --color-bg-light: #F8FAFC;
    --color-border: #E2E8F0;
    
    /* Gradients */
    --gradient-health: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-legal: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
    --gradient-dark: linear-gradient(135deg, #0A192F 0%, #172A45 100%);
    --gradient-orb-1: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0) 70%);
    --gradient-orb-2: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(139, 92, 246, 0) 70%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 3rem;
    --font-size-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

/* ========================================
   2. Reset & Base
   ======================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-text-dark);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: var(--transition-base);
}

ul {
    list-style: none;
}

/* ========================================
   3. Accessibility
   ======================================== */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 100;
    border-radius: var(--radius-md);
}

.skip-link:focus {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
}

:focus-visible {
    outline: 2px solid var(--color-accent-health);
    outline-offset: 2px;
}

/* ========================================
   4. Utilities
   ======================================== */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ========================================
   5. Header & Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-base);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    z-index: 1001;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-display);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--color-accent-health);
    background: rgba(16, 185, 129, 0.05);
}

.nav-link-cta {
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
    content: '';
    display: block;
}

.nav-toggle-icon::before {
    transform: translateY(-6px);
}

.nav-toggle-icon::after {
    transform: translateY(4px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: calc(var(--spacing-xl) + 20px) var(--spacing-md) var(--spacing-md);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-slow);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link-cta {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   6. Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-dark);
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-orb-1);
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: var(--gradient-orb-2);
    bottom: -300px;
    right: -300px;
    animation-delay: 7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--gradient-orb-1);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-lg) 0;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.highlight-health {
    color: var(--color-accent-health);
    position: relative;
    display: inline-block;
}

.highlight-legal {
    color: var(--color-accent-legal);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    opacity: 0.9;
}

.hero-cta {
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-health);
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-arrow {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-accent-health);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent-health);
    border-radius: var(--radius-full);
    animation: scroll 2s ease-in-out infinite;
}

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

@keyframes scroll {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

/* ========================================
   7. Section Styles
   ======================================== */

.platforms,
.why-choose-us,
.faq-section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-health);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.section-description {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   8. Platform Cards
   ======================================== */

.platforms-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 1024px) {
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.platform-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    border-top: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, currentColor, transparent);
    opacity: 0;
    transition: var(--transition-base);
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.platform-card:hover::before {
    opacity: 1;
}

.card-health {
    border-top-color: var(--color-accent-health);
}

.card-health::before {
    color: var(--color-accent-health);
}

.card-legal {
    border-top-color: var(--color-accent-legal);
}

.card-legal::before {
    color: var(--color-accent-legal);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-white);
}

.card-health .card-icon {
    background: var(--gradient-health);
}

.card-legal .card-icon {
    background: var(--gradient-legal);
}

.card-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-health .card-badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-accent-health);
}

.card-legal .card-badge {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-accent-legal);
}

.card-title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.card-features li {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.card-features i {
    font-size: var(--font-size-md);
    flex-shrink: 0;
    margin-top: 2px;
}

.card-health .card-features i {
    color: var(--color-accent-health);
}

.card-legal .card-features i {
    color: var(--color-accent-legal);
}

.card-features strong {
    display: block;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 2px;
}

.card-features span {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    display: block;
    line-height: 1.5;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-white);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-health {
    background: var(--gradient-health);
}

.btn-legal {
    background: var(--gradient-legal);
}

.card-btn:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.card-btn i {
    transition: var(--transition-base);
}

.card-btn:hover i {
    transform: translateX(5px);
}

/* ========================================
   9. Why Choose Us / Differentials
   ======================================== */

.why-choose-us {
    background: var(--color-bg-light);
}

.differentials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .differentials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .differentials-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.differential-item {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-base);
    box-shadow: var(--shadow-md);
}

.differential-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.differential-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-health);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-white);
}

.differential-item:nth-child(even) .differential-icon {
    background: var(--gradient-legal);
}

.differential-item h3 {
    font-size: var(--font-size-md);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.differential-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   10. FAQ Section
   ======================================== */

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: var(--spacing-lg);
}

.faq-category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.faq-category-title i {
    color: var(--color-accent-health);
}

.faq-category:nth-child(even) .faq-category-title i {
    color: var(--color-accent-legal);
}

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    background: transparent;
    transition: var(--transition-base);
}

.faq-question:hover {
    background: var(--color-bg-light);
}

.faq-question i {
    flex-shrink: 0;
    transition: var(--transition-base);
    color: var(--color-accent-health);
}

.faq-question[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   11. Footer
   ======================================== */

.footer {
    background: var(--gradient-dark);
    color: var(--color-text-primary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1.5fr 2fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-logo-text {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
}

.footer-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-link {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    transition: var(--transition-base);
    line-height: 1.5;
}

.footer-link:hover {
    color: var(--color-accent-health);
    transform: translateX(3px);
}

.footer-link i {
    margin-top: 2px;
    flex-shrink: 0;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(226, 232, 240, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* ========================================
   12. Animations & Effects
   ======================================== */

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ========================================
   13. Responsive Design
   ======================================== */

@media (max-width: 768px) {
    :root {
        --font-size-2xl: 2rem;
        --font-size-xl: 1.5rem;
        --font-size-lg: 1.25rem;
        --spacing-xl: 4rem;
        --spacing-lg: 2rem;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .section-title {
        font-size: var(--font-size-lg);
    }
    
    .card-title {
        font-size: var(--font-size-md);
    }
    
    .platforms,
    .why-choose-us,
    .faq-section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .logo-img {
        height: 32px;
    }
    
    .hero-title {
        font-size: var(--font-size-lg);
    }
    
    .platform-card,
    .differential-item {
        padding: var(--spacing-md);
    }
}