/* 
    Rahul Kushwah - Personal Website styles
    Theme: Modern, Dark/Slate, Premium
*/

:root {
    /* Color Palette - Premium Dark Theme */
    --clr-bg-main: #0a0a0c;
    --clr-bg-alt: #121216;
    --clr-bg-card: rgba(255, 255, 255, 0.03);
    
    --clr-text-primary: #ffffff;
    --clr-text-secondary: #a1a1aa;
    --clr-text-muted: #71717a;
    
    --clr-accent: #ffffff;      
    --clr-accent-hover: #e4e4e7;
    --clr-accent-glow: rgba(255, 255, 255, 0.15);
    
    --clr-border: rgba(255, 255, 255, 0.08);
    --clr-border-light: rgba(255, 255, 255, 0.15);

    --clr-gradient-text: linear-gradient(90deg, #ffffff, #9ca3af);
    --clr-success: #10b981; 

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --sp-xs: 0.5rem;
    --sp-sm: 1rem;
    --sp-md: 1.5rem;
    --sp-lg: 2.5rem;
    --sp-xl: 4rem;
    --sp-xxl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --br-sm: 4px;
    --br-md: 8px;
    --br-lg: 16px;
    --br-xl: 24px;
    --br-pill: 9999px;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--clr-bg-main);
    color: var(--clr-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--clr-text-primary);
    line-height: 1.2;
    font-weight: 500;
}

p {
    color: var(--clr-text-secondary);
}

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

ul, ol {
    list-style: none;
}

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

/* =========================================================================
   UTILITIES & ANIMATIONS
   ========================================================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-md);
}

.section {
    padding: var(--sp-xxl) 0;
    position: relative;
    z-index: 1;
}

.dark-bg {
    background-color: var(--clr-bg-alt);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.text-center { text-align: center; }
.justify-center { justify-content: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }
.mb-lg { margin-bottom: var(--sp-lg); }
.mb-xl { margin-bottom: var(--sp-xl); }
.mb-xxl { margin-bottom: var(--sp-xxl); }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }
.mt-xxl { margin-top: var(--sp-xxl); }

.opacity-70 { opacity: 0.7; }

/* Reveal Animations */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    border-radius: var(--br-pill);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-bg-main);
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--clr-accent-glow);
}

.btn-secondary {
    background-color: var(--clr-bg-card);
    color: var(--clr-text-primary);
    border-color: var(--clr-border);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--clr-border-light);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--clr-text-primary);
    border-color: var(--clr-border-light);
}

.btn-outline:hover {
    background: var(--clr-accent);
    border-color: var(--clr-accent);
    color: var(--clr-bg-main);
}

.btn-whatsapp {
    background-color: var(--clr-success);
    color: white;
}

.btn-whatsapp:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.2);
}

.btn-audio {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--clr-text-primary);
    border: 1px solid var(--clr-border-light);
    gap: 0.5rem;
}

.btn-audio:hover {
    background-color: var(--clr-bg-card);
    border-color: var(--clr-accent);
    color: var(--clr-accent);
}

.btn-audio svg {
    transition: transform var(--transition-fast);
}

.btn-audio:hover svg {
    transform: scale(1.1);
}

.btn-audio.playing {
    border-color: var(--clr-accent);
    color: var(--clr-accent);
    animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
    0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
    100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

/* Typography styles */
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--sp-md);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--clr-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--sp-xl);
}

.lead-text {
    font-size: 1.25rem;
    color: var(--clr-text-primary);
    font-weight: 500;
}

.highlight-text {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--clr-accent);
    margin-bottom: var(--sp-sm);
}

.highlight-text.large {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    background: var(--clr-gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* =========================================================================
   NAVIGATION
   ========================================================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    transition: all var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(10, 10, 12, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--clr-text-primary);
}

.logo span {
    color: var(--clr-accent);
}

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

.nav-link {
    font-size: 0.95rem;
    color: var(--clr-text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--clr-accent);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-btn span {
    width: 100%;
    height: 2px;
    background: var(--clr-text-primary);
    transition: all var(--transition-base);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--clr-bg-main);
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu .nav-link {
    font-size: 1.5rem;
    color: var(--clr-text-primary);
}

.no-scroll {
    overflow: hidden;
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 150px; /* Account for navbar + visual space */
    padding-bottom: 100px;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.hero-content {
    flex: 1;
    max-width: 1050px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-intro {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: var(--sp-md);
}

.profile-img-container {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--clr-border-light);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

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

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--clr-text-primary);
    margin-bottom: 0;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: inline-block;
    padding: 0.4rem 1rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--br-pill);
    background: var(--clr-bg-card);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.2rem);
    line-height: 1.1;
    margin-bottom: var(--sp-lg);
    letter-spacing: -0.03em;
}

.hero-title span {
    color: var(--clr-text-secondary);
    display: block;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    max-width: 650px;
    margin-bottom: var(--sp-xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-bg-glow {
    position: absolute;
    top: 20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
    z-index: 1;
    pointer-events: none;
}

/* =========================================================================
   WORKSPACE IMAGE (TRANSITION)
   ========================================================================= */
.workspace-section {
    padding-bottom: var(--sp-xxl);
}

.workspace-img-container {
    width: 100%;
    max-height: 600px;
    border-radius: var(--br-xl);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.workspace-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-base);
}

.workspace-img:hover {
    filter: grayscale(0%);
}

/* =========================================================================
   ABOUT / WHAT I DO
   ========================================================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xxl);
    align-items: start;
}

.about-text p {
    font-size: 1.15rem;
    margin-bottom: var(--sp-md);
}

.about-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-sm);
}

.card {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    padding: var(--sp-lg);
    border-radius: var(--br-lg);
    transition: all var(--transition-base);
}

.card:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-5px);
    border-color: var(--clr-border-light);
}

.card-icon {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: var(--clr-text-secondary);
    margin-bottom: var(--sp-md);
    display: inline-flex;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--br-pill);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--sp-xs);
}

.card p {
    font-size: 0.95rem;
    line-height: 1.5;
}

/* =========================================================================
   EXPERIENCE & VISION
   ========================================================================= */
.ev-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--sp-xxl);
}

.experience-badge {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--br-lg);
    width: fit-content;
}

.exp-number {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--clr-accent);
    line-height: 1;
}

.exp-text {
    font-size: 0.95rem;
    color: var(--clr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tag-list li {
    padding: 0.6rem 1.25rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--br-pill);
    font-size: 0.95rem;
    color: var(--clr-text-secondary);
    background: var(--clr-bg-main);
}

.blockquote {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-family: var(--font-heading);
    line-height: 1.4;
    color: var(--clr-text-primary);
    border-left: 3px solid var(--clr-border-light);
    padding-left: var(--sp-lg);
    margin-top: var(--sp-xl);
}

.vision-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--clr-border-light);
    padding: var(--sp-md) var(--sp-lg);
    border-radius: var(--br-md);
    display: inline-flex;
    align-items: center;
    backdrop-filter: blur(10px);
}

.vision-card p {
    font-size: 1.1rem;
    color: var(--clr-text-primary);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    margin: 0;
}

/* =========================================================================
   SERVICES & HELP
   ========================================================================= */
.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--sp-md);
}

.help-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: var(--sp-lg);
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--br-lg);
}

.check-icon {
    color: var(--clr-accent);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.help-item p {
    font-size: 1rem;
    color: var(--clr-text-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2px;
    background: var(--clr-border);
    border: 1px solid var(--clr-border);
    border-radius: var(--br-lg);
    overflow: hidden;
}

.service-card {
    background: var(--clr-bg-main);
    padding: var(--sp-lg) var(--sp-md);
    text-align: center;
}

.service-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--sp-sm);
}

.service-card p {
    font-size: 0.95rem;
}

.service-note {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--sp-md);
    border: 1px dashed var(--clr-border-light);
    border-radius: var(--br-md);
}

/* =========================================================================
   APPROACH
   ========================================================================= */
.approach-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.approach-text p {
    font-size: 1.15rem;
    color: var(--clr-text-secondary);
}

.cta-box {
    padding: var(--sp-lg);
    background: var(--clr-bg-card);
    border-radius: var(--br-lg);
    border: 1px solid var(--clr-border);
    display: inline-block;
}

.free-convo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--clr-text-primary);
}

/* =========================================================================
   PROCESS TIMELINE
   ========================================================================= */
.process-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 50px;
    bottom: 0;
    left: 24px;
    width: 1px;
    background: var(--clr-border);
    z-index: 0;
}

.process-step {
    display: flex;
    gap: var(--sp-lg);
    margin-bottom: var(--sp-xl);
    position: relative;
    z-index: 1;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--clr-bg-main);
    border: 2px solid var(--clr-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--clr-accent);
    flex-shrink: 0;
}

.step-content {
    padding-top: 10px;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--sp-xs);
}

.step-content p {
    font-size: 1.05rem;
}

/* =========================================================================
   AUDIENCE SECTION
   ========================================================================= */
.audience-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xxl);
}

.benefit-list li,
.detriment-list li {
    padding-left: 2rem;
    position: relative;
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
    color: var(--clr-text-primary);
}

.benefit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--clr-success);
    font-weight: bold;
}

.detriment-list li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: #ef4444; /* red */
    font-weight: bold;
}

/* =========================================================================
   WORK & TESTIMONIALS
   ========================================================================= */
.client-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--sp-sm);
    max-width: 900px;
    margin: 0 auto;
}

.client-tag {
    padding: 0.8rem 1.5rem;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--br-sm);
    color: var(--clr-text-secondary);
    font-weight: 500;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-md);
    max-width: 100%;
}

.testimonial-card {
    padding: var(--sp-lg);
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--br-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--clr-accent);
}

.testimonial-card .quote {
    font-size: 1.1rem;
    font-family: var(--font-body);
    color: var(--clr-text-primary);
    margin-bottom: var(--sp-md);
    line-height: 1.6;
    font-style: italic;
    flex-grow: 1;
}

.testimonial-card .author {
    color: var(--clr-accent);
    font-weight: 500;
    font-family: var(--font-heading);
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    padding: var(--sp-xxl) 0 var(--sp-lg);
}

.footer-content {
    max-width: 700px;
    margin: 0 auto;
}

.footer-lead {
    font-size: 1.5rem;
    color: var(--clr-text-primary);
}

.footer-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-bottom {
    border-top: 1px solid var(--clr-border);
    padding-top: var(--sp-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.copyright {
    font-size: 0.9rem;
}

/* =========================================================================
   MEDIA QUERIES
   ========================================================================= */
@media (max-width: 992px) {
    :root {
        --sp-xxl: 4rem;
        --sp-xl: 3rem;
        --sp-lg: 2rem;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 4rem;
    }

    .hero-intro {
        justify-content: center;
    }

    .hero-title {
        font-size: clamp(2.5rem, 5vw, 4rem);
    }

    .hero-description {
        margin: 0 auto var(--sp-xl);
    }

    .about-grid,
    .ev-grid,
    .audience-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-xl);
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .process-timeline::before {
        left: 20px;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

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

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }

    .about-cards {
        grid-template-columns: 1fr;
    }

    .footer-cta {
        flex-direction: column;
    }
    
    .footer-cta .btn {
        width: 100%;
    }
}