/* ==========================================================================
   Pamarthi Siva Naga Sai - Professional Portfolio Stylesheet
   Multi-Page Website (Clean White Theme)
   ========================================================================== */

/* 1. Design Tokens & CSS Variables */
:root {
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-subtle: #F1F5F9;
    --bg-glass: rgba(255, 255, 255, 0.94);
    
    --text-primary: #0F172A;
    --text-secondary: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    
    --accent-blue: #02569B;
    --accent-flutter: #0175C2;
    --accent-cyan: #0284C7;
    --accent-gradient: linear-gradient(135deg, #02569B 0%, #0175C2 50%, #0284C7 100%);
    --accent-soft: rgba(2, 132, 199, 0.08);
    --accent-border: rgba(2, 132, 199, 0.25);
    
    --border-color: #E2E8F0;
    --border-hover: #CBD5E1;
    
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-code: 'Fira Code', monospace;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.04);
    --shadow-card: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
    --shadow-hover: 0 20px 40px -10px rgba(2, 86, 155, 0.15), 0 8px 16px -4px rgba(15, 23, 42, 0.04);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Global Resets & Base Setup */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
}

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

ul {
    list-style: none;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 4rem 0;
    position: relative;
}

/* Typography Utilities */
.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

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

/* Page Banner Header for Inner Pages */
.page-banner {
    background: linear-gradient(135deg, #0F172A 0%, #02569B 100%);
    color: #FFFFFF;
    padding: 4rem 0 3.25rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    right: 0;
    height: 40px;
    background: var(--bg-primary);
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

.banner-subtitle {
    font-family: var(--font-code);
    font-size: 0.85rem;
    font-weight: 600;
    color: #38BDF8;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    display: block;
}

.banner-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #FFFFFF;
    letter-spacing: -0.5px;
    margin-bottom: 0.75rem;
}

.banner-desc {
    font-size: 1.05rem;
    color: #E2E8F0;
    max-width: 650px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 3rem;
}

.section-subtitle {
    font-family: var(--font-code);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 2px;
    display: block;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.title-underline {
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 0.75rem auto 1rem;
    border-radius: var(--radius-full);
}

.section-desc {
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    font-size: 1.02rem;
}

/* Button Component Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(2, 86, 155, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(2, 86, 155, 0.45);
    color: #FFFFFF;
}

.btn-secondary {
    background: #FFFFFF;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--bg-card-subtle);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-3px);
}

.btn-nav-cta {
    background: var(--accent-soft);
    color: var(--accent-blue);
    border: 1px solid var(--accent-border);
    padding: 0.6rem 1.25rem;
    font-size: 0.88rem;
}

.btn-nav-cta:hover {
    background: var(--accent-gradient);
    color: #FFFFFF;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(2, 86, 155, 0.3);
}

/* 3. Header & Navigation */
.navbar-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--accent-blue);
    background: var(--accent-soft);
}

.nav-link.active {
    color: var(--accent-blue);
    background: var(--accent-soft);
    font-weight: 700;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.menu-close {
    display: none;
}

/* 4. Home Hero Section */
.hero-section {
    padding: 4.5rem 0 3rem;
    position: relative;
    background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.08) 0%, transparent 60%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: center;
}

.badge-exp {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1rem;
    background: rgba(2, 132, 199, 0.08);
    border: 1px solid rgba(2, 132, 199, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-blue);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.15); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-name {
    font-size: 3.1rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 0.75rem;
    letter-spacing: -1px;
    color: var(--text-primary);
}

.hero-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.hero-title .divider {
    color: var(--text-muted);
    margin: 0 0.4rem;
}

.hero-description {
    font-size: 1.08rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.tech-stack-container {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.tech-stack-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 0.75rem;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.95rem;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-code);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.tech-badge i {
    color: var(--accent-blue);
}

.tech-badge:hover {
    border-color: var(--accent-blue);
    background: var(--accent-soft);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

/* Profile Circle Card (Centered Person Framing) */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
}

.profile-card-wrapper {
    position: relative;
    width: 310px;
    max-width: 100%;
    aspect-ratio: 1 / 1;
}

.profile-card {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    padding: 7px;
    background: linear-gradient(145deg, #02569B, #0284C7);
    box-shadow: 0 20px 40px rgba(2, 86, 155, 0.25);
    transition: var(--transition-normal);
}

.profile-card:hover {
    transform: scale(1.02);
    box-shadow: 0 25px 50px rgba(2, 86, 155, 0.35);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    border-radius: 50%;
    border: 5px solid #FFFFFF;
}

/* 5. About Page Layout & Beautiful Professional Biography Card */
.about-grid-layout {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.about-top-row {
    display: grid;
    grid-template-columns: 290px 1fr;
    gap: 2.5rem;
    align-items: center;
}

.about-profile-circle-card {
    width: 270px;
    height: 270px;
    border-radius: 50%;
    padding: 6px;
    background: linear-gradient(145deg, #02569B, #0284C7);
    box-shadow: 0 15px 35px rgba(2, 86, 155, 0.2);
    margin: 0 auto;
}

.about-profile-circle-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    border-radius: 50%;
    border: 4px solid #FFFFFF;
}

.about-card-main {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem 2.5rem;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.about-card-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--accent-gradient);
}

.about-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.35rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.bio-tag {
    font-family: var(--font-code);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: 1.5px;
    display: block;
    margin-bottom: 0.25rem;
}

.bio-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.bio-pill-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    color: var(--accent-blue);
    border-radius: var(--radius-full);
    font-family: var(--font-code);
    font-size: 0.82rem;
    font-weight: 700;
}

.about-text-content p {
    color: var(--text-secondary);
    font-size: 1.02rem;
    line-height: 1.75;
    margin-bottom: 1.15rem;
}

.lead-bio-para {
    font-size: 1.08rem !important;
    color: var(--text-primary) !important;
    background: var(--bg-card-subtle);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-blue);
}

.text-highlight {
    color: var(--accent-blue);
    font-weight: 700;
}

.bio-website-link {
    color: var(--accent-blue);
    font-weight: 700;
    text-decoration: underline;
}

.bio-website-link:hover {
    color: var(--accent-cyan);
}

.bio-highlights-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--border-color);
}

.bio-highlight-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.95rem;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.bio-highlight-tag i {
    color: var(--accent-blue);
}

/* Single Unified Stats Box on About Page */
.about-single-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem 2.25rem;
    box-shadow: var(--shadow-card);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}

.single-box-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 0.5rem;
    border-right: 1px solid var(--border-color);
}

.single-box-item:last-child {
    border-right: none;
}

.single-box-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.single-box-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.single-box-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* 6. Projects Showcase & Unique Phone Background Themes */
.projects-container {
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.project-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.project-image-wrapper {
    position: relative;
    overflow: hidden;
    padding: 2.5rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bg-theme-calc {
    background: radial-gradient(circle at 50% 30%, #312E81 0%, #1E1B4B 50%, #0F172A 100%);
}

.bg-theme-reminder {
    background: radial-gradient(circle at 50% 30%, #047857 0%, #064E3B 50%, #0F172A 100%);
}

.bg-theme-machine {
    background: radial-gradient(circle at 50% 30%, #B45309 0%, #451A03 50%, #0F172A 100%);
}

.bg-theme-attendance {
    background: radial-gradient(circle at 50% 30%, #6D28D9 0%, #3B0764 50%, #0F172A 100%);
}

.playstore-badge {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #FFFFFF;
    font-size: 0.82rem;
    font-weight: 700;
    padding: 0.45rem 1rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
    margin-bottom: 0.85rem;
}

.playstore-badge i {
    font-size: 0.95rem;
}

.mobile-mockup-frame {
    position: relative;
    width: 230px;
    height: 470px;
    background: #090D16;
    border: 9px solid #1E293B;
    border-radius: 40px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.55), inset 0 0 0 2px rgba(255, 255, 255, 0.15);
    overflow: hidden;
    transition: transform 0.4s ease;
}

.project-card:hover .mobile-mockup-frame {
    transform: translateY(-6px) scale(1.02);
}

.mobile-mockup-frame::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 75px;
    height: 18px;
    background: #090D16;
    border-radius: 12px;
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.mobile-mockup-frame::after {
    content: '';
    position: absolute;
    top: 14px;
    right: 32%;
    width: 8px;
    height: 8px;
    background: #1E293B;
    border-radius: 50%;
    z-index: 11;
}

.mobile-mockup-screen {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 30px;
}

.project-category-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #38BDF8;
    font-size: 0.8rem;
    font-family: var(--font-code);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    backdrop-filter: blur(8px);
    z-index: 20;
}

.project-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.project-type {
    font-size: 0.9rem;
    color: var(--accent-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.85rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 1.02rem;
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.project-features {
    margin-bottom: 1.35rem;
    background: var(--bg-card-subtle);
    padding: 1.1rem 1.35rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.project-features h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.45rem 1rem;
}

.feature-list li {
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.feature-list li i {
    color: var(--accent-blue);
    font-size: 0.8rem;
}

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    font-family: var(--font-code);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    color: var(--accent-blue);
    border-radius: var(--radius-sm);
}

.btn-project-detail {
    background: #FFFFFF;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.7rem 1.35rem;
    font-size: 0.92rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.btn-project-detail:hover {
    background: var(--accent-gradient);
    color: #FFFFFF;
    border-color: transparent;
}

/* 7. Contact Page Fully Responsive Layout & Equal Height Cards */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.25rem;
    align-items: stretch;
}

.contact-info-column,
.contact-form-column {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.contact-single-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    width: 100%;
}

.contact-row-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-card-subtle);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
    width: 100%;
}

.contact-row-item:hover {
    border-color: var(--accent-blue);
    background: #FFFFFF;
}

.contact-row-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.15rem;
    flex-shrink: 0;
}

.contact-row-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0; /* Prevents flex items from overflowing container */
    flex-grow: 1;
}

.contact-row-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 700;
}

.contact-row-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    word-break: break-word; /* Prevents long email from expanding mobile screen */
    overflow-wrap: anywhere;
}

.contact-row-value:hover {
    color: var(--accent-blue);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    width: 100%;
}

.contact-social-buttons {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1rem;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.social-btn:hover {
    background: var(--accent-gradient);
    color: #FFFFFF;
    border-color: transparent;
}

/* 8. Freelancer Callout Banner */
.freelancer-section {
    padding: 1.5rem 0 3.5rem;
}

.freelancer-banner-card {
    background: linear-gradient(135deg, #0F172A 0%, #02569B 100%);
    border-radius: var(--radius-lg);
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    color: #FFFFFF;
    box-shadow: 0 15px 35px rgba(2, 86, 155, 0.2);
    border: 1px solid rgba(2, 132, 199, 0.3);
}

.freelancer-icon-box {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #38BDF8;
    flex-shrink: 0;
}

.freelancer-info {
    flex-grow: 1;
}

.freelancer-tag {
    font-family: var(--font-code);
    font-size: 0.8rem;
    font-weight: 600;
    color: #38BDF8;
    letter-spacing: 1.5px;
    display: block;
    margin-bottom: 0.3rem;
}

.freelancer-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 0.3rem;
}

.freelancer-desc {
    font-size: 0.98rem;
    color: #E2E8F0;
}

.btn-freelancer {
    background: #FFFFFF;
    color: #02569B;
    font-weight: 700;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.btn-freelancer:hover {
    background: #38BDF8;
    color: #0F172A;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.4);
}

/* 9. Feature Highlight Section */
.home-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.home-summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
    text-align: center;
}

.home-summary-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.summary-card-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.5rem;
    margin: 0 auto 1.25rem;
}

.home-summary-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.home-summary-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.link-arrow {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.link-arrow:hover {
    gap: 0.7rem;
    color: var(--accent-cyan);
}

/* 10. Skills Page Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.skill-category-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-hover);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1.75rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.category-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 1.2rem;
}

.category-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.35rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
}

.skill-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-name i {
    color: var(--accent-blue);
    font-size: 0.95rem;
}

.skill-level {
    font-family: var(--font-code);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent-blue);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-card-subtle);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

/* 11. Services Page Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem 1.75rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.service-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.service-icon-box {
    width: 54px;
    height: 54px;
    background: var(--accent-soft);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.5rem;
    margin-bottom: 1.35rem;
    border: 1px solid var(--accent-border);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-bullet-tag {
    align-self: flex-start;
    font-family: var(--font-code);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: var(--accent-soft);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--accent-border);
}

/* 12. Experience Page Timeline */
.timeline-wrapper {
    max-width: 880px;
    margin: 0 auto;
    position: relative;
}

.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background: #FFFFFF;
    border: 3px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.2rem;
    box-shadow: 0 0 15px rgba(2, 86, 155, 0.25);
}

.timeline-content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

.role-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.duration-badge {
    font-family: var(--font-code);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: var(--accent-soft);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--accent-border);
}

.ref-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: var(--bg-card-subtle);
    padding: 0.4rem 0.95rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.ref-link:hover {
    background: var(--accent-soft);
    border-color: var(--accent-blue);
}

.responsibilities-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.responsibility-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem 1.5rem;
}

.responsibility-list li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.55;
}

.responsibility-list li i {
    color: var(--accent-blue);
    margin-top: 0.2rem;
}

/* Career Objective Banner */
.objective-card {
    background: linear-gradient(135deg, #0F172A 0%, #02569B 100%);
    border-radius: var(--radius-lg);
    padding: 3rem;
    display: flex;
    align-items: center;
    gap: 2.5rem;
    color: #FFFFFF;
    box-shadow: var(--shadow-hover);
    margin-top: 3rem;
}

.objective-icon {
    width: 70px;
    height: 70px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #FFFFFF;
    flex-shrink: 0;
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.4);
}

.objective-body {
    flex-grow: 1;
}

.objective-tag {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: #38BDF8;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 0.5rem;
}

.objective-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #FFFFFF;
    line-height: 1.6;
}

/* 13. Strengths Grid */
.strengths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.strength-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.85rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.strength-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.strength-icon {
    width: 46px;
    height: 46px;
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.3rem;
    margin-bottom: 1.1rem;
}

.strength-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.strength-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 14. Contact Form Styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.required {
    color: #EF4444;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

.input-wrapper input,
.input-wrapper textarea {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-fast);
}

.text-area-wrapper {
    align-items: flex-start;
}

.text-area-wrapper .input-icon {
    top: 1rem;
}

.input-wrapper input:focus,
.input-wrapper textarea:focus {
    border-color: var(--accent-blue);
    background: #FFFFFF;
    box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.12);
}

.btn-submit {
    width: 100%;
    padding: 0.9rem;
    font-size: 0.98rem;
    margin-top: 0.5rem;
}

.form-toast {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    display: none;
}

.form-toast.success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #15803D;
}

.form-toast.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #B91C1C;
}

/* 15. Project Detail Modal Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    padding: 2.5rem;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--accent-blue);
}

.modal-header-section {
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.modal-category {
    font-family: var(--font-code);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-blue);
}

.modal-preview-img {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.modal-section-block {
    margin-bottom: 1.5rem;
}

.modal-section-block h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-section-block p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.98rem;
}

/* 16. Footer & Back To Top Button */
.footer {
    background-color: #0F172A;
    color: #FFFFFF;
    padding: 3.5rem 0 2rem;
    margin-top: auto;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #FFFFFF;
}

.footer-role {
    font-size: 0.95rem;
    color: #38BDF8;
    font-weight: 600;
    margin-top: 0.25rem;
}

.footer-sub {
    font-size: 0.88rem;
    color: #94A3B8;
}

.footer-links {
    display: flex;
    gap: 1.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    font-size: 0.92rem;
    color: #CBD5E1;
}

.footer-links a:hover {
    color: #38BDF8;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    color: #94A3B8;
    font-size: 0.88rem;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 46px;
    height: 46px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: #FFFFFF;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(2, 86, 155, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
}

/* 17. Responsive Layout Breakpoints */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-description {
        max-width: 100%;
    }

    .tech-stack-container {
        width: 100%;
    }

    .tech-badges {
        justify-content: center;
    }

    .profile-card-wrapper {
        width: 270px;
        height: 270px;
        margin-top: 2rem;
    }

    .freelancer-banner-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }

    .about-top-row {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-single-box {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .single-box-item {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }

    .single-box-item:nth-child(3),
    .single-box-item:nth-child(4) {
        border-bottom: none;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-single-box,
    .contact-form {
        height: auto; /* Natural content height on tablet & mobile */
    }

    .skills-grid, .services-grid, .strengths-grid, .home-summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-card {
        grid-template-columns: 1fr;
    }

    .mobile-mockup-frame {
        width: 210px;
        height: 430px;
    }

    .objective-card {
        flex-direction: column;
        text-align: center;
        padding: 2.25rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 2rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        clip-path: circle(0% at 100% 0);
        transition: clip-path 0.4s ease-in-out;
    }

    .nav-menu.open {
        clip-path: circle(140% at 100% 0);
    }

    .nav-list {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem 1rem;
    }

    .mobile-toggle {
        display: block;
    }

    .btn-nav-cta {
        display: none;
    }

    .hero-name {
        font-size: 2.15rem;
    }

    .hero-title {
        font-size: 1.1rem;
    }

    .banner-title {
        font-size: 1.9rem;
    }

    .profile-card-wrapper {
        width: 240px;
        height: 240px;
    }

    .about-profile-circle-card {
        width: 230px;
        height: 230px;
    }

    .about-single-box {
        grid-template-columns: 1fr;
        padding: 1.25rem;
    }

    .single-box-item {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 0.85rem;
    }

    .single-box-item:last-child {
        border-bottom: none;
    }

    .contact-single-box,
    .contact-form {
        padding: 1.5rem;
    }

    .contact-social-buttons {
        flex-direction: column;
    }

    .social-btn {
        width: 100%;
    }

    .skills-grid, .services-grid, .strengths-grid, .home-summary-grid {
        grid-template-columns: 1fr;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

    .responsibility-list {
        grid-template-columns: 1fr;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }
}