/*
=================================================================
EMMANUEL SAMPSON PORTFOLIO - ENHANCED STYLESHEET
=================================================================
This stylesheet combines the best features of the original and
new CSS files, and adds new visual enhancements for a more
dynamic and professional user experience.
=================================================================
*/

/* ===== CSS Variables for Clean Code ===== */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f4c75;
    --highlight-color: #3282b8;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-light: #6a6a6a;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.15);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --font-main: 'Titillium Web', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    --sidebar-width: 250px;
    --mobile-header-height: 60px;
}

/* ===== Global Styles ===== */
* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin-top: 0;
}

h1 {
    font-size: clamp(1.75rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(1.25rem, 3vw, 2.5rem);
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

h3 {
    font-size: clamp(1.1rem, 2vw, 1.8rem);
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* NEW: Animated Gradient for Hero Title */
.hero-title {
    background: linear-gradient(135deg, var(--primary-color) 20%, var(--highlight-color) 80%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textShine 5s linear infinite;
}

@keyframes textShine {
    to {
        background-position: 200% center;
    }
}


/* ===== Mobile Header & Sidebar Toggle (Mobile First) ===== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--mobile-header-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    z-index: 1040;
    padding: 0 1rem;
    align-items: center;
    justify-content: space-between;
}

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

.sidebar-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 45px;
    height: 45px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    padding: 0;
}

.sidebar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary-color);
    position: relative;
    transition: all var(--transition-fast);
}

.sidebar-toggle span::before,
.sidebar-toggle span::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: currentColor;
    left: 0;
    transition: all var(--transition-fast);
}

.sidebar-toggle span::before { top: -7px; }
.sidebar-toggle span::after { bottom: -7px; }

body.sidebar-open .sidebar-toggle span { background: transparent; }
body.sidebar-open .sidebar-toggle span::before { top: 0; transform: rotate(45deg); }
body.sidebar-open .sidebar-toggle span::after { bottom: 0; transform: rotate(-45deg); }

/* ===== Navigation Sidebar ===== */
.navbar {
    display: flex;
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
    height: 100vh;
    transition: all var(--transition-normal);
}

.navbar.fixed-left {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    flex-flow: column nowrap;
    align-items: flex-start;
    z-index: 1030;
    padding: 2rem 1.5rem;
    transition: transform var(--transition-normal);
}

.sidebar-overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1025;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none; /* Prevents clicks when invisible */
}

body.sidebar-open .sidebar-overlay {
    opacity: 1;
    pointer-events: auto; /* Allows clicks ONLY when visible */
}

#logo {
    width: 80px;
    height: auto;
    margin: 0 auto 2rem;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    transition: transform var(--transition-normal);
}

.logo-animation { animation: float 3s ease-in-out infinite; }

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

.navbar-nav {
    width: 100%;
    margin-bottom: auto;
    padding: 0;
}

.navbar-nav li {
    list-style: none;
    margin-bottom: 0.5rem;
}

.navbar-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}

.navbar-nav a:hover {
    background: var(--bg-secondary);
    color: var(--highlight-color);
    transform: translateX(5px);
}

.hover-underline-animation {
    position: relative;
    color: var(--text-primary);
}

.hover-underline-animation::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 50%;
    background: linear-gradient(90deg, var(--highlight-color), var(--accent-color));
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.hover-underline-animation:hover::after { width: 100%; }

.icons-container {
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
}

.icons-container a {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-normal);
    margin: 0.25rem 0.5rem;
}

.icons-container a:hover {
    color: var(--highlight-color);
    transform: translateY(-2px);
}

.email-link, .linkedin-link { font-size: 1.5rem; }
.email-text, .linkedin-text {
    font-size: 0.9rem;
    display: block;
    word-break: break-all;
}


/* ===== Main Content Area ===== */
.resume-container {
    margin-left: var(--sidebar-width);
    padding: 3rem;
    max-width: 1400px;
    min-height: 100vh;
    transition: margin-left var(--transition-normal), padding var(--transition-normal);
}

/* ===== Hero Section ===== */
.hero-section {
    background: linear-gradient(135deg, rgba(220, 235, 255, 0.75), rgba(200, 220, 245, 0.85)); /* UPDATED: Blue gradient */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* NEW: Enhanced Hero background animation */
.hero-section::before, .hero-section::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    /* UPDATED: Increased opacity for a stronger blue pulse */
    background: radial-gradient(circle, rgba(50, 130, 184, 0.2) 0%, transparent 65%);
    animation: pulse 8s ease-in-out infinite;
}
.hero-section::after {
    animation-delay: -4s;
    animation-direction: reverse;
    /* UPDATED: Increased opacity for a stronger blue pulse */
    background: radial-gradient(circle, rgba(15, 76, 117, 0.18) 0%, transparent 60%);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.15); opacity: 0.2; }
}

.bio-container {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.bio-image { flex: 0 0 200px; }

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    border: 5px solid rgba(255, 255, 255, 0.8);
    transition: all var(--transition-normal);
}

.profile-img:hover {
    transform: scale(1.05) rotate(5deg);
    box-shadow: var(--shadow-xl);
}

.bio-text {
    flex: 1;
    min-width: 300px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.hero-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ===== Skill Badges ===== */
.skill-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.skill-badge:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--highlight-color);
    animation: skillPulse 1.5s infinite;
}

.skill-badge span {
    position: relative;
    z-index: 1;
}

/* NEW: Skill badge pulse effect */
@keyframes skillPulse {
    0% { box-shadow: 0 0 0 0 rgba(50, 130, 184, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(50, 130, 184, 0); }
    100% { box-shadow: 0 0 0 0 rgba(50, 130, 184, 0); }
}

/* NEW: Quick Stats section */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}
.stat-card {
    background: rgba(50, 130, 184, 0.05);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid rgba(50, 130, 184, 0.1);
}
.stat-card:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--highlight-color);
    font-family: var(--font-display);
}
.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* ===== Tab Navigation ===== */
.tab-navigation {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 3rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-button {
    background: transparent;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    flex-shrink: 0;
    color: var(--text-secondary);
}

.tab-button:hover {
    background: var(--bg-secondary);
    color: var(--highlight-color);
    transform: translateY(-2px);
}

.tab-button.active {
    background: var(--highlight-color);
    color: white;
    box-shadow: 0 4px 10px rgba(50, 130, 184, 0.4);
}

/* ===== Tab Content ===== */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInUp 0.5s ease-in-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==== Section Styles ==== */
.resume-section {
    margin-bottom: 3rem;
}
.section-title {
    position: relative;
    padding-bottom: 1rem;
    margin-bottom: 2.5rem;
    color: var(--primary-color);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--highlight-color), var(--accent-color));
    border-radius: 2px;
}

/* ===== Cards and Containers ===== */
.resume-card, .project-card, .ach-card-v2, .skill-category {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* RESTORED: General card hover lift effect */
.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--highlight-color);
}

/* RESTORED: More dramatic float hover effect for larger cards */
.hover-float:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--highlight-color);
}

/* NEW: Sheen animation on hover for project cards */
.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.8s ease;
    transform: skewX(-25deg);
}
.project-card:hover::after {
    left: 150%;
}

/* ===== Overview Grid ===== */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.overview-card {
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    z-index: 1;
}
.overview-card h3 { color: var(--highlight-color); }

/* NEW: Gradient border on hover for overview cards */
.overview-card::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: linear-gradient(45deg, var(--highlight-color), var(--accent-color));
    border-radius: var(--border-radius);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-normal);
}
.overview-card:hover {
    background: white;
    transform: translateY(-10px) scale(1.02);
}
.overview-card:hover::before { opacity: 1; }
.overview-card:hover h3 { color: var(--primary-color); }
.card-icon {
    font-size: 3rem;
    color: var(--highlight-color);
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}
.overview-card:hover .card-icon {
    transform: scale(1.1) rotate(-5deg);
}

/* Add this new rule to your Overview Grid styles */
.overview-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.overview-card-link:hover {
    text-decoration: none;
    color: inherit;
}
/* ===== RESTORED & ENHANCED: Timeline ===== */
.timeline {
    position: relative;
    padding-left: 3rem;
    margin-top: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 5px;
    bottom: 5px;
    width: 3px;
    background: var(--bg-tertiary);
    border-radius: 2px;
}
.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}
.timeline-item:last-child {
    margin-bottom: 0;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -38px;
    top: 8px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 3px solid var(--highlight-color);
    z-index: 1;
    transition: all var(--transition-normal);
}
.timeline-item:hover::before {
    transform: scale(1.2);
    background: var(--highlight-color);
}
.timeline-date {
    position: absolute;
    left: -20px; /* Pulls the date slightly to the right */
    top: 5px;
    width: 125px; /* Gives the date text more space */
    text-align: right;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}
.timeline-content {
    background: rgba(255, 255, 255, 0.9);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
}
.timeline-content .subtitle {
    font-weight: 600;
    color: var(--secondary-color);
}
.achievements-list { margin-top: 1rem; }
.achievement-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.achievement-item i { color: var(--highlight-color); }
.achievement-item a { 
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px dotted var(--highlight-color);
    transition: all var(--transition-fast);
}
.achievement-item a:hover {
    color: var(--highlight-color);
    border-bottom-style: solid;
}

/* ===== Experience & Research Grids ===== */
.experience-grid { display: grid; gap: 2rem; }
.research-projects { display: grid; gap: 2rem; }
.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.project-status {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}
.project-status.active {
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}
.tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--bg-tertiary);
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.project-card:hover .tag {
    background-color: var(--highlight-color);
    color: white;
}

/* ===== Achievements Section - V2 Styles ===== */
.achievements-grid-v2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.ach-card-v2:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--highlight-color);
}
.leadership-card-v2 { grid-column: 1 / -1; }
.ach-card-header-v2 {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}
.ach-card-header-v2 i { font-size: 1.5rem; color: var(--highlight-color); }
.ach-card-header-v2 h3 { margin: 0; font-size: 1.3rem; color: var(--secondary-color); }
.ach-card-body-v2 { padding: 1.5rem; flex-grow: 1; }

/* MODIFIED: Leadership grid is now inside an accordion */
.leadership-grid-v2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0.75rem; /* Reduced gap */
}

/* MODIFIED: Shrunk leadership item boxes */
.leadership-item-v2 {
    background-color: var(--bg-tertiary);
    padding: 0.5rem 0.75rem; /* Reduced padding */
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
    transition: all var(--transition-fast);
    font-size: 0.9rem; /* Reduced font size */
}

.leadership-item-v2:hover { 
    transform: translateX(5px); 
    background-color: #e0e4e8;
}
.leadership-item-v2 strong { color: var(--primary-color); margin-right: 0.5em; }
.leadership-item-v2 span { color: var(--text-secondary); }

/* NEW: Leadership Accordion Styles */
.leadership-accordion .accordion-header {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.leadership-accordion .accordion-header:first-child {
    margin-top: 0;
}
.leadership-accordion .accordion-header:hover {
    background-color: var(--bg-tertiary);
}
.leadership-accordion .accordion-header .accordion-main-icon {
    color: var(--highlight-color);
    font-size: 1.2rem;
}
.leadership-accordion .accordion-arrow {
    margin-left: auto;
    transition: transform var(--transition-normal);
}
.leadership-accordion .accordion-header.active .accordion-arrow {
    transform: rotate(180deg);
}
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 0 0 8px 8px;
    border: 1px solid var(--border-color);
    border-top: none;
}
.accordion-content .leadership-grid-v2 {
    padding: 1rem;
}

.accolade-item-v2 {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e9ecef;
}
.accolade-item-v2:last-child { border-bottom: none; }
.accolade-item-v2 i { color: var(--accent-color); width: 20px; text-align: center; margin-top: 4px;}
.accolade-item-v2 span { font-size: 1rem; color: var(--text-primary); }
.accolade-item-v2 span strong { font-family: var(--font-display); color: var(--secondary-color); }

/* ===== Skills Section ===== */
.skills-container { display: grid; gap: 2rem; }
.skill-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}
.language-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.language-card {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}
.language-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.language-flag { font-size: 2.5rem; margin-bottom: 0.5rem; }
.instrument-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}
.instrument-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}
.instrument-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: var(--highlight-color);
    color: white;
}

/* ===== Contact Section ===== */
.contact-section { text-align: center; }
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
    text-align: left;
}
.contact-methods { margin-top: 2rem; }
.contact-method {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 1;
    overflow: hidden;
}
.contact-method i {
    font-size: 1.5rem;
    width: 30px;
    color: var(--highlight-color);
    transition: all var(--transition-normal);
}
.contact-method h4 { margin:0 0 0.25rem 0; }
.contact-method p { margin:0; color: var(--text-secondary); transition: all var(--transition-normal); }
.contact-method:hover { color: white; transform: translateX(10px); }
.contact-method:hover i { color: white; }
.contact-method:hover p { color: rgba(255,255,255,0.8); }

/* NEW: Contact method hover fill effect */
.contact-method::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: var(--highlight-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
    z-index: -1;
}
.contact-method:hover::before { transform: scaleX(1); }
.contact-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    color: white;
    text-align: center;
}
.contact-cta h3 {
    color: white;
    text-shadow: 0 1px 3px rgba(0,0,0,0.2); /* Adds depth */
}

.contact-cta p {
    color: rgba(255, 255, 255, 0.9); /* Makes description clear but distinct from header */
}
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 1rem 2rem;
    background: white;
    color: var(--highlight-color);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all var(--transition-normal);
}
.cta-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
    gap: 1rem;
}
.cta-button i { transition: transform var(--transition-normal); }
.cta-button:hover i { transform: translateX(5px); }

/* NEW: Section Divider */
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    margin: 2.5rem 0;
    border: none;
}


/* ===== Utility, Animation & Print Styles ===== */
.footer {
    margin-top: auto;
    text-align: center;
    padding: 2rem 1rem 1rem;
    font-size: 0.85rem;
}
.footer a { color: var(--text-secondary); text-decoration: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--highlight-color); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-color); }

/* NEW: Progress Indicator */
.progress-indicator {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--highlight-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.1s linear;
    z-index: 1100;
}

/* Base states for scroll animations */
.fade-in, .slide-in, .timeline-item, .card-animation, .ach-card-v2, .skill-category, .overview-card, .project-card {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.timeline-item, .slide-in { transform: translateX(-30px); }
.fade-in, .card-animation, .ach-card-v2, .skill-category, .overview-card, .project-card { transform: translateY(30px); }
.fade-in.visible, .slide-in.visible, .timeline-item.visible, .card-animation.visible, .ach-card-v2.visible, .skill-category.visible, .overview-card.visible, .project-card.visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* ===== Mobile Responsiveness ===== */
@media (max-width: 992px) {
    .mobile-header, .sidebar-toggle { display: flex; }
    .navbar.fixed-left { transform: translateX(-100%); z-index: 1050; }
    body.sidebar-open .navbar.fixed-left { transform: translateX(0); }
    .sidebar-overlay { display: block; }
    .resume-container, #gallery {
        margin-left: 0;
        padding: calc(var(--mobile-header-height) + 1rem) 1.5rem 1.5rem;
    }
    .hero-section { padding: 2rem; }
    .bio-container { flex-direction: column; text-align: center; gap: 2rem; }
    .bio-image { flex: unset; }
    .profile-img { width: 150px; height: 150px; }
    .overview-grid { grid-template-columns: 1fr; }
    .timeline { padding-left: 2rem; }
    .timeline::before { left: 8px; }
    .timeline-item::before { left: -31px; top: 10px; }
    .timeline-date { position: static; margin-bottom: 0.5rem; text-align: left; font-size: 0.85rem; }
    .achievements-grid-v2 { grid-template-columns: 1fr; }
    .contact-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { font-size: 15px; }
    .resume-container { padding: calc(var(--mobile-header-height) + 1rem) 1rem 1rem; }
    .tab-navigation { gap: 0.25rem; padding: 0.75rem; }
    .tab-button { padding: 0.6rem 1rem; font-size: 0.9rem; }
    .resume-card, .project-card, .ach-card-v2, .skill-category { padding: 1.5rem; }
    .quick-stats { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .stat-number { font-size: 2rem; }
    .leadership-grid-v2 { grid-template-columns: 1fr; } /* Single column on mobile */
}

@media (hover: none) and (pointer: coarse) {
    .hover-lift:hover, .hover-float:hover, .overview-card:hover, .contact-method:hover {
        transform: none;
    }
}

@media print {
    .navbar, .mobile-header, .sidebar-overlay, .tab-navigation, .footer, .progress-indicator, .leadership-accordion .accordion-header {
        display: none !important;
    }
    .accordion-content {
        max-height: none !important; /* Ensure content is visible for print */
        display: block !important;
        padding-bottom: 20px;
    }
    body { background: #fff; }
    .resume-container { margin-left: 0 !important; padding: 0 !important; box-shadow: none; }
    .resume-card, .project-card, .ach-card-v2, .skill-category, .hero-section {
        box-shadow: none;
        backdrop-filter: none;
        background: #fff;
        border: 1px solid var(--border-color);
    }
    .tab-content { display: block !important; page-break-after: always; }
    a { color: black !important; text-decoration: none !important; }
}
/* ===== Download CV Button ===== */
.hero-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.download-cv-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--highlight-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    font-family: var(--font-main);
    text-decoration: none;
}

.download-cv-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--accent-color), var(--highlight-color));
}

.download-cv-btn:active {
    transform: translateY(-1px);
}

.download-cv-btn i {
    font-size: 1.2rem;
}

/* PDF Generation Styles */
.pdf-content {
    display: none;
    background: white;
    padding: 40px;
    font-family: 'Arial', sans-serif;
    color: #333;
    line-height: 1.6;
}

.pdf-header {
    border-bottom: 3px solid #1a1a2e;
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.pdf-section {
    margin-bottom: 30px;
}

.pdf-section h2 {
    color: #1a1a2e;
    font-size: 20px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid #e0e0e0;
}

/* Mobile responsiveness for download button */
@media (max-width: 768px) {
    .hero-actions {
        justify-content: center;
    }
    
    .download-cv-btn {
        font-size: 0.9rem;
        padding: 0.8rem 1.5rem;
    }
}