/* ============================================
   PORTFOLIO - PROFESSIONAL STYLESHEET
   Modern, Clean, and Polished Design
   ============================================ */

/* --- Google Fonts loaded in HTML head --- */

/* ==========================================
   CSS CUSTOM PROPERTIES (THEME VARIABLES)
   ========================================== */
:root {
    --bg-color: #f8fafc;
    --bg-secondary: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.06);
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.15);
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --gradient: linear-gradient(135deg, #6366f1, #06b6d4);
    --gradient-text: linear-gradient(135deg, #6366f1, #06b6d4, #8b5cf6);
    --nav-bg: rgba(255, 255, 255, 0.85);
    --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --bg-light-alt: #f1f5f9;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --card-border: rgba(255, 255, 255, 0.06);
    --primary: #818cf8;
    --primary-light: #a5b4fc;
    --primary-dark: #6366f1;
    --primary-glow: rgba(129, 140, 248, 0.15);
    --accent: #22d3ee;
    --accent-light: #67e8f9;
    --gradient: linear-gradient(135deg, #818cf8, #22d3ee);
    --gradient-text: linear-gradient(135deg, #818cf8, #22d3ee, #a78bfa);
    --nav-bg: rgba(15, 23, 42, 0.85);
    --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --bg-light-alt: #162032;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

::selection {
    background-color: var(--primary);
    color: #ffffff;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-weight: 400;
    line-height: 1.7;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.3;
}

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

a:hover {
    color: var(--primary-dark);
}

/* ==========================================
   PRELOADER
   ========================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--card-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================
   NAVBAR
   ========================================== */
.navbar {
    background-color: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--nav-shadow);
    padding: 12px 0;
    transition: all var(--transition);
    border-bottom: 1px solid var(--card-border);
}

.navbar.scrolled {
    padding: 8px 0;
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.navbar-brand:hover {
    opacity: 0.85;
}

.nav-link {
    color: var(--text-muted) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 8px 16px !important;
    border-radius: 8px;
    transition: all var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary) !important;
    background-color: var(--primary-glow);
}

.nav-link.active {
    font-weight: 600;
}

#theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    cursor: pointer;
}

#theme-toggle:hover {
    background: var(--primary-glow);
    color: var(--primary);
    border-color: var(--primary);
    transform: rotate(15deg);
}

.navbar-toggler {
    border: 1px solid var(--card-border);
    padding: 6px 10px;
    border-radius: 10px;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.navbar-toggler-icon {
    filter: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%236366f1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ==========================================
   SECTION GLOBAL STYLES
   ========================================== */
.section-padding {
    padding: 100px 0;
}

.bg-light-alt {
    background-color: var(--bg-light-alt);
    transition: background-color var(--transition);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-header .section-line {
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 0 auto;
}

.section-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 16px auto 0;
    font-size: 1.05rem;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================
   SCROLL REVEAL ANIMATIONS
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

/* ==========================================
   HERO SECTION
   ========================================== */
#home {
    position: relative;
    overflow: hidden;
    background: var(--bg-color);
}

.hero-bg-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-bg-decoration .circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.hero-bg-decoration .circle-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -200px;
    right: -100px;
    animation: float-slow 8s ease-in-out infinite;
}

.hero-bg-decoration .circle-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -150px;
    left: -100px;
    animation: float-slow 10s ease-in-out infinite reverse;
}

.hero-bg-decoration .circle-3 {
    width: 250px;
    height: 250px;
    background: #8b5cf6;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float-slow 12s ease-in-out infinite;
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-greeting {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-glow);
    padding: 6px 20px;
    border-radius: 50px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    min-height: 40px;
}

.hero-title .typed-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title .cursor {
    display: inline-block;
    width: 3px;
    height: 1.5rem;
    background: var(--primary);
    margin-left: 2px;
    animation: blink 1s step-end infinite;
    vertical-align: middle;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 550px;
    margin: 0 auto 32px;
    line-height: 1.8;
}

.hero-buttons .btn {
    padding: 12px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
}

.btn-gradient {
    background: var(--gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
    color: #ffffff;
}

.btn-outline-modern {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-modern:hover {
    background: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.hero-social {
    margin-top: 40px;
}

.hero-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    margin: 0 6px;
    font-size: 1.15rem;
    transition: all var(--transition);
    background: var(--card-bg);
}

.hero-social a:hover {
    color: #ffffff;
    background: var(--gradient);
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about-image-wrapper {
    position: relative;
    display: inline-block;
}

.about-image-wrapper img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition);
    width: 100%;
    max-width: 350px;
}

.about-image-wrapper::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    max-width: 350px;
    border: 3px solid var(--primary);
    border-radius: var(--border-radius);
    top: 12px;
    left: 12px;
    z-index: -1;
    transition: all var(--transition);
    opacity: 0.3;
}

.about-image-wrapper:hover img {
    transform: translate(-4px, -4px);
}

.about-image-wrapper:hover::after {
    opacity: 0.6;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 1rem;
}

.about-info-list {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
}

.about-info-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.about-info-list li:last-child {
    border-bottom: none;
}

.about-info-list li i {
    color: var(--primary);
    width: 20px;
    text-align: center;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.stat-item {
    text-align: center;
    padding: 20px 12px;
    background: var(--card-bg);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--card-border);
    transition: all var(--transition);
}

.stat-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* ==========================================
   EDUCATION TIMELINE
   ========================================== */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient);
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: 50px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    padding-left: 50px;
    margin-left: 50%;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    top: 20px;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border: 4px solid var(--bg-color);
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 0 4px var(--primary-glow);
    transition: all var(--transition);
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -9px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -9px;
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.4);
    box-shadow: 0 0 0 8px var(--primary-glow);
}

.timeline-content .card {
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--card-border);
    transition: all var(--transition);
}

.timeline-content .card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.timeline-content .badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 6px 12px;
    border-radius: 50px;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 16px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px !important;
        padding-right: 0 !important;
        text-align: left !important;
        margin-left: 0 !important;
    }

    .timeline-marker {
        left: 7px !important;
        right: auto !important;
    }
}

/* ==========================================
   SKILLS SECTION
   ========================================== */
.skill-category-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category-title i {
    color: var(--primary);
    font-size: 1.1rem;
}

.skill-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
    cursor: default;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.skill-card i {
    transition: transform var(--transition);
}

.skill-card:hover i {
    transform: scale(1.15);
}

.skill-card .small {
    font-weight: 500;
    color: var(--text-color);
}

/* Compact sizing for Technical Skills blocks */
#skills .skill-card {
    padding: 0.65rem 0.55rem !important;
}

#skills .skill-card i.fa-2x {
    font-size: 1.45rem !important;
    margin-bottom: 0.4rem !important;
}

#skills .skill-card .small {
    font-size: 0.78rem;
}

/* Core concepts as tags */
.concept-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    transition: all var(--transition);
    margin: 4px;
}

.concept-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
    transform: translateY(-2px);
}

.concept-tag i {
    color: var(--primary);
    font-size: 0.7rem;
}

/* ==========================================
   COMPETITIVE PROGRAMMING
   ========================================== */
.cp-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 28px;
    height: 100%;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.cp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity var(--transition);
}

.cp-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.cp-card .platform-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light-alt);
    border: 1px solid var(--card-border);
    margin-bottom: 16px;
}

.cp-card .platform-logo {
    width: 30px;
    height: 30px;
    object-fit: contain;
    display: block;
}

.organization-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
    display: block;
}


.cp-card h5 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.cp-card .cp-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--card-border);
    font-size: 0.88rem;
}

.cp-card .cp-stat:last-child {
    border-bottom: none;
}

.cp-card .cp-stat-label {
    color: var(--text-muted);
    font-weight: 500;
}

.cp-card .cp-stat-value {
    font-weight: 700;
    color: var(--primary);
}

.cp-card .profile-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    transition: all var(--transition);
}

.cp-card .profile-link:hover {
    gap: 10px;
}

/* ==========================================
   EXPERIENCE SECTION
   ========================================== */
.experience-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--accent);
}

.experience-card .exp-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.2rem;
    color: var(--primary);
    transition: all var(--transition);
}

.experience-card:hover .exp-icon {
    background: var(--gradient);
    color: #ffffff;
}

.experience-card h5 {
    font-size: 1.05rem;
    font-weight: 700;
}

.experience-card h6 {
    font-size: 0.88rem;
    color: var(--primary);
    font-weight: 600;
}

.experience-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================
   PROJECTS SECTION
   ========================================== */
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.card-img-top-wrapper {
    overflow: hidden;
    height: 200px;
    position: relative;
}

.card-img-top-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover .card-img-top-wrapper::after {
    opacity: 1;
}

.card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .card-img-top {
    transform: scale(1.08);
}

.project-card .card-body {
    padding: 24px;
}

.project-card .card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.project-card .card-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.project-card .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 12px 0 16px;
}

.tech-tag {
    padding: 3px 10px;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 50px;
    background: var(--primary-glow);
    color: var(--primary);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.project-card .project-links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.project-links .btn {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all var(--transition);
}

.project-links .btn:hover {
    transform: translateY(-2px);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 40px;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
}

.contact-info-item .icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-info-item h6 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 2px;
}

.contact-info-item p {
    font-weight: 600;
    margin: 0;
    font-size: 0.95rem;
}

.form-control {
    background: var(--bg-color);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    padding: 14px 18px;
    font-size: 0.95rem;
    color: var(--text-color);
    transition: all var(--transition);
}

.form-control:focus {
    background: var(--bg-color);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
    color: var(--text-color);
}

.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

[data-theme="dark"] .form-control {
    background-color: var(--bg-secondary);
    border-color: var(--card-border);
    color: var(--text-color);
}

[data-theme="dark"] .form-control:focus {
    background-color: var(--bg-secondary);
    color: var(--text-color);
}

.btn-submit {
    background: var(--gradient);
    color: #ffffff;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-submit:hover::before {
    left: 100%;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
    color: #ffffff;
}

/* ==========================================
   FOOTER
   ========================================== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--card-border);
    padding: 40px 0;
}

.footer-brand {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    margin: 0 4px;
    transition: all var(--transition);
}

.footer-social a:hover {
    color: #ffffff;
    background: var(--gradient);
    border-color: transparent;
    transform: translateY(-3px);
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: var(--gradient);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    border: none;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

/* ==========================================
   UTILITY & RESPONSIVE
   ========================================== */
.card {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
}

/* Social Icons (legacy support) */
.social-icons a {
    color: var(--text-color);
    font-size: 1.5rem;
    margin: 0 10px;
    transition: color var(--transition);
}

.social-icons a:hover {
    color: var(--primary);
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.2rem;
    }
    
    .section-padding {
        padding: 70px 0;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .about-image-wrapper {
        text-align: center;
        margin-bottom: 30px;
    }

    .about-image-wrapper img {
        max-width: 260px;
    }

    .about-image-wrapper::after {
        max-width: 260px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .contact-card {
        padding: 24px;
    }
}

@media (max-width: 576px) {
    .hero-buttons .btn {
        padding: 10px 24px;
        font-size: 0.88rem;
    }
    
    .hero-social a {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }

    .nav-link {
        padding: 6px 12px !important;
        font-size: 0.85rem;
    }
}

/* ==========================================
   ANIMATION DELAYS FOR STAGGERED REVEALS
   ========================================== */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }