/* ============================================
   Md Sakibul Islam — Portfolio Stylesheet
   Cool Blue-White Light Theme with Blue Accents
   ============================================ */

/* ===== CSS Custom Properties ===== */
:root {
    /* Colors — Royal Electric Blue Theme */
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.75);
    --border-glass: rgba(29, 78, 216, 0.16);

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;

    --accent-start: #1d4ed8;
    --accent-mid: #2563eb;
    --accent-end: #0284c7;
    --gradient-primary: linear-gradient(135deg, var(--accent-start), var(--accent-mid));
    --gradient-hover: linear-gradient(135deg, var(--accent-mid), var(--accent-end));
    --gradient-text: linear-gradient(135deg, #1d4ed8, #2563eb, #0284c7);

    --glow-blue: rgba(29, 78, 216, 0.25);
    --glow-cyan: rgba(2, 132, 199, 0.2);
    --glow-sky: rgba(37, 99, 235, 0.18);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    --container-padding: 0 24px;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50%;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent-start);
    color: #fff;
}

::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #e2e8f0;
}
::-webkit-scrollbar-thumb {
    background: var(--accent-start);
    border-radius: 3px;
}

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

ul, ol {
    list-style: none;
}

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

/* ===== Cursor Glow ===== */
.cursor-glow {
    position: fixed;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow-blue), transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    opacity: 0.25;
    transition: opacity 0.3s;
}

/* ===== Particle Canvas ===== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Glass Card Mixin ===== */
.glass-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.glass-card:hover {
    border-color: rgba(37, 99, 235, 0.2);
    box-shadow: 0 8px 32px var(--glow-blue), 0 4px 16px rgba(0,0,0,0.06);
    transform: translateY(-4px);
}

/* ===== Gradient Text ===== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px var(--glow-blue);
}

.btn-primary:hover {
    box-shadow: 0 8px 35px var(--glow-blue);
    transform: translateY(-3px);
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-hover);
    opacity: 0;
    transition: var(--transition-normal);
    border-radius: inherit;
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-primary span,
.btn-primary i {
    position: relative;
    z-index: 2;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-glass);
}

.btn-outline:hover {
    border-color: var(--accent-start);
    background: rgba(37, 99, 235, 0.08);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Section Commons ===== */
section {
    position: relative;
    z-index: 2;
}

.section-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--section-padding);
    padding-left: 24px;
    padding-right: 24px;
}

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.15);
    color: var(--accent-start);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
    padding: 10px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-accent {
    color: var(--accent-start);
    font-weight: 800;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-start);
    background: rgba(37, 99, 235, 0.08);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.88rem;
    box-shadow: 0 4px 15px var(--glow-blue);
    transition: var(--transition-normal);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--glow-blue);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

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

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-start);
    top: -200px;
    left: -100px;
    animation: float-shape 20s infinite ease-in-out;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-end);
    bottom: -150px;
    right: -100px;
    animation: float-shape 18s infinite ease-in-out reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: #0ea5e9;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float-shape 22s infinite ease-in-out 2s;
}

@keyframes float-shape {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.1); }
    50% { transform: translate(-20px, 30px) scale(0.95); }
    75% { transform: translate(40px, 20px) scale(1.05); }
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-xl);
    font-size: 0.82rem;
    color: #16a34a;
    margin-bottom: 24px;
    animation: fadeInUp 1s ease 0.2s both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 16px;
    animation: fadeInUp 1s ease 0.4s both;
    min-height: 40px;
}

.typing-cursor {
    display: inline-block;
    color: var(--accent-mid);
    font-weight: 300;
    animation: blink 1s step-end infinite;
}

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

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.6s both;
}

.hero-socials {
    display: flex;
    gap: 12px;
    animation: fadeInUp 1s ease 0.7s both;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.social-link:hover {
    color: #fff;
    border-color: var(--accent-mid);
    background: var(--gradient-primary);
    transform: translateY(-4px);
    box-shadow: 0 4px 15px var(--glow-blue);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-image-wrapper {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
}

.ring-1 {
    width: 100%;
    height: 100%;
    border-color: rgba(37, 99, 235, 0.2);
    animation: ring-rotate 20s linear infinite;
}

.ring-2 {
    width: 85%;
    height: 85%;
    border-color: rgba(6, 182, 212, 0.18);
    border-style: dashed;
    animation: ring-rotate 25s linear infinite reverse;
}

.ring-3 {
    width: 70%;
    height: 70%;
    border-color: rgba(14, 165, 233, 0.15);
    animation: ring-rotate 30s linear infinite;
}

@keyframes ring-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-profile-box {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.12), rgba(2, 132, 199, 0.18));
    border: 3px solid rgba(29, 78, 216, 0.3);
    position: relative;
    z-index: 2;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    box-shadow: 0 15px 40px rgba(29, 78, 216, 0.25), 0 0 60px rgba(2, 132, 199, 0.2);
    transition: var(--transition-normal);
}

.hero-profile-box:hover {
    border-color: var(--accent-mid);
    box-shadow: 0 20px 50px rgba(29, 78, 216, 0.35), 0 0 80px rgba(2, 132, 199, 0.3);
    transform: translateY(-4px);
}

.hero-profile-img {
    width: 92%;
    height: 98%;
    object-fit: contain;
    object-position: bottom center;
    filter: drop-shadow(0 10px 15px rgba(15, 23, 42, 0.2));
    transition: transform 0.4s ease;
}

.hero-profile-box:hover .hero-profile-img {
    transform: scale(1.06);
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(59, 130, 246, 0.12);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.floating-card i {
    font-size: 1.1rem;
}

.card-1 {
    top: 10%;
    right: -10%;
    animation: float-card 6s ease-in-out infinite;
}
.card-1 i { color: #4285f4; }

.card-2 {
    bottom: 20%;
    left: -5%;
    animation: float-card 7s ease-in-out infinite 1s;
}
.card-2 i { color: #1877f2; }

.card-3 {
    bottom: 5%;
    right: 5%;
    animation: float-card 5s ease-in-out infinite 2s;
}
.card-3 i { color: #22c55e; }

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 2;
    animation: fadeInUp 1s ease 1.2s both;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-mid);
    border-radius: 2px;
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(10px); opacity: 0; }
}

.scroll-indicator span {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    gap: 40px;
}

.about-text-box {
    padding: 32px;
    margin-bottom: 32px;
}

.about-text-box h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-text-box p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.8;
}

.about-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.info-card {
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-card i {
    font-size: 1.5rem;
    color: var(--accent-mid);
    margin-top: 4px;
}

.info-card h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.info-card p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.info-card span {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats {
    padding: 80px 0;
    position: relative;
    z-index: 2;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-tertiary));
}

.stats-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    padding: 32px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

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

.stat-icon {
    font-size: 1.8rem;
    color: var(--accent-mid);
    margin-bottom: 16px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-mid);
    display: inline;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.skill-category {
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.skill-category::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-slow);
}

.skill-category:hover::after {
    transform: scaleX(1);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.skill-cat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    font-size: 1.2rem;
    color: #fff;
}

.skill-category-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-xl);
    background: rgba(37, 99, 235, 0.06);
    border: 1px solid rgba(37, 99, 235, 0.1);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.skill-item:hover {
    background: rgba(37, 99, 235, 0.12);
    color: var(--accent-start);
    border-color: rgba(37, 99, 235, 0.25);
    transform: translateY(-2px);
}

.skill-item i {
    color: var(--accent-start);
    font-size: 0.9rem;
}

/* ============================================
   EXPERIENCE / TIMELINE
   ============================================ */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-start), var(--accent-end), transparent);
}

.timeline-item {
    display: flex;
    margin-bottom: 48px;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    animation: timeline-appear 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.3s; }
.timeline-item:nth-child(3) { animation-delay: 0.5s; }
.timeline-item:nth-child(4) { animation-delay: 0.7s; }

@keyframes timeline-appear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.marker-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 0 20px var(--glow-blue);
    position: relative;
}

.marker-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(37, 99, 235, 0.25);
    animation: pulse-dot 2s infinite;
}

.timeline-content {
    width: calc(50% - 40px);
    padding: 28px;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
}

.timeline-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.timeline-date {
    font-size: 0.82rem;
    color: var(--accent-mid);
    font-weight: 600;
}

.timeline-badge {
    padding: 3px 10px;
    border-radius: var(--radius-xl);
    background: rgba(37, 99, 235, 0.1);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-start);
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.timeline-content h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 16px;
}

.timeline-content h4 a {
    color: var(--accent-end);
}

.timeline-content h4 a:hover {
    text-decoration: underline;
}

.timeline-content h4 i {
    margin-right: 6px;
    color: var(--text-muted);
}

.timeline-achievements {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.timeline-achievements li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-achievements li i {
    color: #22c55e;
    margin-top: 4px;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.freelance-stores {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.store-tag {
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.18);
    font-size: 0.78rem;
    font-weight: 500;
    color: #0891b2;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    padding: 36px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.service-number {
    position: absolute;
    top: 16px;
    right: 20px;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(37, 99, 235, 0.07);
    line-height: 1;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    font-size: 1.4rem;
    color: #fff;
    margin-bottom: 20px;
    transition: var(--transition-normal);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    color: #facc15;
    font-size: 0.9rem;
}

.testimonial-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    font-style: italic;
    flex: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 16px;
    border-top: 1px solid var(--border-glass);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: #fff;
    flex-shrink: 0;
}

.testimonial-author h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-info-card {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-info-card i {
    font-size: 1.3rem;
    color: var(--accent-mid);
    width: 24px;
    text-align: center;
}

.contact-info-card h4 {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-info-card a {
    color: var(--text-primary);
    font-weight: 500;
}

.contact-info-card a:hover {
    color: var(--accent-mid);
}

.contact-socials {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.contact-social-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition-normal);
}

.contact-social-btn:hover {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 20px 14px 48px;
    background: rgba(240, 244, 248, 0.8);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-mid);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: #fff;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group i {
    position: absolute;
    left: 18px;
    top: 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.form-group:focus-within i {
    color: var(--accent-mid);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-glass);
    position: relative;
    z-index: 2;
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 60px 24px 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-glass);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 340px;
    line-height: 1.7;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.88rem;
    padding: 6px 0;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-mid);
    padding-left: 6px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.footer-socials a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: var(--transition-normal);
}

.footer-socials a:hover {
    color: #fff;
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-2px);
}

/* ============================================
   SCROLL TO TOP
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px var(--glow-blue);
}

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

.scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--glow-blue);
}

/* ============================================
   SCROLL ANIMATION CLASSES
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

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

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .hero-visual {
        order: -1;
    }

    .hero-image-wrapper {
        width: 260px;
        height: 260px;
    }

    .hero-profile-box {
        width: 200px;
        height: 200px;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

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

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Timeline responsive */
    .timeline::before {
        left: 20px;
    }

    .timeline-marker {
        left: 20px;
    }

    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 4px;
        transition: var(--transition-slow);
        z-index: 999;
        border-left: 1px solid rgba(59, 130, 246, 0.1);
        box-shadow: -4px 0 20px rgba(0,0,0,0.08);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 14px 16px;
        font-size: 1rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .hero-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
    }

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

    .stats-container {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .floating-card {
        display: none;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-image-wrapper {
        width: 200px;
        height: 200px;
    }

    .hero-profile-box {
        width: 150px;
        height: 150px;
    }

    .placeholder-label {
        font-size: 1.5rem;
    }

    .stats-container {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.8rem;
    }
}