/* --- CSS Variables --- */
:root {
    --primary: #6C63FF;
    --secondary: #2A2A72;
    --accent: #34A853;
    --nav-scroll-bg: #7979dd;
    --bg-body: #ffffff;
    --bg-card: #ffffff;
    --text-main: #2c3e50;
    --text-muted: #6c757d;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --border-color: #eee;

    /* Real GitHub Green (Light Mode) */
    --git-empty: #ebedf0;
    --git-l1: #9be9a8;
    --git-l2: #40c463;
    --git-l3: #30a14e;
    --git-l4: #216e39;
}

body.dark-mode {
    --primary: #a29bfe;
    --secondary: #ffffff;
    --nav-scroll-bg: #1a1a40;
    --bg-body: #0d1117;
    --bg-card: #161b22;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --border-color: #30363d;

    /* Real GitHub Green (Dark Mode) */
    --git-empty: #2d333b;
    --git-l1: #0e4429;
    --git-l2: #006d32;
    --git-l3: #26a641;
    --git-l4: #39d353;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    transition: background 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-15px);
    }

    100% {
        transform: translateY(0px);
    }
}

/* --- Navigation --- */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: transparent;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.4s ease-in-out;
}

nav.scrolled {
    background-color: var(--nav-scroll-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    padding: 0.8rem 5%;
}

.nav-left i {
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: 0.3s;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-icons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-icons i,
.nav-icons a {
    color: var(--secondary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: 0.3s;
    text-decoration: none;
}

body.dark-mode .nav-icons i,
body.dark-mode .nav-icons a {
    color: var(--text-main);
}

.nav-icons i:hover {
    color: var(--primary);
    transform: scale(1.2);
}

nav.scrolled .nav-links a,
nav.scrolled .nav-icons i,
nav.scrolled .nav-icons a,
nav.scrolled .nav-left i {
    color: #ffffff !important;
}

nav.scrolled .nav-links a:hover,
nav.scrolled .nav-icons i:hover {
    color: #a29bfe !important;
}

/* --- Hero Section --- */
.hero-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5rem 10%;
    gap: 4rem;
    min-height: 85vh;
}

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

.hero-text h2 {
    font-size: 1.2rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.hero-text h1 {
    font-size: 3.5rem;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    max-width: 600px;
}

.btn-resume {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-top: 1rem;
}

.btn-resume:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(108, 99, 255, 0.5);
}

.stats-row {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-circle {
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #6C63FF, #8ca6db);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 0.5rem;
    box-shadow: 0 4px 10px rgba(108, 99, 255, 0.3);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--secondary);
    font-weight: 700;
    text-transform: uppercase;
}

body.dark-mode .stat-label {
    color: var(--text-main);
}

.hero-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
}

.avatar-circle {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: #E3F2FD;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    animation: float 6s ease-in-out infinite;
    border: 5px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

body.dark-mode .avatar-circle {
    background: #1f6feb;
    border-color: rgba(255, 255, 255, 0.1);
}

.avatar-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.section-container {
    padding: 5rem 10%;
}

.section-title {
    font-size: 2.2rem;
    color: var(--secondary);
    margin-bottom: 3rem;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin-top: 5px;
    border-radius: 2px;
}

body.dark-mode .section-title {
    color: var(--text-main);
}

/* --- Skills --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: 0.3s;
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.skill-name {
    font-weight: 600;
    color: var(--text-main);
}

/* --- Projects --- */
.project-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.project-card {
    display: flex;
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.project-content {
    padding: 2.5rem;
    flex: 2;
    min-width: 300px;
}

.project-img-container {
    flex: 1;
    min-width: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    transition: background 0.3s;
}

body.dark-mode .project-img-container {
    background-color: #21262d !important;
}

.project-img-icon {
    font-size: 6rem;
    color: #6C63FF;
}

.p-date {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    display: block;
}

.p-title {
    font-size: 1.8rem;
    color: var(--text-main);
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.p-desc {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.tech-tags {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tag {
    background: rgba(108, 99, 255, 0.1);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.btn-view {
    padding: 0.8rem 2rem;
    border: 2px solid var(--secondary);
    background: transparent;
    color: var(--secondary);
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: 0.3s;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

body.dark-mode .btn-view {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-view:hover {
    background: var(--secondary);
    color: white;
}

body.dark-mode .btn-view:hover {
    background: var(--primary);
    color: #000;
}

/* --- NATIVE GITHUB GRAPH UI --- */
.github-section {
    padding: 4rem 10%;
    text-align: center;
}

.github-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    max-width: 1000px;
    margin: 3rem auto;
}

.calendar-wrapper {
    flex: 1;
    padding: 2rem;
    border-radius: 15px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    color: var(--text-main);
    overflow: hidden;
    min-width: 0;
    position: relative;
}

.calendar-scroll {
    overflow-x: auto;
    padding-bottom: 15px;
}

.calendar {
    width: 100%;
    overflow-x: auto;
}

.calendar svg {
    width: 100%;
}

.calendar .sr-only {
    display: none !important;
}

.calendar h2 {
    display: none !important;
}

.calendar .float-left {
    display: none !important;
}

.calendar-scroll {
    overflow-x: auto;
    padding: 10px;
}

.calendar a[href*="year"] {
    display: none !important;
}

.calendar .sr-only {
    display: none !important;
}

.calendar h2 {
    display: none !important;
}

/* Real-Time Commit Box */
.latest-activity-box {
    background: rgba(108, 99, 255, 0.05);
    border: 1px solid rgba(108, 99, 255, 0.2);
    border-left: 4px solid var(--primary);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: left;
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Github Year Filter */
.year-list {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.year-btn {
    padding: 8px 18px;
    border: none;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
}

.year-btn:hover {
    background: var(--primary);
    color: white;
}

.year-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* --- Modals & Tooltips --- */
.git-custom-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10000;
    white-space: nowrap;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.git-custom-tooltip.show {
    opacity: 1;
}

.git-custom-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0, 0, 0, 0.85) transparent transparent transparent;
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    opacity: 1;
}

.modal-content {
    background-color: var(--bg-card);
    margin: 5vh auto;
    padding: 3rem;
    width: 90%;
    max-width: 800px;
    border-radius: 20px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    color: var(--text-main);
    transform: translateY(50px);
    transition: transform 0.3s;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.close-btn {
    position: absolute;
    right: 25px;
    top: 25px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: 0.3s;
}

.close-btn:hover {
    color: var(--primary);
    transform: rotate(90deg);
}

.modal h3 {
    color: var(--secondary);
    margin: 1.5rem 0 0.5rem;
    border-left: 4px solid var(--primary);
    padding-left: 10px;
}

body.dark-mode .modal h3 {
    color: var(--text-main);
}

.modal ul {
    margin-left: 20px;
}

footer {
    text-align: center;
    padding: 1rem;
    margin-bottom: -5rem;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
}

/* Media Queries */
@media (max-width: 768px) {
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
        padding: 2rem 5%;
    }

    .nav-links {
        display: none;
    }

    .project-card {
        flex-direction: column-reverse;
    }

    .github-layout {
        flex-direction: column;
        align-items: center;
    }

    .year-list {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding-top: 1rem;
        width: 100%;
    }

    .year-btn:hover,
    .year-btn.active {
        transform: translateY(-3px);
    }

    .calendar-wrapper {
        padding: 1rem;
        width: 100%;
    }
}