/* =========================================
   1. CSS VARIABLES & THEME SETUP
   ========================================= */
:root {
    /* Light Mode Palette */
    --bg-body: #F8FAFC;
    --bg-nav: rgba(255, 255, 255, 0.85);
    --bg-card: #FFFFFF;
    --bg-card-hover: #F1F5F9;

    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-accent: #00BF63;
    /* Sharp Green */

    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --hero-gradient: radial-gradient(circle at top right, rgba(0, 191, 99, 0.1), transparent 40%);
}

[data-theme="dark"] {
    /* Dark Mode Palette */
    --bg-body: #0B1120;
    /* Deep Slate */
    --bg-nav: rgba(11, 17, 32, 0.85);
    --bg-card: #1E293B;
    --bg-card-hover: #334155;

    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-accent: #3DDC84;
    /* Android Green */

    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);

    --hero-gradient: radial-gradient(circle at top right, rgba(61, 220, 132, 0.15), transparent 40%);
}

/* =========================================
   2. VIEW TRANSITIONS (Animations)
   ========================================= */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}

::view-transition-new(root) {
    z-index: 9999;
}

::view-transition-old(root) {
    z-index: 1;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
}

/* =========================================
   4. NAVBAR & NAVIGATION
   ========================================= */
header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 72px;
    background-color: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

nav {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: inline-block;
    background-color: var(--text-accent);
    -webkit-mask: url('icon.svg') no-repeat center;
    -webkit-mask-size: contain;
    mask: url('icon.svg') no-repeat center;
    mask-size: contain;
}

.logo span {
    color: var(--text-accent);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--text-accent);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-link:hover::after {
    width: 100%;
}

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

.theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: hidden;
}

.theme-btn:hover {
    color: var(--text-accent);
    border-color: var(--text-accent);
    background-color: rgba(61, 220, 132, 0.1);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

/* =========================================
   5. HERO SECTION
   ========================================= */
#hero {
    min-height: 100vh;
    padding-top: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background-image: var(--hero-gradient);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding-bottom: 60px;

    position: relative;
    z-index: 1;
    background: radial-gradient(circle at center, var(--bg-body) 0%, transparent 70%);
    padding: 40px;
}

#hero-canvas, #fluid-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: auto;
    /* Niche se fade effect (smooth blend ke liye) */
    -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 75%, rgba(0, 0, 0, 0) 100%);
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 75%, rgba(0, 0, 0, 0) 100%);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

p.hero-text {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    min-height: 60px;
    display: block;
}

.btn-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--text-accent);
    color: #0f172a;
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(61, 220, 132, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--text-primary);
    background-color: var(--bg-card-hover);
}

/* =========================================
   6. SECTION STYLES (Common)
   ========================================= */
section {
    padding: 100px 0;
    scroll-margin-top: 80px;
}

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

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* =========================================
   7. ABOUT SECTION (Custom Mask Effect)
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.7;
}

/* Image Container with Glow Hover */
.about-image {
    position: relative;
    border-radius: 24px;
    max-width: 420px;
    margin: 0 auto;
    /* Wrapper handles transform so border + image move together */
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    display: block;
    object-fit: cover;
}

/* Hover effect on wrapper */
.about-image:hover {
    transform: translateY(-6px);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(61, 220, 132, 0.15);
}

/* Glowing Border Effect using Mask */
.about-image::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 24px;
    padding: 5px;
    pointer-events: none;

    background: radial-gradient(120px circle at var(--x, 50%) var(--y, 50%),
            var(--text-accent),
            transparent 300%);

    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask-composite: exclude;

    opacity: 0;
    transition: opacity 0.3s ease;
}

.about-image:hover::after {
    opacity: 1;
}

@media (hover: none) {
    .about-image::after {
        opacity: 0.6;
        padding: 10px;
        background: linear-gradient(135deg, transparent, var(--text-accent), transparent);
    }
}


/* =========================
   SCROLL ANIMATION SYSTEM
   ========================= */

/* default hidden state */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    will-change: opacity, transform;
}

/* visible state */
[data-animate].show {
    opacity: 1;
    transform: translateY(0);
}

/* image variation */
[data-animate="zoom"] {
    transform: scale(0.9);
}

[data-animate="zoom"].show {
    transform: scale(1);
}

/* =========================================
   8. SKILLS GRID
   ========================================= */
.grid-skills {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 20px;
}

.skill-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    transition: all 0.3s ease;
    cursor: default;
}

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

.skill-icon {
    width: 48px;
    height: 48px;
    fill: var(--text-primary);
    transition: fill 0.3s ease;
}

.skill-card:hover .skill-icon {
    fill: var(--text-accent);
}

/* =========================================
   9. APPS & PROJECTS (Restored for older pages)
   ========================================= */
.grid-apps,
.grid-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.app-card,
.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
}

.app-card:hover,
.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--text-accent);
    box-shadow: var(--shadow-lg);
}

.app-preview {
    height: 160px;
    background: linear-gradient(135deg, var(--bg-card-hover), var(--bg-body));
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.project-header {
    height: 160px;
    background: linear-gradient(135deg, var(--bg-card-hover) 0%, var(--bg-body) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.app-preview svg,
.project-header svg {
    width: 50px;
    height: 50px;
    fill: var(--text-secondary);
    opacity: 0.6;
}

.app-body,
.project-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-title,
.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.app-tags,
.project-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-weight: 500;
}

.app-desc,
.project-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.app-links,
.project-link {
    display: flex;
    gap: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: auto;
    color: var(--text-accent);
    align-items: center;
}

.link-accent,
.project-link {
    color: var(--text-accent);
    display: flex;
    align-items: center;
    gap: 4px;
}

.link-muted {
    color: var(--text-secondary);
}

.link-accent:hover,
.project-link:hover {
    text-decoration: underline;
    gap: 8px;
}


/* =========================================
   10. CONTACT & FOOTER
   ========================================= */
#contact {
    background-color: var(--bg-card-hover);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.email-link {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 20px 0 40px 0;
    display: inline-block;
    word-break: break-all;
}

.email-link:hover {
    color: var(--text-accent);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.social-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    min-width: 100px;
}

.social-icon-box {
    width: 64px;
    height: 64px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icon-box svg {
    width: 32px;
    height: 32px;
    fill: var(--text-primary);
}

.social-btn:hover {
    color: var(--text-primary);
}

.social-btn:hover .social-icon-box {
    transform: translateY(-8px);
    border-color: var(--text-accent);
    box-shadow: var(--shadow-md);
    background-color: var(--bg-card);
}

.social-btn:hover .social-icon-box svg {
    fill: var(--text-accent);
}

footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-body);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.footer-links a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* =========================================
   11. SHARED COMPONENTS (Features, Screenshots & Beta)
   ========================================= */
.btn-glow {
    box-shadow: 0 0 15px var(--text-accent);
    animation: pulseGlow 2s infinite alternate;
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 10px color-mix(in srgb, var(--text-accent) 40%, transparent); }
    100% { box-shadow: 0 0 25px color-mix(in srgb, var(--text-accent) 80%, transparent); }
}

.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    background: color-mix(in srgb, var(--text-accent) 10%, transparent);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-accent);
    margin-bottom: 20px;
    border: 1px solid color-mix(in srgb, var(--text-accent) 20%, transparent);
}

.feature-icon-wrapper svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.screenshot-gallery {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 20px 0 30px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--text-accent) var(--bg-card);
    scroll-snap-type: x mandatory;
}

.screenshot-gallery img {
    height: 400px;
    width: auto;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    scroll-snap-align: center;
    flex-shrink: 0;
    object-fit: cover;
    background: var(--bg-card);
}

/* Tech Grid */
.tech-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)) !important;
    gap: 24px !important;
    margin-top: 30px;
}
.tech-grid .skill-card {
    padding: 20px;
    align-items: flex-start;
    text-align: left;
    height: 100%;
}
.tech-grid .skill-icon {
    margin-bottom: 15px;
}
.tech-grid .skill-card strong {
    font-size: 1.1rem;
    margin-bottom: 8px;
    display: block;
}
.tech-grid .skill-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Beta Form */
.beta-form {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--bg-card);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}
.form-input {
    padding: 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
}
.form-input:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--text-accent) 20%, transparent);
}
.contact-alternatives {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.warning-box {
    background: rgba(255, 193, 7, 0.1);
    border-left: 4px solid #ffc107;
    padding: 16px 20px;
    border-radius: 4px 8px 8px 4px;
    margin-bottom: 24px;
    color: var(--text-primary);
}
.warning-box strong { color: #e6a800; }
.step-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; max-width: 700px; margin-left: auto; margin-right: auto; }
.step-item { display: flex; align-items: flex-start; gap: 16px; background: var(--bg-card); padding: 20px; border-radius: 12px; border: 1px solid var(--border-color); box-shadow: var(--shadow-md); }
.step-number { background: var(--text-accent); color: #000; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 1.1rem; flex-shrink: 0; }
.step-content h4 { margin: 0 0 8px 0; color: var(--text-primary); font-size: 1.2rem; }
.step-content p { margin: 0 0 12px 0; color: var(--text-secondary); line-height: 1.5; }
.step-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* =========================================
   12. MEDIA QUERIES
   ========================================= */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        max-height: 0;
        background-color: var(--bg-body);
        flex-direction: column;
        gap: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-in-out;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        max-height: 400px;
    }

    .nav-link {
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
        display: block;
    }

    .nav-link::after {
        display: none;
    }

    .nav-link:hover {
        background-color: var(--bg-card-hover);
        color: var(--text-accent);
    }

    p.hero-text {
        min-height: 80px;
    }

    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    section {
        padding: 60px 0;
    }

    /* About Stack on Mobile */
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .about-text h3 {
        text-align: center;
    }
}


/* =========================================
   TYPING EFFECT BLINKING CURSOR
   ========================================= */
.typing-text::after {
    content: '|';
    display: inline-block;
    color: var(--text-accent);
    margin-left: 2px;
    animation: blink 0.75s step-end infinite;
}

.typing-text {
    color: var(--text-accent);
    font-weight: 600;
    white-space: nowrap;
}

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