:root {
    --bg-dark: #07070a;
    --text-main: #f0f0f5;
    --text-muted: #8b8b9e;
    --accent-blue: #00f2fe;
    --accent-purple: #4facfe;
    --glass-bg: rgba(18, 18, 25, 0.4);
    --glass-border: rgba(255, 255, 255, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
}

#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.app-container {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header & Nav */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    margin-bottom: 4rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s ease;
}

.logo-container:hover {
    transform: scale(1.05);
}

.logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.logo-text {
    font-weight: 800;
    font-size: 1.3rem;
    background: linear-gradient(to right, var(--text-main), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1.5px;
}

nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.1);
}

.nav-btn.btn-primary {
    background: linear-gradient(45deg, var(--accent-purple), var(--accent-blue));
    color: #fff;
    font-weight: 800;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
    margin-left: 0.5rem;
}

.nav-btn.btn-primary:hover {
    box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
    transform: translateY(-2px);
    color: #fff;
}

/* Main Content */
main {
    flex-grow: 1;
    position: relative;
}

.content-section {
    display: none;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Typography & Hero */
h1 {
    font-size: 4.8rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(to right, #fff, var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
}

.hero {
    margin-top: 5vh;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
}

.cta-main, .cta-secondary {
    padding: 1rem 2.2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cta-main {
    background: linear-gradient(45deg, var(--accent-purple), var(--accent-blue));
    color: #fff;
    border: none;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4);
}

.cta-main:hover {
    box-shadow: 0 8px 30px rgba(0, 242, 254, 0.6);
    transform: translateY(-3px) scale(1.02);
}

.cta-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 242, 254, 0.1);
    transform: translateY(-3px);
}

/* Grid & Cards */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    padding: 2.5rem;
    border-radius: 20px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s, box-shadow 0.4s;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.card:hover {
    transform: translateY(-10px);
    border-color: rgba(79, 172, 254, 0.4);
    box-shadow: 0 10px 40px rgba(0, 242, 254, 0.15);
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* About Section */
.about-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    padding: 4rem 3rem;
    border-radius: 20px;
    text-align: center;
}

.about-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-item .number {
    font-size: 3.5rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 0 20px rgba(0, 242, 254, 0.5);
}

.stat-item .label {
    color: var(--accent-blue);
    font-weight: 600;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact Form */
.contact-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    padding: 3rem;
    border-radius: 20px;
}

.contact-card p {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: white;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px rgba(79, 172, 254, 0.2);
    background: rgba(0, 0, 0, 0.8);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to right, var(--accent-blue), var(--accent-purple));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s;
}

.submit-btn:hover {
    box-shadow: 0 5px 20px rgba(79, 172, 254, 0.5);
    transform: translateY(-2px);
}

/* Glitch effect for heading */
.glitch-text {
    position: relative;
    display: inline-block;
    color: #fff;
}
.glitch-text::before, .glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}
.glitch-text::before {
    left: 2px;
    text-shadow: -2px 0 var(--accent-purple);
    clip: rect(24px, 550px, 90px, 0);
    animation: glitch-anim-2 3s infinite linear alternate-reverse;
}
.glitch-text::after {
    left: -2px;
    text-shadow: -2px 0 var(--accent-blue);
    clip: rect(85px, 550px, 140px, 0);
    animation: glitch-anim 2.5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(22px, 9999px, 88px, 0); }
    5% { clip: rect(78px, 9999px, 13px, 0); }
    10% { clip: rect(33px, 9999px, 66px, 0); }
    15% { clip: rect(10px, 9999px, 99px, 0); }
    20% { clip: rect(55px, 9999px, 33px, 0); }
    100% { clip: rect(22px, 9999px, 88px, 0); }
}
@keyframes glitch-anim-2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    5% { clip: rect(12px, 9999px, 44px, 0); }
    10% { clip: rect(89px, 9999px, 22px, 0); }
    15% { clip: rect(34px, 9999px, 77px, 0); }
    20% { clip: rect(20px, 9999px, 50px, 0); }
    100% { clip: rect(65px, 9999px, 100px, 0); }
}

@media (max-width: 768px) {
    h1 { font-size: 2.8rem; }
    header { flex-direction: column; gap: 1rem; border-radius: 20px; padding: 1.5rem; }
    nav { flex-wrap: wrap; justify-content: center; }
    .stats { flex-direction: column; gap: 2rem; }
    .cta-group { flex-direction: column; }
}