@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

:root {
    --page-bg: #000000;
    --heading-color: #FFFFFF;
    --text-color: #bfeee8;
    --accent-color: #00F6C9;
    --accent-text-color: #00221A;
    --surface-color: #111111;
    --border-color: #333333;
    --header-height: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--page-bg);
    color: var(--text-color);
    font-family: 'Space Mono', monospace;
    padding-top: var(--header-height);
    line-height: 1.7;
}

/* --- CONTACT.HTML STYLE HEADER --- */
.branding {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* IMPROVEMENT: Increased padding from 50px to 80px */
    padding: 0 80px; 
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    color: var(--heading-color);
    font-size: 24px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.5px;
}

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

.title {
    color: var(--text-color);
    font-size: 14px;
    opacity: 0.7;
}

.navigation {
    display: flex;
    /* IMPROVEMENT: Increased gap between links from 30px to 40px */
    gap: 40px; 
    align-items: center;
}

.navigation a {
    color: var(--text-color);
    text-decoration: none;
    /* Retained fix for large screen text size */
    font-size: 18px !important; 
    transition: color 0.3s ease;
    font-weight: 500;
}

.navigation a:hover {
    color: var(--accent-color);
}

/* --- HERO SECTION --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 30px;
    text-align: center;
}

.hero-content {
    max-width: 900px;
}

.hero-content h1 {
    font-size: clamp(40px, 7vw, 72px);
    color: var(--heading-color);
    margin-bottom: 24px;
    line-height: 1.15;
    letter-spacing: -1.5px;
}

.hero-content .subtitle {
    font-size: clamp(18px, 3vw, 24px);
    margin-bottom: 40px;
    opacity: 0.85;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* --- BUTTONS --- */
.cta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.btn {
    padding: 14px 32px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: inline-block;
    cursor: pointer;
}

.btn.primary {
    background-color: var(--accent-color);
    color: var(--accent-text-color);
    border: none;
}

.btn.secondary {
    background-color: var(--surface-color);
    color: var(--heading-color);
    border: 1px solid var(--border-color);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 246, 201, 0.25);
}

/* --- SECTIONS --- */
section {
    padding: 120px 30px;
}

/* NEW: General container styling for pages like About and Features to ensure top spacing and center alignment */
.page-content {
    padding: 120px 30px; 
    max-width: 1200px;
    margin: 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* UPDATED: Combined with .section-title class for pages like features/about/projects */
section h2, .section-title { 
    font-size: clamp(36px, 5vw, 52px);
    color: var(--heading-color);
    margin-bottom: 70px;
    text-align: center;
    letter-spacing: -1px;
    line-height: 1.2;
}

/* --- CARDS --- Enhanced for readability */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 100%;
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 36px 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 220px;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 246, 201, 0.15);
    border-color: var(--accent-color);
}

.card h3 {
    color: var(--heading-color);
    font-size: 22px;
    margin-bottom: 16px;
    line-height: 1.4;
    letter-spacing: -0.3px;
}

.card p {
    opacity: 0.85;
    line-height: 1.75;
    font-size: 15px;
    color: var(--text-color);
}

/* --- FOOTER & RESPONSIVE --- */
.footer {
    padding: 50px 30px;
    text-align: center;
    color: var(--text-color);
    border-top: 1px solid var(--border-color);
    opacity: 0.6;
    font-size: 14px;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    /* FIX: Set z-index higher than the open menu (1001) to keep the X visible */
    z-index: 1002; 
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--heading-color);
    border-radius: 2px;
    transition: all 0.3s ease;
    margin-bottom: 5px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- MOBILE RESPONSIVE STYLES --- */
/* Large screens (1200px and above) */
@media (min-width: 1200px) {
    .cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 36px;
    }
    .card {
        padding: 40px 32px;
    }
}

/* Medium screens (768px to 1199px) */
@media (min-width: 768px) and (max-width: 1199px) {
    .cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    .card {
        padding: 34px 28px;
    }
    .card h3 {
        font-size: 21px;
    }
    .card p {
        font-size: 14px;
    }
}

/* Tablet and below (850px) */
@media (max-width: 850px) {
    :root {
        --header-height: 70px;
    }
    .branding {
        padding: 0 30px;
    }
    .title {
        display: none;
    }
    .navigation {
        display: none;
    }
    .navigation.open {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: var(--page-bg);
        /* UPDATED: Overlay on top of everything else */
        z-index: 1001; 
    }
    .navigation.open a {
        font-size: 24px;
    }
    .nav-toggle {
        display: block;
    }
    section {
        padding: 90px 25px;
    }
    section h2 {
        margin-bottom: 50px;
    }
    .cards {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }
    .card {
        padding: 30px 24px;
        min-height: 200px;
    }
    .card h3 {
        font-size: 20px;
    }
    .card p {
        font-size: 14px;
    }

    /* Prevents background scrolling when navigation is open */
    body.nav-open {
        overflow: hidden;
    }
}

/* Mobile (600px and below) */
@media (max-width: 600px) {
    :root {
        --header-height: 60px;
    }
    body {
        line-height: 1.6;
    }
    .branding {
        padding: 0 20px;
    }
    .logo {
        font-size: 20px;
    }
    .hero {
        padding: 30px 20px;
        min-height: calc(100vh - 60px);
    }
    section {
        padding: 70px 20px;
    }
    section h2 {
        margin-bottom: 40px;
    }
    .cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .card {
        padding: 28px 22px;
        min-height: 180px;
    }
    .card h3 {
        font-size: 19px;
        margin-bottom: 14px;
    }
    .card p {
        font-size: 14px;
        line-height: 1.7;
    }
    .btn {
        padding: 12px 24px;
        font-size: 14px;
        width: 100%;
        text-align: center;
    }
    .cta {
        flex-direction: column;
        width: 100%;
    }
    .footer {
        padding: 40px 20px;
        font-size: 13px;
    }
    /* Adjusted font size for navigation on small mobile */
    .navigation a {
        font-size: 14px !important;
    }
}

/* Small mobile (400px and below) */
@media (max-width: 400px) {
    body {
        line-height: 1.55;
    }
    section {
        padding: 60px 16px;
    }
    .cards {
        gap: 16px;
    }
    .card {
        padding: 24px 20px;
        min-height: 170px;
    }
    .card h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }
    .card p {
        font-size: 13px;
        line-height: 1.65;
    }
    .btn {
        padding: 11px 20px;
        font-size: 13px;
    }
}

/* --- Animated Grid --- */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(to right, var(--border-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-scroll 3s linear infinite;
    z-index: -1;
    opacity: 0.5;
    will-change: background-position;
}

@keyframes grid-scroll {
    from {
        background-position: 0 0;
    }
    to {
        background-position: -50px -50px;
    }
}