/* ========================================
 * ROHITH KUMAR DHAMGATLA - PORTFOLIO STYLES
 * Shared CSS for Multi-Page Portfolio
 * ======================================== */

:root {
    --color-dark-purple: #0a041f;
    --color-mid-purple: #1c1033;
    --color-accent-blue: #a3daff;
    --color-text-light: #f0f8ff;
    --color-text-secondary: #aaaaaa;
    --color-btn-primary: #8e59ff;
    --color-glow-blue: rgba(163, 218, 255, 0.7);
    --color-card-accent: #ffc107;
    --color-skill-bg: rgba(30, 15, 60, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(163, 218, 255, 0.15);
    --holo-glow: rgba(142, 89, 255, 0.2);
    --terminal-bg: rgba(0, 0, 0, 0.95);
    --terminal-text: #00ff00;
    --terminal-border: var(--color-accent-blue);
    --game-success: #51cf66;
    --game-error: #ff6b6b;
}

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

html {
    scroll-padding-top: 100px;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-dark-purple);
    color: var(--color-text-light);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    min-height: 100vh;
}

a {
    color: var(--color-accent-blue);
    text-decoration: none;
    transition: color 0.3s;
}

h1, h2, h3, h4 {
    font-weight: 600;
}

section {
    padding: 5rem 10%;
    position: relative;
    z-index: 2;
    scroll-margin-top: 100px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    letter-spacing: 0.15em;
    color: var(--color-accent-blue);
    text-transform: uppercase;
}

/* Background & Particles */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(180deg, var(--color-mid-purple) 0%, var(--color-dark-purple) 100%);
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    pointer-events: none;
    animation: twinkle linear infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ============ TRAVELING ASTRONAUT ============ */
.astronaut-traveler {
    position: fixed;
    z-index: 9999;
    pointer-events: none;
    transition: all 0.3s ease-out;
}

.astronaut-traveler img {
    width: 80px;
    height: auto;
    filter: drop-shadow(0 0 15px rgba(163, 218, 255, 0.6));
    animation: astronautFloat 3s ease-in-out infinite;
}

@keyframes astronautFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

/* ============ SPACE SIDEBAR ============ */
.space-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.sidebar-item {
    position: relative;
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.7);
    border: 2px solid var(--color-accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
}

.sidebar-item:hover {
    transform: scale(1.2);
    background: var(--color-accent-blue);
    box-shadow: 0 0 30px var(--color-accent-blue);
}

.sidebar-item i {
    font-size: 1.3rem;
    color: var(--color-accent-blue);
    transition: color 0.3s;
}

.sidebar-item:hover i {
    color: var(--color-dark-purple);
}

.sidebar-tooltip {
    position: absolute;
    right: 65px;
    background: rgba(0, 0, 0, 0.9);
    color: var(--color-accent-blue);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    border: 1px solid var(--color-accent-blue);
    font-size: 0.85rem;
    font-weight: 500;
}

.sidebar-item:hover .sidebar-tooltip {
    opacity: 1;
}

.sidebar-item.active {
    background: var(--color-accent-blue);
    box-shadow: 0 0 20px var(--color-accent-blue);
}

.sidebar-item.active i {
    color: var(--color-dark-purple);
}

/* Buttons */
.btn-general {
    padding: 0.75rem 2rem;
    border-radius: 5px;
    text-transform: uppercase;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
    display: inline-block;
    margin: 0.5rem;
}

.btn-primary {
    background-color: var(--color-btn-primary);
    color: var(--color-text-light);
    box-shadow: 0 0 10px rgba(142, 89, 255, 0.5);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--color-accent-blue);
    color: var(--color-accent-blue);
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(142, 89, 255, 0.8);
    transform: translateY(-2px);
}

.btn-secondary:hover {
    background-color: var(--color-accent-blue);
    color: var(--color-dark-purple);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: transparent;
    padding: 0 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: background-color 0.4s ease;
    height: 100px;
}

.navbar.scrolled {
    background-color: rgba(10, 4, 31, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
}

.navbar-brand {
    font-family: 'Teko', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-blue);
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    z-index: 1001;
}

.navbar-brand img {
    width: 150px;
}

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

.nav-links a {
    position: relative;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s, transform 0.3s;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-btn-primary);
    transition: width 0.3s ease-in-out, left 0.3s ease-in-out;
    box-shadow: 0 0 8px var(--color-btn-primary);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text-light);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
    left: 0;
}

.btn-resume {
    background-color: var(--color-card-accent);
    color: var(--color-dark-purple) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 50px;
    font-weight: 700;
    margin-left: 20px;
    text-transform: uppercase;
    box-shadow: 0 0 15px rgba(255, 193, 7, 0.5);
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-resume::after { display: none; }

.btn-resume:hover {
    background-color: #ffda6a;
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(255, 193, 7, 0.8);
}

.menu-toggle {
    display: none;
    font-size: 1.8rem;
    color: var(--color-text-light);
    cursor: pointer;
    z-index: 1002;
}

/* Footer */
.site-footer {
    background-color: transparent;
    position: relative;
    z-index: 10;
    padding: 5rem 10%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 5rem;
}

.footer-content {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    flex-basis: 100%;
    text-align: center;
    margin-bottom: 1rem;
}

.footer-brand h4 {
    font-size: 1.8rem;
    color: var(--color-accent-blue);
    margin-bottom: 0.5rem;
}

.copy {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    text-align: center;
    z-index: 100;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copy p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    margin: 0;
    letter-spacing: 0.5px;
}

/* Scroll Reveal Animation */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Page Container */
.page-container {
    min-height: 100vh;
    padding-top: 100px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .navbar {
        height: 80px;
        background-color: rgba(10, 4, 31, 0.95);
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: rgba(10, 4, 31, 0.98);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 2rem;
        transition: right 0.4s ease-in-out;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .nav-links a {
        font-size: 1.2rem;
        margin: 15px 0;
    }

    .btn-resume {
        margin-left: 0;
        margin-top: 20px;
    }

    section {
        padding: 3rem 5%;
    }

    .site-footer {
        padding: 3rem 5%;
    }

    /* Mobile Sidebar & Astronaut */
    .space-sidebar {
        right: 10px;
        gap: 1rem;
    }

    .sidebar-item {
        width: 40px;
        height: 40px;
    }

    .sidebar-item i {
        font-size: 1rem;
    }

    .sidebar-tooltip {
        display: none;
    }

    .astronaut-traveler img {
        width: 60px;
    }
}