/* --- VARIABLES & THEME --- */
:root {
    /* LIGHT MODE (Default - Day) */
    --bg-color: #f4f4f6;
    --glass-bg: rgba(255, 255, 255, 0.6); /* Frosted glass effect */
    --glass-border: rgba(0, 0, 0, 0.05);
    --accent-red: #D9381E; 
    --accent-orange: #F2A900; 
    --text-main: #2c3e50;
    --text-muted: #586473;
    --card-hover-shadow: rgba(217, 56, 30, 0.15);
    --toggle-btn-bg: rgba(0, 0, 0, 0.05);
}

/* DARK MODE (Override - Night) */
body.dark-mode {
    --bg-color: #1a1c23;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f0f0f0;
    --text-muted: #a0a0a0;
    --card-hover-shadow: rgba(217, 56, 30, 0.2);
    --toggle-btn-bg: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* --- THEME TOGGLE BUTTON --- */
.theme-toggle {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--toggle-btn-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    backdrop-filter: blur(5px);
    font-size: 1.2rem;
}

.theme-toggle:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

/* --- BACK TO TOP BUTTON --- */
#backToTop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    background: var(--toggle-btn-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 45px; 
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: blur(5px);
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

#backToTop:hover {
    background-color: var(--accent-orange);
    border-color: var(--accent-orange);
    color: white;
    transform: translateY(-3px);
}

/* --- LAYOUT --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

/* --- HEADER --- */
header {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

h1 {
    font-size: 4rem;
    background: linear-gradient(45deg, var(--accent-red), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    line-height: 1.1;
}

h2 {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 650px;
}

.cta-btn {
    padding: 1rem 2rem;
    background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px var(--card-hover-shadow);
}

/* --- SECTIONS --- */
section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    border-left: 5px solid var(--accent-orange);
    padding-left: 1rem;
    color: var(--text-main);
}

/* --- CARDS --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-orange);
    box-shadow: 0 10px 30px var(--card-hover-shadow);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-orange);
}

.card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.tech-stack {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: var(--glass-border);
    color: var(--text-main);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid transparent;
}

.card:hover .tech-tag {
    border-color: var(--accent-red);
}

/* --- CARD BUTTONS --- */
.card-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.btn-small {
    padding: 0.6rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-fill {
    background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
    color: white;
    border: none;
}
.btn-fill:hover {
    box-shadow: 0 5px 15px var(--card-hover-shadow);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-orange);
    color: var(--text-main);
}
.btn-outline:hover {
    background: var(--accent-orange);
    color: white;
    transform: translateY(-2px);
}

/* --- SKILLS --- */
.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-item {
    border: 1px solid var(--accent-red);
    background: var(--glass-bg);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    color: var(--text-main);
    font-weight: 500;
}

/* --- FOOTER & SPLIT LAYOUT --- */
footer {
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: center;
    gap: 6rem;
    align-items: center;
    text-align: left;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links button, .social-links a {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    font-size: 1.8rem;
    transition: color 0.3s;
}

.social-links button:hover, .social-links a:hover {
    color: var(--accent-orange);
}

/* --- MINOR GAME WIDGET --- */
#ttt-widget {
    width: 140px;
}

#ttt-widget h5 {
    color: var(--accent-orange);
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-align: center;
    opacity: 0.8;
}

.ttt-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}

/* Default (Light Mode) Cells: Slight dark tint to see them against white bg */
.ttt-cell {
    background: rgba(0,0,0,0.03); 
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    color: var(--text-main);
    border: 1px solid transparent;
    transition: background 0.2s;
}

.ttt-cell:hover {
    background: rgba(0,0,0,0.1);
}

/* Dark Mode Overrides for Game */
body.dark-mode .ttt-cell {
    background: rgba(255,255,255,0.03);
}
body.dark-mode .ttt-cell:hover {
    background: rgba(255,255,255,0.1);
}

.ttt-cell.winner {
    background: var(--accent-orange) !important;
    color: white !important;
}

/* --- ANIMATION --- */
.leaf {
    position: absolute;
    top: -10%;
    width: 20px;
    height: 20px;
    background: var(--accent-red);
    opacity: 0.3;
    border-radius: 0 50% 0 50%;
    animation: fall linear infinite;
    z-index: -1;
}
.leaf:nth-child(2n) { background: var(--accent-orange); }

@keyframes fall {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    20% { opacity: 0.4; }
    100% { transform: translate(100px, 100vh) rotate(360deg); opacity: 0; }
}

/* Responsiveness */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .container { padding: 1.5rem; }
    .theme-toggle { top: 1.5rem; right: 1.5rem; }
    .card-actions { flex-direction: column; }
    
    .footer-content {
        flex-direction: column-reverse;
        gap: 3rem;
        text-align: center;
    }
    .footer-left { align-items: center; }
}