/* Base Variables */
:root {
    --primary-red: #FF0000;
    --primary-blue: #0000FF;
    --primary-yellow: #FFFF00;
    --bauhaus-black: #000000;
    --bauhaus-white: #FFFFFF;
    --gray-light: #f5f5f5;
    --gray-medium: #e0e0e0;
    --transition-speed: 0.3s;
}

/* Global layout resets to prevent horizontal overflow */
html {
    overflow-x: hidden; /* Ensure iOS Safari also hides horizontal overflow */
}

* , *::before, *::after {
    box-sizing: border-box; /* Prevent borders/padding from causing overflow */
}

body {
    font-family: 'Roboto Mono', monospace;
    line-height: 1.6;
    color: var(--bauhaus-black);
    background-color: var(--bauhaus-white);
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    position: relative;
    width: 100%;
    z-index: 1000;
    background-color: var(--bauhaus-white);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 32px;
    font-weight: 700;
    color: var(--bauhaus-black);
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-square {
    display: inline-block;
    width: 28px;
    height: 28px;
    margin-right: 5px; /* half the original 10px space */
    background-color: var(--primary-red);
}

/* Desktop Navigation */
.nav-desktop {
    display: none;
}

.nav-desktop ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-desktop li {
    margin-left: 30px;
}

.nav-desktop a {
    font-weight: 500;
    padding: 5px 0;
    position: relative;
    color: var(--bauhaus-black);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

.nav-desktop a:hover {
    color: var(--primary-blue);
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-blue);
    transition: width var(--transition-speed) ease;
}

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--bauhaus-black);
    margin: 5px 0;
    transition: transform var(--transition-speed) ease;
}

/* Mobile Navigation Menu */
.nav-mobile {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--bauhaus-white);
    overflow: hidden;
    transition: height var(--transition-speed) ease;
    z-index: 999;
}

.nav-mobile.active {
    height: calc(100vh - 80px);
}

.nav-mobile ul {
    list-style: none;
    padding: 20px;
    margin: 0;
}

.nav-mobile li {
    margin-bottom: 20px;
}

.nav-mobile a {
    font-size: 20px;
    font-weight: 500;
    color: var(--bauhaus-black);
    text-decoration: none;
}

/* Hero Section */
.hero {
    padding-top: 40px;
    padding-bottom: 40px; /* reduced bottom padding */
    background-color: var(--bauhaus-white);
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* Title Section - Fixed Height Approach */
.title-section {
    height: 150px;
    margin-bottom: 20px;
    position: relative;
}

.hero-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin: 0;
}

.typewriter-text {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin-top: 10px;
    position: relative;
    display: block;
    min-height: 43px; /* Ensure consistent height even when empty */
}

/* Remove the cursor-blink animation since we're handling it in JS */
@keyframes cursor-blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    margin-bottom: 30px;
    max-width: 600px;
}

/* Hero Section Decorative Shapes */
.hero-shapes {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.1;
}

.shape {
    position: absolute;
}

/* Removed .shape-1, .shape-2, .shape-3 styles */

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-speed) ease;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--bauhaus-white);
}

.btn-primary:hover {
    background-color: var(--primary-red);
    color: var(--bauhaus-white);
}

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

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: var(--bauhaus-white);
}

/* Animation Hook */
.highlight-row {
    display: flex;
    height: 10px; /* reduced height */
    margin: 0; /* remove extra margin */
    position: relative;
}

/* Responsive styles */
@media (min-width: 768px) {
    .title-section {
        height: 170px;
    }
    
    .hero-title, .typewriter-text {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 20px;
    }
}

/* Mobile-only: prevent hero title/typewriter from overlapping subtitle */
@media (max-width: 767px) {
    .title-section {
        height: auto;           /* allow section to grow with longest line */
        min-height: 150px;      /* keep baseline spacing before typing starts */
    }
    .hero-subtitle {
        margin-top: 12px;       /* add separation from animated title */
    }
}

@media (min-width: 1024px) {
    .title-section {
        height: 200px;
    }
    
    .hero-title, .typewriter-text {
        font-size: 48px;
    }
    
    .nav-desktop {
        display: block;
    }

    .nav-toggle {
        display: none;
    }
}

/* Navigation toggle animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Snake Game Section */
body .snake-game-section {
    padding: 20px 0 40px 0;
    background-color: var(--bauhaus-white) !important;
    position: relative;
}

/* Mobile-only carousel arrows shared styles */
.carousel-arrows {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 12px;
}

.carousel-arrow {
    appearance: none;
    background: var(--bauhaus-white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: 6px;
    width: 44px;
    height: 36px;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.carousel-arrow:active {
    transform: translateY(1px);
}

@media (max-width: 767px) {
    .carousel-arrows {
        display: flex;
        position: relative; /* keep normal flow */
        left: auto;         /* avoid offset that can cause overflow */
        transform: none;    /* rely on flex centering instead */
        width: 100%;        /* occupy container width safely */
        margin-left: auto;
        margin-right: auto;
        justify-content: center; /* explicit centering */
    }
}

.snake-description {
    text-align: center;
    margin-bottom: 30px;
    font-size: 18px;
    color: var(--bauhaus-black);
}

.snake-desc-desktop { display: inline; }
.snake-desc-mobile { display: none; }

.game-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--bauhaus-white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#snakeCanvas {
    width: 100%;
    aspect-ratio: 16/9;
    background-color: var(--bauhaus-white);
    border: 2px solid var(--primary-blue);
    border-radius: 4px;
    margin-bottom: 20px;
    display: block;
}

.game-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 10px 0;
}

.score {
    font-size: 24px;
    font-weight: 700;
    color: var(--bauhaus-black);
    font-family: 'Roboto Mono', monospace;
}

@media (max-width: 768px) {
    .game-container {
        padding: 10px;
    }

    #snakeCanvas {
        height: 300px;
    }

    .game-controls {
        flex-direction: column;
        gap: 10px;
    }
    body .snake-game-section {
        padding-bottom: 30px;
    }
}

/* Mobile-friendly layout for snake touch controls, reusing carousel-arrow styles */
.snake-touch-controls {
    display: none;
    margin-top: 8px;
}

.snake-touch-controls .snake-row {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin: 6px 0;
}

@media (max-width: 767px) {
    .snake-touch-controls {
        display: block;
    }
    .snake-desc-desktop { display: none; }
    .snake-desc-mobile { display: inline; }
}