/* Font Imports */
@font-face {
    font-family: 'Helmet';
    src: url('fonts/Helmet-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Porpora';
    src: url('fonts/Porpora-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* CSS Variables for Theme */
:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --border-color: #000000;
    --border-width: 1px;
    --transition-speed: 0.15s;
    --theme-transition: all 0.15s ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #ffffff;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    transition: var(--theme-transition);
}

body {
    font-family: 'Porpora', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--theme-transition);
    min-height: 100vh;
}

/* Container System - Simple Border Approach */
.container {
    width: 100%;
    background-color: var(--bg-color);
    transition: var(--theme-transition);
}

/* Only give borders to specific sides to avoid double borders */
header {
    border: var(--border-width) solid var(--border-color);
    padding: 20px;
}

.hero {
    border-top: none;
    border-left: var(--border-width) solid var(--border-color);
    border-right: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
    padding: 60px 20px;
}

.nav-tabs {
    border-left: var(--border-width) solid var(--border-color);
    border-right: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--bg-color);
    transition: var(--theme-transition);
    display: flex;
}

.content {
    border-left: var(--border-width) solid var(--border-color);
    border-right: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
    padding: 0;
    overflow: hidden;
    transition: var(--theme-transition);
}

footer {
    border-left: var(--border-width) solid var(--border-color);
    border-right: var(--border-width) solid var(--border-color);
    border-bottom: var(--border-width) solid var(--border-color);
    padding: 20px;
    text-align: center;
    transition: var(--theme-transition);
}

/* Theme Toggle - Bottom Right Position */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-slider {
    position: relative;
    width: 60px;
    height: 30px;
    background-color: var(--bg-color);
    border: var(--border-width) solid var(--border-color);
    border-radius: 15px;
    cursor: pointer;
    transition: var(--theme-transition);
    outline: none;
}

.theme-slider::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background-color: var(--text-color);
    border-radius: 50%;
    transition: var(--theme-transition);
}

.theme-slider:hover {
    transform: scale(1.05);
}

[data-theme="light"] .theme-slider::after {
    transform: translateX(0);
}

[data-theme="dark"] .theme-slider::after {
    transform: translateX(30px);
}

/* Header Layout */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

header h1 {
    font-family: 'Helmet', sans-serif;
    font-size: 2rem;
    font-weight: normal;
    transition: var(--theme-transition);
}

.menu-btn {
    background: transparent;
    border: var(--border-width) solid var(--border-color);
    color: var(--text-color);
    padding: 10px 15px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    transition: var(--theme-transition);
    position: relative;
    z-index: 100;
}

.menu-btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Hero Section */
.hero {
    text-align: center;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--theme-transition);
}


    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Navigation Tabs */
.nav-tab {
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 15px 20px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    border-right: var(--border-width) solid var(--border-color);
    transition: var(--theme-transition);
    flex: 1;
    position: relative;
    outline: none;
}

.nav-tab:last-child {
    border-right: none;
}

.nav-tab:hover,
.nav-tab.active {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Content Sections */
.content-section {
    padding: 40px 20px;
    background-color: var(--bg-color);
    display: none !important;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-section.active {
    display: block;
    opacity: 1 !important;
    transform: translateX(0);
}

.content-section h3 {
    font-family: 'Helmet', sans-serif;
    font-size: 1.5rem;
    font-weight: normal;
    margin-bottom: 20px;
    transition: var(--theme-transition);
}

.content-section ul {
    list-style: none;
    margin: 20px 0;
}

.content-section li {
    padding: 5px 0;
    margin-left: 20px;
    position: relative;
    transition: var(--theme-transition);
}

.content-section li::before {
    content: '•';
    position: absolute;
    left: -15px;
}

/* Content Grid with Individual Borders */
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    max-width: 1200px;
    margin: 0 auto;
}

.content-grid > div {
    padding: 30px;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-color);
    transition: var(--theme-transition);
    margin-bottom: 0;
}

/* Remove bottom border from all but last to avoid double lines */
.content-grid > div:not(:last-child) {
    border-bottom: none;
}

.content-grid h3 {
    font-family: 'Helmet', sans-serif;
    font-size: 1.5rem;
    font-weight: normal;
    margin-bottom: 20px;
    transition: var(--theme-transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    border: var(--border-width) solid var(--border-color);
    color: var(--text-color);
    text-decoration: none;
    font-family: inherit;
    font-size: 16px;
    cursor: pointer;
    transition: var(--theme-transition);
    margin-top: 20px;
    outline: none;
}

.btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Footer */
.footer-content p {
    font-size: 14px;
    transition: var(--theme-transition);
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    margin: 0 10px;
    font-size: 12px;
    border-bottom: 1px solid transparent;
    transition: var(--theme-transition);
}

.footer-links a:hover {
    border-bottom-color: var(--text-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .content-grid > div {
        padding: 20px;
    }
    
    .nav-tabs {
        flex-wrap: wrap;
        display: flex;
}
    
    .nav-tab {
        flex: 1 1 50%;
        min-width: 120px;
    }

    .theme-toggle {
        bottom: 10px;
        right: 10px;
    }
.hero.minimized {        min-height: 15vh;        padding: 10px;    }        .hero.minimized .hero-content {        transform: scale(1) !important;        opacity: 1 !important;    }        .hero.minimized .hero-content p {        display: none !important;    }        .hero.minimized .scroll-indicator {        display: none !important;    }
}

    .hero.minimized .hero-content {
        transform: scale(1) !important;
        opacity: 1 !important;
    }

    .hero.minimized .hero-content p {
        display: none !important;
    }

    .hero.minimized .scroll-indicator {
        display: none !important;
    }
        display: none !important;
    }

/* Focus Styles for Accessibility */
button:focus,
a:focus {
    outline: 2px solid var(--border-color);
    outline-offset: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    

}

/* SKIP LINK - ADDED PHASE 6 */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--bg-color);
  color: var(--text-color);
  padding: 8px;
  z-index: 1000;
  transition: top 0.2s;
  text-decoration: none;
  border: 1px solid var(--border-color);
}
.skip-link:focus {
  top: 0;
  outline: 2px solid var(--text-color);
}

/* Reserve space for navigation tabs (Phase 6) */
.nav-tabs {
    min-height: 50px;
}