/* Team Resistance #86 - Central Stylesheet */
/* Programming Training Website */

/* ===== ROOT VARIABLES ===== */
:root {
    --resistance-green: #00ff41;
    --resistance-green-dark: #00cc33;
    --resistance-green-darker: #009926;
    --resistance-green-light: #00ff88;
    --resistance-black: #1a1a1a;
    --resistance-dark-gray: #2d2d2d;
    --resistance-med-gray: #444444;
    --resistance-light-gray: #cccccc;
    --resistance-white: #ffffff;
    
    --shadow-green: rgba(0, 255, 65, 0.3);
    --shadow-green-strong: rgba(0, 255, 65, 0.6);
    --bg-green-subtle: rgba(0, 255, 65, 0.05);
    --bg-green-light: rgba(0, 255, 65, 0.1);
    
    --header-height: 80px;
    --nav-width: 250px;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--resistance-black) 0%, #0d0d0d 100%);
    color: var(--resistance-white);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, var(--resistance-dark-gray) 0%, var(--resistance-black) 100%);
    border-bottom: 3px solid var(--resistance-green);
    display: flex;
    align-items: center;
    padding: 0 30px;
    z-index: 1000;
    box-shadow: 0 4px 20px var(--shadow-green);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
}

.logo-circle {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--resistance-green) 0%, var(--resistance-green-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--resistance-black);
    border: 3px solid var(--resistance-green);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.team-name {
    font-size: 20px;
    font-weight: bold;
    color: var(--resistance-green);
    letter-spacing: 2px;
}

.team-tagline {
    font-size: 11px;
    color: var(--resistance-light-gray);
    font-style: italic;
}

.header-nav {
    margin-left: auto;
    display: flex;
    gap: 25px;
}

.header-nav a {
    color: var(--resistance-light-gray);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 8px 12px;
    border-radius: 5px;
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--resistance-green);
    background: var(--bg-green-subtle);
}

/* ===== MOBILE MENU TOGGLE ===== */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 2px solid var(--resistance-green);
    color: var(--resistance-green);
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    margin-left: auto;
}

/* ===== SIDEBAR NAVIGATION ===== */
.sidebar-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--nav-width);
    height: calc(100vh - var(--header-height));
    background: var(--resistance-dark-gray);
    border-right: 2px solid var(--resistance-med-gray);
    padding: 30px 20px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 30px;
}

.nav-section-title {
    font-size: 12px;
    font-weight: bold;
    color: var(--resistance-green);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--resistance-med-gray);
}

.nav-section ul {
    list-style: none;
}

.nav-section li {
    margin-bottom: 8px;
}

.nav-section a {
    display: block;
    color: var(--resistance-light-gray);
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.nav-section a:hover,
.nav-section a.active {
    background: var(--bg-green-light);
    color: var(--resistance-green);
    transform: translateX(5px);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: var(--nav-width);
    margin-top: var(--header-height);
    padding: 40px;
    min-height: calc(100vh - var(--header-height));
}

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

/* ===== TYPOGRAPHY ===== */
h1 {
    font-size: 42px;
    color: var(--resistance-green);
    margin-bottom: 20px;
    font-weight: bold;
}

h2 {
    font-size: 32px;
    color: var(--resistance-green);
    margin-top: 40px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--resistance-green);
}

h3 {
    font-size: 24px;
    color: var(--resistance-green-light);
    margin-top: 30px;
    margin-bottom: 15px;
}

h4 {
    font-size: 18px;
    color: var(--resistance-light-gray);
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 15px;
    color: var(--resistance-light-gray);
}

a {
    color: var(--resistance-green-light);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

code {
    background: var(--resistance-dark-gray);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: var(--resistance-green-light);
    font-size: 0.9em;
}

pre {
    background: var(--resistance-dark-gray);
    border-left: 4px solid var(--resistance-green);
    padding: 20px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px 0;
}

pre code {
    background: none;
    padding: 0;
}

/* ===== LISTS ===== */
ul, ol {
    margin-left: 30px;
    margin-bottom: 20px;
}

li {
    margin-bottom: 8px;
    color: var(--resistance-light-gray);
}

/* ===== TABLES ===== */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--resistance-dark-gray);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--resistance-green);
    color: var(--resistance-black);
}

th {
    padding: 15px;
    text-align: left;
    font-weight: bold;
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--resistance-med-gray);
}

tbody tr:hover {
    background: var(--bg-green-subtle);
}

/* ===== BOXES & CARDS ===== */
.info-box {
    background: var(--resistance-dark-gray);
    border-left: 4px solid var(--resistance-green);
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.warning-box {
    background: rgba(255, 193, 7, 0.1);
    border-left: 4px solid #ffc107;
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.success-box {
    background: var(--bg-green-light);
    border-left: 4px solid var(--resistance-green);
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.card {
    background: var(--resistance-dark-gray);
    border: 2px solid var(--resistance-med-gray);
    border-radius: 10px;
    padding: 25px;
    margin: 20px 0;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--resistance-green);
    box-shadow: 0 8px 25px var(--shadow-green);
}

.card-title {
    font-size: 22px;
    color: var(--resistance-green);
    margin-bottom: 15px;
    font-weight: bold;
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: bold;
    margin-right: 8px;
}

.badge-beginner {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid #4caf50;
}

.badge-intermediate {
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
    border: 1px solid #ffc107;
}

.badge-advanced {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
    border: 1px solid #f44336;
}

.badge-green {
    background: var(--bg-green-light);
    color: var(--resistance-green);
    border: 1px solid var(--resistance-green);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(135deg, var(--resistance-green) 0%, var(--resistance-green-dark) 100%);
    color: var(--resistance-black);
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-green-strong);
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--resistance-green);
    color: var(--resistance-green);
}

.btn-outline:hover {
    background: var(--bg-green-light);
}

/* ===== FOOTER ===== */
.site-footer {
    margin-left: var(--nav-width);
    background: var(--resistance-black);
    border-top: 2px solid var(--resistance-green);
    padding: 30px;
    text-align: center;
    color: var(--resistance-light-gray);
    font-size: 14px;
}

.footer-highlight {
    color: var(--resistance-green);
    font-weight: bold;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .sidebar-nav {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    
    .sidebar-nav.active {
        transform: translateX(0);
    }
    
    .header-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .site-footer {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 32px;
    }
    
    h2 {
        font-size: 26px;
    }
    
    .site-header {
        padding: 0 15px;
    }
    
    .team-name {
        font-size: 16px;
    }
    
    .logo-circle {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.text-green {
    color: var(--resistance-green);
}

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--shadow-green);
    }
    50% {
        box-shadow: 0 0 40px var(--shadow-green-strong);
    }
}

.glow {
    animation: glow 2s infinite;
}

/* ===== SKILLS PROGRESSION PAGE ===== */
.progression-container {
    max-width: 1200px;
    margin: 0 auto;
}

.progression-header {
    text-align: center;
    margin-bottom: 50px;
}

.progression-header .logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.progression-header .logo-circle {
    width: 120px;
    height: 120px;
    font-size: 56px;
    box-shadow: 0 8px 32px var(--shadow-green-strong);
}

.progression-header .team-name {
    font-size: 48px;
    font-weight: bold;
    color: var(--resistance-green);
    text-shadow: 0 0 20px var(--shadow-green);
    letter-spacing: 2px;
}

.progression-tagline {
    font-size: 18px;
    color: var(--resistance-green);
    font-style: italic;
    margin-top: 10px;
    letter-spacing: 1px;
}

.progression-title {
    font-size: 32px;
    color: var(--resistance-white);
    margin-top: 30px;
    text-align: center;
    border: none;
}

.progression-path {
    position: relative;
    padding: 40px 0;
}

.vertical-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--resistance-green) 0%, var(--resistance-green-dark) 50%, var(--resistance-green-darker) 100%);
    transform: translateX(-50%);
    box-shadow: 0 0 20px var(--shadow-green);
}

.challenge-node {
    position: relative;
    margin: 60px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.challenge-card {
    width: 480px;
    background: linear-gradient(135deg, var(--resistance-dark-gray) 0%, #1f1f1f 100%);
    border: 3px solid var(--resistance-green);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(0, 255, 65, 0.2);
    transition: all 0.3s ease;
    position: relative;
    z-index: 10;
}

.challenge-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 255, 65, 0.4);
    border-color: var(--resistance-green-light);
}

.challenge-card.left {
    margin-right: auto;
    margin-left: 0;
}

.challenge-card.right {
    margin-left: auto;
    margin-right: 0;
}

.challenge-number {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--resistance-green) 0%, var(--resistance-green-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    color: var(--resistance-black);
    border: 4px solid var(--resistance-black);
    box-shadow: 0 4px 16px rgba(0, 255, 65, 0.4);
    z-index: 20;
}

.challenge-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--resistance-green);
    margin-bottom: 10px;
}

.challenge-difficulty {
    display: inline-block;
    padding: 5px 15px;
    background: var(--bg-green-light);
    border: 1px solid var(--resistance-green);
    border-radius: 20px;
    font-size: 14px;
    color: var(--resistance-green);
    margin-bottom: 15px;
}

.challenge-description {
    color: var(--resistance-light-gray);
    line-height: 1.6;
    margin-bottom: 15px;
}

.skills-learned {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--resistance-med-gray);
}

.skills-title {
    font-size: 14px;
    color: var(--resistance-green);
    font-weight: bold;
    margin-bottom: 8px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 4px 12px;
    background: rgba(0, 255, 65, 0.15);
    border-radius: 12px;
    font-size: 12px;
    color: var(--resistance-green);
}

.start-node, .end-node {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, var(--resistance-green) 0%, var(--resistance-green-dark) 100%);
    border-radius: 20px;
    font-size: 24px;
    font-weight: bold;
    color: var(--resistance-black);
    box-shadow: 0 8px 32px rgba(0, 255, 65, 0.5);
    max-width: 400px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.end-node {
    background: linear-gradient(135deg, var(--resistance-green) 0%, #ffcc00 100%);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 8px 32px rgba(0, 255, 65, 0.5);
    }
    50% {
        box-shadow: 0 8px 48px rgba(0, 255, 65, 0.8);
    }
}

.level-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--resistance-dark-gray) 0%, #1f1f1f 100%);
    border: 2px solid var(--resistance-green);
    border-radius: 20px;
    margin-top: 15px;
    font-size: 14px;
    color: var(--resistance-green);
}

.progression-footer {
    text-align: center;
    margin-top: 80px;
    color: #888;
    font-size: 14px;
}

/* Responsive adjustments for progression */
@media (max-width: 768px) {
    .challenge-card {
        width: 100%;
        max-width: 400px;
    }

    .challenge-card.left,
    .challenge-card.right {
        margin-left: auto;
        margin-right: auto;
    }

    .progression-header .team-name {
        font-size: 32px;
    }

    .progression-header .logo-circle {
        width: 80px;
        height: 80px;
        font-size: 40px;
    }
}