/* ===== VARIABLES & RESET ===== */
:root {
    --light-green: #e8f5e9;
    --primary-green: #2e7d32;
    --secondary-green: #4caf50;
    --accent-green: #81c784;
    --dark-green: #1b5e20;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #333;
    --text-color: #333;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --border-radius-sm: 8px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9fff9;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ===== GUIDELINE CONTAINER ===== */
.guideline-container {
    display: flex;
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 clamp(1rem, 3vw, 2rem);
    gap: clamp(1.5rem, 4vw, 2.5rem);
    flex: 1;
    width: 100%;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: clamp(260px, 25vw, 300px);
    background: linear-gradient(180deg, var(--white) 0%, #f8fdf8 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: clamp(1.5rem, 2vw, 2rem);
    height: fit-content;
    position: sticky;
    top: 100px;
    align-self: flex-start;
    border-left: 5px solid var(--primary-green);
    transition: var(--transition);
}

.sidebar:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.nav-links-list {
    list-style: none;
    margin-bottom: 2rem;
}

.nav-links-list li {
    margin-bottom: 0.8rem;
}

.nav-links-list li a {
    display: block;
    padding: 0.8rem 1rem;
    text-decoration: none;
    color: var(--dark-green);
    background: var(--light-green);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
    border-left: 3px solid transparent;
}

.nav-links-list li a:hover {
    background: linear-gradient(90deg, var(--accent-green) 0%, #a5d6a7 100%);
    border-left: 3px solid var(--primary-green);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(129, 199, 132, 0.3);
}

.start-submission-btn {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: white;
    text-decoration: none;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    width: 100%;
    cursor: pointer;
    font-size: 1rem;
}

.start-submission-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(46, 125, 50, 0.3);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    min-width: 0;
    background: linear-gradient(180deg, var(--white) 0%, #f8fdf8 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    animation: fadeIn 0.6s ease;
}

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

.main-title {
    color: var(--primary-green);
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--light-green);
    font-weight: 700;
    letter-spacing: 0.5px;
    position: relative;
}

.main-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    border-radius: 3px;
}

/* ===== SECTIONS ===== */
.main-content section {
    margin-bottom: 3rem;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.main-content h3 {
    color: var(--primary-green);
    font-size: clamp(1.3rem, 2.5vw, 1.6rem);
    margin-bottom: 1.2rem;
    font-weight: 600;
    position: relative;
    padding-left: 0.5rem;
}

.main-content h3::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    top: 0.2rem;
    width: 4px;
    height: 1.5rem;
    background: linear-gradient(180deg, var(--accent-green) 0%, var(--secondary-green) 100%);
    border-radius: 4px;
}

.main-content p {
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    color: var(--dark-gray);
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* ===== SUBMIT ONLINE SECTION ===== */
.submission-online {
    background: linear-gradient(135deg, rgba(232, 245, 233, 0.5) 0%, rgba(200, 230, 201, 0.5) 100%);
    padding: clamp(1.5rem, 3vw, 2rem);
    border-radius: var(--border-radius);
    border-left: 5px solid var(--primary-green);
    margin-bottom: 2rem;
}

.submission-online p {
    margin-bottom: 1rem;
}

.reg-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    transition: var(--transition);
}

.reg-link:hover {
    background-color: var(--light-green);
    text-decoration: underline;
}

/* ===== AUTHOR GUIDELINES SECTION ===== */
.author-guidelines {
    background: linear-gradient(135deg, rgba(232, 245, 233, 0.3) 0%, rgba(200, 230, 201, 0.3) 100%);
    padding: clamp(1.5rem, 3vw, 2rem);
    border-radius: var(--border-radius);
    border-left: 5px solid var(--accent-green);
}

.author-guidelines a {
    display: inline-block;
    text-decoration: none;
    padding: 0.8rem 1.2rem;
    margin: 0.5rem 0;
    background: var(--white);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
    border: 1px solid var(--light-green);
}

.author-guidelines a:hover {
    background: linear-gradient(90deg, var(--light-green) 0%, var(--accent-green) 100%);
    color: var(--dark-green) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(129, 199, 132, 0.3);
    border-color: var(--accent-green);
}

.author-guidelines a i {
    margin-right: 0.5rem;
    color: var(--primary-green);
}
/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Large Desktops (1440px and above) */
@media (min-width: 1440px) {
    .guideline-container {
        max-width: 1600px;
    }
}

/* Tablets (992px and below) */
@media (max-width: 992px) {
    .guideline-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: static;
        top: 0;
    }
    
    .nav-links-list {
        display: flex;
        flex-wrap: wrap;
        gap: 0.8rem;
    }
    
    .nav-links-list li {
        flex: 1 1 calc(50% - 0.4rem);
        margin-bottom: 0;
    }
    
    .nav-links-list li a {
        text-align: center;
    }
    
    .nav-links-list li a:hover {
        transform: translateY(-2px);
    }
}

/* Tablets (768px and below) */
@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        display: none;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        z-index: 1000;
        border-top: 3px solid var(--secondary-green);
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .guideline-container {
        margin: 1rem auto;
    }
    
    .nav-links-list {
        flex-direction: column;
    }
    
    .nav-links-list li {
        flex: 1 1 100%;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .main-content h3 {
        font-size: 1.4rem;
    }
    
    .main-content p {
        font-size: 1rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section ul li a:hover {
        transform: none;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Large Mobile (576px and below) */
@media (max-width: 576px) {
    body {
        font-size: 14px;
    }
    
    .header {
        padding: 0.8rem 1rem;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .guideline-container {
        padding: 0 1rem;
        margin: 1rem auto;
    }
    
    .sidebar {
        padding: 1.2rem;
    }
    
    .nav-links-list li a {
        padding: 0.7rem;
        font-size: 0.95rem;
    }
    
    .start-submission-btn {
        padding: 0.8rem;
        font-size: 0.95rem;
    }
    
    .main-content {
        padding: 1.2rem;
    }
    
    .main-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .main-content h3 {
        font-size: 1.3rem;
    }
    
    .main-content p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .submission-online,
    .author-guidelines {
        padding: 1.2rem;
    }
    
    .author-guidelines a {
        display: block;
        text-align: center;
        margin: 0.5rem 0;
    }
    
    .footer {
        padding: 1.5rem 1rem;
    }
}

/* Small Mobile (360px and below) */
@media (max-width: 360px) {
    .logo h1 {
        font-size: 1.1rem;
    }
    
    .main-title {
        font-size: 1.3rem;
    }
    
    .main-content h3 {
        font-size: 1.2rem;
    }
    
    .main-content p {
        font-size: 0.9rem;
    }
    
    .nav-links-list li a {
        font-size: 0.9rem;
        padding: 0.6rem;
    }
}

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

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }

.w-100 { width: 100%; }
.w-75 { width: 75%; }
.w-50 { width: 50%; }

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-green);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-green);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-green);
}

/* ===== ACCESSIBILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus {
    outline: 3px solid var(--secondary-green);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--secondary-green);
    outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
    .header,
    .sidebar,
    .footer,
    .mobile-nav-toggle,
    .start-submission-btn {
        display: none !important;
    }
    
    .guideline-container {
        display: block;
        padding: 0;
        margin: 0;
    }
    
    .main-content {
        box-shadow: none;
        padding: 0;
    }
    
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    
    .main-title {
        color: black;
    }
    
    .main-title::after {
        background: black;
    }
    
    .submission-online,
    .author-guidelines {
        background: none;
        border: 1px solid #ccc;
        border-left: 5px solid #000;
    }
    
    a {
        color: black !important;
        text-decoration: underline !important;
    }
}


/* ===== TOUCH DEVICE OPTIMIZATIONS ===== */
@media (hover: none) and (pointer: coarse) {
    .nav-links a,
    .nav-links-list li a,
    .start-submission-btn,
    .logout-btn,
    .author-guidelines a {
        padding: 1rem;
        min-height: 44px;
    }
    
    /* Reduce hover effects on touch devices */
    .nav-links a:hover,
    .nav-links-list li a:hover,
    .start-submission-btn:hover,
    .author-guidelines a:hover,
    .social-links a:hover {
        transform: none;
        box-shadow: none;
    }
    
    .sidebar {
        position: static;
    }
}