/* ==========================================================================
   Base Styles & Variables
   ========================================================================== */

   :root {
    /* Color Palette */
    --color-bg: #FCFCFC;
    --color-surface: #FFFFFF;
    --color-text-main: #111111;
    --color-text-muted: #555555;
    --color-text-light: #888888;
    
    /* Elegant Accent Color - Deep Navy Blue */
    --color-accent: #1A2B4C;
    --color-accent-hover: #111D36;
    
    /* Monochrome Accents */
    --color-border: #E5E5E5;
    --color-border-light: #F0F0F0;
    
    /* Typography */
    --font-heading: 'Noto Serif Telugu', serif;
    --font-ui: 'Hind Siliguri', sans-serif;
    
    /* Sizing */
    --max-width: 1280px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Shadows - High end editorial feel */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    font-family: var(--font-ui);
    color: var(--color-text-main);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6, .hero-badge, .fallback-logo {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-main);
}

.fallback-logo {
    font-size: 2rem;
    letter-spacing: -0.02em;
    color: var(--color-accent);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 1rem;
    border-radius: 2px; /* Minimalist sharp edges */
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
}

.btn i {
    font-size: 1.25rem;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-text-main);
}

.btn-secondary:hover {
    background-color: var(--color-text-main);
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: white;
}

/* ==========================================================================
   Top Value-Add Bar
   ========================================================================== */

.top-bar {
    background-color: var(--color-text-main);
    color: #FFFFFF;
    font-size: 0.85rem;
    padding: 0.4rem 0;
    font-family: var(--font-ui);
    letter-spacing: 0.02em;
}

.top-bar-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    opacity: 0.9;
}

@media (min-width: 768px) {
    .top-bar-container {
        padding: 0 var(--spacing-md);
    }
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */

.header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem var(--spacing-sm);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    height: 40px;
    object-fit: contain;
}

.logo-container {
    display: block;
    margin: 0 auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-text-main);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-text-main);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-main);
}

.hide-mobile {
    display: none;
}

@media (min-width: 1024px) {
    .header-container {
        padding: 1.5rem var(--spacing-md);
    }
    .site-logo {
        height: 60px;
    }
    .hide-mobile {
        display: flex;
    }
    .hide-desktop {
        display: none;
    }
    .navbar {
        justify-content: center;
    }
    .nav-left {
        flex: 1;
        justify-content: flex-end;
        padding-right: 4rem;
    }
    .logo-container {
        flex: 0 0 auto;
    }
    .nav-right {
        flex: 1;
        justify-content: flex-start;
        padding-left: 4rem;
    }
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-surface);
    z-index: 200;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateY(-100%);
    transition: transform var(--transition-smooth);
}

.mobile-menu-overlay.active {
    transform: translateY(0);
}

.close-menu-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-text-main);
}

.mobile-links {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
}

.mobile-links a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-text-main);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }
    .hero-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    color: var(--color-accent);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4rem;
    }
}

.hero-date {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    font-weight: 400;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

@media (min-width: 768px) {
    .hero-date {
        flex-direction: row;
        align-items: center;
        gap: 1rem;
    }
}

.date-separator {
    display: none;
}

@media (min-width: 768px) {
    .date-separator {
        display: inline;
        color: var(--color-border);
    }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 480px) {
    .hero-actions {
        flex-direction: row;
    }
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.paper-preview-wrapper {
    position: relative;
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    perspective: 1000px;
}

/* Elegant Placeholder for Paper if image is missing */
.paper-preview {
    background-color: white;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    aspect-ratio: 1 / 1.414; /* Standard A-series paper ratio */
    width: 100%;
    padding: 5%;
    display: flex;
    flex-direction: column;
    transform: rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-smooth);
}

.paper-preview-wrapper:hover .paper-preview {
    transform: rotateY(0deg) rotateX(0deg);
}

.paper-header {
    text-align: center;
    border-bottom: 2px solid var(--color-text-main);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.paper-logo {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.paper-sub {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

.paper-body {
    display: flex;
    gap: 1rem;
    flex: 1;
}

.paper-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.paper-col-large {
    flex: 2;
    background-color: var(--color-bg);
}

.paper-block {
    background-color: var(--color-bg);
    flex: 1;
}

.paper-image {
    width: 100%;
    height: auto;
    box-shadow: var(--shadow-lg);
    transform: rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-smooth);
    border: 1px solid var(--color-border);
}

.paper-preview-wrapper:hover .paper-image {
    transform: rotateY(0deg) rotateX(0deg);
}

/* ==========================================================================
   Archive Section
   ========================================================================== */

.archives {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .section-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-end;
        margin-bottom: var(--spacing-lg);
    }
}

.section-title {
    font-size: 2rem;
    display: flex;
    flex-direction: column;
}

.title-sub {
    font-family: var(--font-ui);
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.25rem;
}

.archive-controls {
    display: flex;
    align-items: center;
}

.date-picker-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    background-color: var(--color-bg);
    border-radius: 2px;
}

.date-picker-wrapper i {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-right: 0.5rem;
}

.date-picker {
    border: none;
    background: transparent;
    font-family: var(--font-ui);
    font-size: 1rem;
    color: var(--color-text-main);
    outline: none;
    cursor: pointer;
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .archive-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}

.archive-card {
    display: block;
}

.archive-thumbnail {
    width: 100%;
    aspect-ratio: 1 / 1.414;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    margin-bottom: 1rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumbnail-placeholder {
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    opacity: 0.5;
}

.archive-card:hover .archive-thumbnail {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-text-main);
}

.archive-info {
    text-align: center;
}

.archive-day {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.archive-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-family: var(--font-ui);
}

.archive-actions-bottom {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ==========================================================================
   Newsletter Subscription
   ========================================================================== */

.newsletter {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .newsletter {
        padding: var(--spacing-xl) 0;
    }
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-icon {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.newsletter-title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.newsletter-desc {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 600px) {
    .newsletter-form {
        flex-direction: row;
        gap: 0;
    }
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-family: var(--font-ui);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    outline: none;
    transition: border-color var(--transition-fast);
}

@media (min-width: 600px) {
    .newsletter-form input {
        border-right: none;
        border-radius: 2px 0 0 2px;
    }
    
    .newsletter-form button {
        border-radius: 0 2px 2px 0;
    }
}

.newsletter-form input:focus {
    border-color: var(--color-text-main);
}

.subscribe-msg {
    margin-top: 1rem;
    color: #2E7D32;
    font-weight: 500;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background-color: var(--color-text-main);
    color: #FFFFFF;
    padding-top: var(--spacing-xl);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-container {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    height: 48px;
    filter: brightness(0) invert(1);
    margin-bottom: 1.5rem;
}

.footer-fallback {
    color: #FFFFFF;
    margin-bottom: 1.5rem;
}

.footer-mission {
    color: #AAAAAA;
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-heading {
    color: #FFFFFF;
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-ui);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: #AAAAAA;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid #333333;
    border-radius: 50%;
    color: #FFFFFF;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid #222222;
    padding: 1.5rem 0;
    text-align: center;
    color: #888888;
    font-size: 0.85rem;
}

/* ==========================================================================
   PDF Modal
   ========================================================================== */

.pdf-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(17, 17, 17, 0.95);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.pdf-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.pdf-modal-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface);
    transform: translateY(20px);
    transition: transform var(--transition-smooth);
}

@media (min-width: 768px) {
    .pdf-modal-container {
        width: 95%;
        height: 95%;
        border-radius: 4px;
        overflow: hidden;
        box-shadow: 0 24px 64px rgba(0,0,0,0.5);
    }
}

.pdf-modal-overlay.active .pdf-modal-container {
    transform: translateY(0);
}

.pdf-modal-header {
    background-color: var(--color-text-main);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
}

.pdf-modal-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pdf-modal-title {
    font-family: var(--font-ui);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #AAA;
    border-left: 1px solid #444;
    padding-left: 1rem;
    display: none;
}

@media (min-width: 600px) {
    .pdf-modal-title {
        display: block;
    }
}

.pdf-modal-close {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color var(--transition-fast);
}

.pdf-modal-close:hover {
    background-color: rgba(255,255,255,0.1);
}

.pdf-modal-body {
    flex: 1;
    background-color: #f0f0f0;
    position: relative;
    width: 100%;
    height: 100%;
}

.pdf-modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}