/* Global Styles */
:root {
    --primary-color: #1a73e8;
    --secondary-color: #34a853;
    --accent-color: #fbbc05;
    --danger-color: #ea4335;
    --text-color: #333;
    --light-text: #666;
    --border-color: #ddd;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* Container Width */
.container {
    max-width: 1050px;
}

/* Typography */
body {
    color: var(--text-color);
    line-height: 1.6;
    font-family: 'Inter', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

/* Navigation Styles */
.navbar-nav .nav-link {
    position: relative;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    margin: 0 0.2rem;
    color: rgba(255,255,255,.8) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 100%;
}

.navbar-nav .nav-link.active {
    color: #fff !important;
    font-weight: 500;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

/* Advertisement Spaces */
.ad-placeholder {
    height: auto;
    min-height: auto;
    background-color: var(--light-bg);
    border: 1px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    margin: 1rem 0;
    padding: 1rem;
}

/* Email Interface Styles */
.email-header {
    font-size: 0.9rem;
    background-color: #cdf0f7;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.email-item {
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
    cursor: pointer;
    transition: var(--transition);
}

.email-item:last-child {
    border-bottom: none;
}

.email-item:hover {
    background-color: rgba(26,115,232,0.05);
}

.email-item.unread {
    font-weight: bold;
}

.email-item .email-content {
    display: none;
    padding: 10px;
    background-color: var(--light-bg);
    border-radius: 5px;
    margin-top: 10px;
}

.email-item.expanded .email-content {
    display: block;
}

/* Icons and Indicators */
.email-item .fa-envelope {
    margin-right: 10px;
    color: var(--light-text);
}

.email-item.unread .fa-envelope {
    color: var(--primary-color);
}

/* Empty State Styles */
#emptyInboxMessage {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
}

#emptyInboxMessage .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.25em;
    animation: spin 1s linear infinite;
}

#emptyInboxMessage p {
    margin-top: 1rem;
    font-size: 1.1rem;
    color: var(--light-text);
}

/* Button Styles */
.btn-group {
    display: flex;
    gap: 0.5rem;
}

.btn-group .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

/* Timer Section */
.timer-section {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.timer-display {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 0.5rem 0;
    font-family: monospace;
}

/* Card and Box Styles */
.feature-box, .content-box {
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.benefits-box {
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #1a73e8;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.step-item {
    text-align: center;
    padding: 1.5rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
}

.step-number {
    background: #1a73e8;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.solution-item {
    padding: 1.5rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.solution-item h4 {
    color: #1a73e8;
    margin-bottom: 1rem;
}

@media (max-width: 768px) {

    .steps-grid,
    .solution-grid {
        grid-template-columns: 1fr;
    }
}

/* List Styles */
.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li:before {
    content: "✓";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/*Sidebar */

.sidebar-info-box {
    border-left: 4px solid var(--primary-color);
}

.tip-item {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-color);
}

.tips-list .fas {
    width: 20px;
}

.list-group-item {
    transition: var(--transition);
}

.list-group-item:hover {
    background-color: var(--light-bg);
    transform: translateX(5px);
}

@media (max-width: 991.98px) {
    .sticky-top {
        position: relative !important;
        top: 0 !important;
    }
}


/* Grid Layouts */
.features-grid, .articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

/* Article Styles (for future blog posts) */
.article-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-content {
    padding: 1.5rem;
}

.article-meta {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

/* Pagination Styles */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.pagination .page-item .page-link {
    color: var(--primary-color);
    border-radius: 4px;
    transition: var(--transition);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Modal Styles */
.modal-content {
    border-radius: 8px;
    border: none;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}

/* Form Styles */
.form-control {
    border-radius: 4px;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(26,115,232,0.25);
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive Styles */
@media (max-width: 991.98px) {
    .navbar-nav {
        padding-top: 1rem;
        border-top: 1px solid rgba(255,255,255,.1);
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-radius: 4px;
    }
    
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
        background-color: rgba(255,255,255,0.1);
    }
    
    .navbar-nav .nav-link::after {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .btn-group {
        flex-wrap: wrap;
    }
    
    .timer-display {
        font-size: 2rem;
    }
    
    .features-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-image {
        height: 180px;
    }
}

@media (max-width: 575.98px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .container {
        width: 100%;
        max-width: none;
    }
}

/* Accessibility Styles */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Dark Mode Support for Future Use */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #e1e1e1;
        --light-text: #b0b0b0;
        --border-color: #444;
        --light-bg: #222;
        --dark-bg: #1a1a1a;
        --box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }
}