:root {
    /* Base Colors - Same for both */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --glass-blur: blur(12px);
    
    /* Dark Theme (Default) */
    --bg-main: #0f172a;
    --bg-gradient: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0, transparent 50%),
                  radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.15) 0, transparent 50%);
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --nav-bg: rgba(15, 23, 42, 0.8);
    --input-bg: rgba(15, 23, 42, 0.5);
    --modal-overlay: rgba(15, 23, 42, 0.8);
    --feature-card-bg: rgba(255, 255, 255, 0.03);
    --btn-secondary-bg: rgba(255, 255, 255, 0.1);
    --btn-secondary-text: #ffffff;
    --btn-secondary-hover: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-gradient: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0, transparent 50%),
                  radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.1) 0, transparent 50%);
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-main: #0f172a;
    --text-muted: #475569;
    --border-color: rgba(0, 0, 0, 0.1);
    --nav-bg: rgba(255, 255, 255, 0.8);
    --input-bg: rgba(255, 255, 255, 1);
    --modal-overlay: rgba(0, 0, 0, 0.4);
    --feature-card-bg: rgba(255, 255, 255, 0.8);
    --btn-secondary-bg: rgba(0, 0, 0, 0.05);
    --btn-secondary-text: var(--text-main);
    --btn-secondary-hover: rgba(0, 0, 0, 0.1);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    background-image: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navbar */
.navbar {
    background: var(--nav-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.2s;
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(15deg);
}

[data-theme="light"] .theme-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}


.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 800;
    font-size: 1.5rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Main Content */
.main-content, .page-content {
    flex: 1;
    padding: 3rem 1rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.page-content p {
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Email Box */
.email-box {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.email-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--input-bg);
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.email-display input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    font-weight: 600;
    outline: none;
}

.btn {
    cursor: pointer;
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 2rem;
    font-weight: 700;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
}

.actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* Mailbox */
.mailbox-container {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    min-height: 400px; /* Prevent shrinking */
    display: flex;
    flex-direction: column;
}

.email-list {
    flex: 1; /* Occupy remaining space */
    list-style: none;
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.mailbox-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.email-item {
    display: flex;
    align-items: stretch;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.email-content {
    flex: 1;
    padding: 1.25rem 2rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    text-decoration: none;
    color: inherit;
}

.email-content:hover {
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="light"] .email-content:hover {
    background: rgba(0, 0, 0, 0.02);
}

.email-controls {
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-left: 1px solid var(--border-color);
}

.view-new-tab {
    color: var(--text-muted);
    font-size: 1.1rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-new-tab:hover {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

/* Footer */
.footer {
    background: var(--nav-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
    text-align: center;
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Static Pages Styles */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: var(--feature-card-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    text-align: center;
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
}

.contact-form {
    margin: 2rem 0;
    max-width: 600px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 0.75rem;
    color: var(--text-main);
    outline: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
}

.contact-info {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
}

.mobile-menu-btn {
    display: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-content {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    border-radius: 1.5rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-body {
    padding: 2rem;
    overflow-y: auto;
    background: var(--card-bg);
    color: var(--text-main);
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    

    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
        font-size: 1.5rem;
        cursor: pointer;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .email-display {
        flex-direction: column;
        padding: 1rem;
    }
    
    .email-display input {
        text-align: center;
        width: 100%;
    }
    
    .email-display button {
        width: 100%;
    }
}
/* FAQ Section */
.faq-section {
    margin: 4rem 0;
}

.faq-title {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 2.5rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.2);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-main);
    user-select: none;
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--primary-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0, 1, 0, 1);
    background: rgba(15, 23, 42, 0.2);
}

[data-theme="light"] .faq-answer {
    background: rgba(255, 255, 255, 0.1);
}

.faq-answer-content {
    padding: 1.5rem 2rem;
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 1rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    transition: all 0.3s cubic-bezier(1, 0, 1, 0);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

@media (max-width: 768px) {
    .faq-title {
        font-size: 1.75rem;
    }
    .faq-question {
        padding: 1.25rem 1.5rem;
        font-size: 1rem;
    }
}

/* Ad Container Styles */
.ad-wrapper {
    margin: 2rem auto;
    padding: 1.5rem;
    max-width: 100%;
    text-align: center;
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.ad-wrapper:hover {
    transform: translateY(-2px);
}

.ad-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.6;
}

@media (max-width: 768px) {
    .ad-wrapper {
        padding: 1rem;
        margin: 1.5rem auto;
    }
}