:root {
    /* Colors */
    --primary-color: #7b2cbf;
    --secondary-color: #9d4edd;
    --dark-bg: #1a1a1a;
    --dark-card: #242424;
    --dark-border: #333333;
    --text-light: #ffffff;
    --text-gray: #888888;
    --error-color: #dc3545;
    --success-color: #28a745;
    
    /* Fonts */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
}

/* Header Styles */
.header {
    background-color: var(--dark-card);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--dark-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.5rem;
}

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

.logo-text {
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: bold;
}

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

.nav-menu a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--text-light);
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-login {
    color: var(--text-light);
    border: 1px solid var(--primary-color);
}

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

.btn-signup {
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    color: var(--text-light);
}

.btn-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123,44,191,0.3);
}

.btn-logout {
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.btn-logout:hover {
    background: var(--error-color);
    color: var(--text-light);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 73px - 60px); /* viewport height - header - footer */
    padding: 2rem;
}

/* Footer */
.footer {
    background-color: var(--dark-card);
    padding: 1rem 2rem;
    border-top: 1px solid var(--dark-border);
    text-align: center;
    color: var(--text-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .nav-buttons {
        width: 100%;
        justify-content: center;
    }

    .main-content {
        padding: 1rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Hero Banner */
.hero-banner {
    text-align: center;
    padding: 4rem 1rem 2rem;
    position: relative;
}

.exclusive-tag {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark-card);
    color: var(--text-light);
    padding: 0.5rem 2rem;
    border-radius: 0 0 10px 10px;
    font-size: 0.9rem;
}

.hero-banner h1 {
    font-size: 2.5rem;
    color: var(--text-light);
}

.hero-banner .highlight {
    color: var(--secondary-color);
}

/* SMS Buttons */
.sms-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.sms-btn {
    padding: 0.5rem 1.5rem;
    background-color: var(--dark-card);
    border: 1px solid var(--dark-border);
    color: var(--text-light);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sms-btn:hover {
    background-color: var(--dark-border);
    transform: translateY(-2px);
}

/* Plans Container */
.plans-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    flex-wrap: wrap;
    max-width: 1400px;
    margin: 0 auto;
}

.plan-card {
    background-color: var(--dark-card);
    border-radius: 10px;
    padding: 2rem;
    width: 350px;
    position: relative;
    border: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.plan-card:hover {
    transform: translateY(-10px);
}

.limited-offer {
    background-color: #007bff;
    color: var(--text-light);
    padding: 0.5rem;
    text-align: center;
    border-radius: 10px 10px 0 0;
    font-weight: bold;
    margin: -2rem -2rem 1.5rem;
}

.plan-header {
    text-align: center;
    margin-bottom: 1rem;
}

.plan-header h2 {
    font-size: 1.5rem;
    color: var(--text-light);
    background-color: #0d0d0d;
    padding: 0.8rem;
    border-radius: 5px;
}

.plan-price {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin: 1.5rem 0;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.3rem;
}

.plan-price span {
    font-size: 1rem;
    color: var(--secondary-color);
}

.features-section {
    flex-grow: 1;
}

.features-section h3 {
    color: var(--text-gray);
    font-size: 1rem;
    margin: 1.5rem 0 1rem;
}

.feature-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: #e0e0e0;
}

.feature-list li::before {
    content: "";
    width: 16px;
    height: 16px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    flex-shrink: 0;
}

.order-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    border: none;
    border-radius: 5px;
    color: var(--text-light);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1.5rem;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.order-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123,44,191,0.3);
    color: var(--text-light);
    text-decoration: none;
}

/* Form Styles */
.auth-container {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: var(--dark-card);
    border-radius: 10px;
    border: 1px solid var(--dark-border);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-gray);
}

.form-group input {
    padding: 0.8rem;
    border-radius: 5px;
    border: 1px solid var(--dark-border);
    background-color: var(--dark-bg);
    color: var(--text-light);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.auth-button {
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    color: var(--text-light);
    padding: 0.8rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.auth-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123,44,191,0.3);
}

.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.alert-error {
    background-color: #dc3545;
    color: var(--text-light);
}

.alert-success {
    background-color: #28a745;
    color: var(--text-light);
}

/* WhatsApp Button */
.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: #25D366;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 20px;
}

.whatsapp-btn:hover {
    background-color: #128C7E;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
}

.whatsapp-btn i {
    font-size: 1.2em;
}