:root {
    --color-primary-50: #ecfdf5;
    --color-primary-100: #d1fae5;
    --color-primary-200: #a7f3d0;
    --color-primary-300: #6ee7b7;
    --color-primary-400: #34d399;
    --color-primary-500: #10b981;
    --color-primary-600: #059669;
    --color-primary-700: #047857;
    --color-primary-800: #065f46;
    --color-primary-900: #064e3b;

    --color-secondary-50: #e0f2fe;
    --color-secondary-100: #bae6fd;
    --color-secondary-200: #7dd3fc;
    --color-secondary-300: #38bdf8;
    --color-secondary-400: #0ea5e9;
    --color-secondary-500: #0284c7;
    --color-secondary-600: #0369a1;
    --color-secondary-700: #075985;
    --color-secondary-800: #0c4a6e;
    --color-secondary-900: #082f49;

    --color-tertiary-50: #fdf2f8;
    --color-tertiary-100: #fce7f3;
    --color-tertiary-200: #fbcfe8;
    --color-tertiary-300: #f9a8d4;
    --color-tertiary-400: #f472b6;
    --color-tertiary-500: #ec4899;
    --color-tertiary-600: #db2777;
    --color-tertiary-700: #be185d;
    --color-tertiary-800: #9d174d;
    --color-tertiary-900: #831843;

    --color-success-500: #22c55e;
    --color-warning-500: #f59e0b;
    --color-error-500: #ef4444;

    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    --color-background: #ffffff;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-border: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.08);

    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --border-radius-sm: 0.25rem;
    --border-radius: 0.5rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;

    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
}

.dark {
    --color-background: #111827;
    --color-text: #f3f4f6;
    --color-text-muted: #9ca3af;
    --color-border: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: var(--transition-normal);
    overflow-x: hidden;
}

a {
    color: var(--color-primary-600);
    text-decoration: none;
    transition: var(--transition-normal);
}

a:hover {
    color: var(--color-primary-700);
}

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

button {
    cursor: pointer;
    font-family: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    z-index: 1000;
}

.theme-toggle button {
    background: none;
    border: none;
    color: var(--color-text);
    padding: var(--spacing-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.theme-toggle button:hover {
    transform: rotate(15deg);
    background-color: var(--color-primary-100);
    color: var(--color-primary-600);
}

.dark .theme-toggle button:hover {
    background-color: var(--color-gray-700);
    color: var(--color-primary-300);
}

.theme-toggle .sun {
    display: none;
}

.theme-toggle .moon {
    display: block;
}

.dark .theme-toggle .sun {
    display: block;
}

.dark .theme-toggle .moon {
    display: none;
}

/* Particles */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    pointer-events: none;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--spacing-4) 0;
    transition: var(--transition-normal);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.dark .header {
    background-color: rgba(17, 24, 39, 0.8);
}

.header.scrolled {
    padding: var(--spacing-2) 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
}

.dark .header.scrolled {
    background-color: rgba(17, 24, 39, 0.95);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.logo-icon {
    color: var(--color-primary-500);
}

.nav ul {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.nav a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition-normal);
}

.nav a:not(.btn):hover {
    color: var(--color-primary-600);
}

.dark .nav a:not(.btn):hover {
    color: var(--color-primary-400);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-2);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-normal);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary-500);
    color: white;
    border: 1px solid var(--color-primary-500);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--color-primary-600);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-outline:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-300);
    color: var(--color-text);
    transform: translateY(-2px);
}

.dark .btn-outline {
    color: var(--color-gray-200);
    border-color: var(--color-gray-700);
}

.dark .btn-outline:hover {
    background-color: var(--color-gray-800);
    border-color: var(--color-gray-600);
    color: white;
}

/* Hero Section */
.hero {
    padding: calc(var(--spacing-20) + 60px) 0 var(--spacing-20) 0;
    position: relative;
}

@media only screen and (max-width: 600px) {
    hero {
        overflow: hidden;
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-10);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-6);
    color: var(--color-text-muted);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background-color: #111;
    border-radius: 40px;
    padding: 10px;
    position: relative;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.phone-screen {
    background-color: #E5DDD5;
    border-radius: 30px;
    height: 100%;
    width: 100%;
    overflow: hidden;
    padding: 20px 15px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.dark .phone-screen {
    background-color: #0D1418;
}

.message-bubble {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.message-bubble p {
    margin: 0;
    font-size: 0.9rem;
}

.message-bubble .time {
    font-size: 0.7rem;
    opacity: 0.7;
    text-align: right;
    margin-top: 4px;
}

.message-bubble.incoming {
    background-color: white;
    color: #262626;
    border-top-left-radius: 0;
    align-self: flex-start;
}

.dark .message-bubble.incoming {
    background-color: #202C33;
    color: #E9EDF0;
}

.message-bubble.outgoing {
    background-color: #DCF8C6;
    color: #262626;
    border-top-right-radius: 0;
    align-self: flex-end;
}

.dark .message-bubble.outgoing {
    background-color: #005C4B;
    color: #E9EDF0;
}

.message-bubble.typing {
    width: 70px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.message-bubble.typing .dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-gray-400);
    border-radius: 50%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
}

.shape-1 {
    width: 400px;
    height: 400px;
    background-color: rgba(16, 185, 129, 0.15);
    top: -100px;
    left: -200px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background-color: rgba(14, 165, 233, 0.15);
    bottom: -150px;
    right: -100px;
}

/* Countdown */
.countdown-container {
    margin-top: var(--spacing-6);
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-glass);
    border: 1px solid var(--color-border);
}

.dark .countdown-container {
    background-color: rgba(31, 41, 55, 0.7);
    border-color: var(--color-gray-700);
}

.countdown-container h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-4);
    text-align: center;
    font-weight: 600;
}

.countdown {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-4);
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.countdown-item span:first-child {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary-600);
}

.dark .countdown-item span:first-child {
    color: var(--color-primary-400);
}

.countdown-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-1);
}

/* Features Section */
.features {
    padding: var(--spacing-20) 0;
    position: relative;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

.feature-card {
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-6);
    text-align: center;
    box-shadow: var(--shadow-glass);
    transition: var(--transition-normal);
    border: 1px solid var(--color-border);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.dark .feature-card {
    background-color: rgba(31, 41, 55, 0.7);
    border-color: var(--color-gray-700);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--color-primary-50);
    color: var(--color-primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
}

.dark .feature-icon {
    background-color: var(--color-gray-800);
    color: var(--color-primary-400);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-3);
    font-weight: 600;
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Newsletter Section */
.newsletter {
    padding: var(--spacing-16) 0;
    background-color: var(--color-primary-50);
    position: relative;
}

.dark .newsletter {
    background-color: var(--color-gray-800);
}

.newsletter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%2310b981' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.newsletter-content p {
    margin-bottom: var(--spacing-6);
    color: var(--color-text-muted);
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background-color: white;
    color: var(--color-text);
    transition: var(--transition-normal);
}

.dark .newsletter-form input {
    background-color: var(--color-gray-900);
    border-color: var(--color-gray-700);
    color: var(--color-gray-200);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-primary-400);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.form-message {
    font-size: 0.9rem;
    min-height: 20px;
}

/* Contact Section */
.contact {
    padding: var(--spacing-20) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-10);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.contact-item svg {
    color: var(--color-primary-500);
    flex-shrink: 0;
    margin-top: 3px;
}

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-1);
    font-weight: 600;
}

.contact-item p {
    color: var(--color-text-muted);
}

.social-links {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    background-color: var(--color-gray-100);
    border-radius: 50%;
    transition: var(--transition-normal);
}

.dark .social-link {
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
}

.social-link:hover {
    background-color: var(--color-primary-500);
    color: white;
    transform: translateY(-3px);
}

.contact-form {
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-glass);
    border: 1px solid var(--color-border);
}

.dark .contact-form {
    background-color: rgba(31, 41, 55, 0.7);
    border-color: var(--color-gray-700);
}

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background-color: white;
    color: var(--color-text);
    transition: var(--transition-normal);
}

.dark .form-group input,
.dark .form-group textarea {
    background-color: var(--color-gray-900);
    border-color: var(--color-gray-700);
    color: var(--color-gray-200);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-400);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* Footer */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-10);
    flex-wrap: wrap;
    gap: var(--spacing-8);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.footer-logo h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-12);
    flex-wrap: wrap;
}

.footer-links-column h3 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--spacing-4);
    font-weight: 600;
}

.footer-links-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-links-column a {
    color: var(--color-gray-400);
    font-size: 0.9rem;
    transition: var(--transition-normal);
}

.footer-links-column a:hover {
    color: var(--color-primary-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-800);
}

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--color-gray-500);
}

.footer-social {
    display: flex;
    gap: var(--spacing-3);
}

.footer-social a {
    color: var(--color-gray-500);
    transition: var(--transition-normal);
}

.footer-social a:hover {
    color: var(--color-primary-400);
    transform: translateY(-2px);
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(90deg, var(--color-primary-500), var(--color-secondary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Media Queries */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-image {
        order: -1;
        margin-bottom: var(--spacing-8);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer-top {
        flex-direction: column;
        gap: var(--spacing-8);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }

    .newsletter-form .form-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.5rem;
    }

    .countdown {
        gap: var(--spacing-2);
    }

    .countdown-item span:first-child {
        font-size: 1.5rem;
    }

    .countdown-label {
        font-size: 0.7rem;
    }
}