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

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #7C3AED;
    --accent: #10B981;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --border: #E5E7EB;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(79, 70, 229, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
    position: relative;
}

/* Font loading optimization - use system fonts first, then Inter when loaded */
.fonts-loaded body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -100px;
    right: -100px;
    animation-delay: 5s;
}

.circle-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: -75px;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    33% {
        transform: translate(50px, 50px) scale(1.1);
        opacity: 0.5;
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
        opacity: 0.4;
    }
}

/* Header */
.header {
    padding: 2rem 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.logo-text {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.fonts-loaded .logo-text {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.logo:hover {
    transform: scale(1.05);
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 2;
}

.content-wrapper {
    max-width: 900px;
    width: 100%;
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: linear-gradient(135deg, #FCD34D 0%, #F59E0B 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.1);
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 2rem 1.5rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
    cursor: pointer;
    position: relative;
}

.feature-card:nth-child(1) {
    animation-delay: 0.1s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.feature-link {
    display: inline-block;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    margin-top: 0.5rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-link {
    opacity: 1;
    transform: translateX(3px);
}

/* Signup Section */
.signup-section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.signup-title {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 600;
    color: white;
    margin-bottom: 1.5rem;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.1);
}

.signup-form {
    max-width: 500px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 0.75rem;
    padding: 0.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.input-group:focus-within {
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

.email-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    font-family: inherit;
}

.email-input::placeholder {
    color: var(--text-secondary);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-family: inherit;
    white-space: nowrap;
}

.submit-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(79, 70, 229, 0.4);
}

.submit-btn:active {
    transform: scale(0.98);
}

.submit-btn svg {
    transition: transform 0.3s ease;
}

.submit-btn:hover svg {
    transform: translateX(3px);
}

.form-message {
    margin-top: 1rem;
    font-size: 0.9rem;
    min-height: 1.5rem;
    color: white;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

.form-message.success {
    color: #10B981;
}

.form-message.error {
    color: #EF4444;
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Footer */
.footer {
    padding: 2rem 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    position: relative;
    z-index: 2;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem 1rem;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }

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

    .feature-card {
        padding: 1.5rem 1rem;
    }

    .input-group {
        flex-direction: column;
        padding: 0.75rem;
    }

    .email-input {
        padding: 0.875rem 1rem;
    }

    .submit-btn {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
    }

    .social-links {
        gap: 1rem;
    }

    .social-link {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .signup-title {
        font-size: 1.1rem;
    }

    .modal-content {
        padding: 2rem 1.5rem;
        max-height: 95vh;
    }

    .modal-title {
        font-size: 1.75rem;
    }

    .modal-icon {
        font-size: 3rem;
    }

    .modal-description {
        font-size: 1rem;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 1.5rem;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 100%);
    backdrop-filter: blur(20px);
    border-radius: 1.5rem;
    padding: 2.5rem;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
    z-index: 1001;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    z-index: 1002;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(90deg);
}

.modal-icon {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.modal-body {
    color: var(--text-primary);
}

.modal-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 2rem;
}

.modal-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.modal-features li {
    margin-bottom: 1.5rem;
    padding-left: 0;
}

.modal-features li:last-child {
    margin-bottom: 0;
}

.modal-features li strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.modal-features li p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

/* Modal Scrollbar Styling */
.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* Loading State */
.submit-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.submit-btn.loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}