:root {
    --bg-color: #05050A;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --accent-color: #00f3ff;
    --accent-glow: rgba(0, 243, 255, 0.4);
    --surface-color: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body, html {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    width: 100vw;
    height: 100dvh; /* Use dynamic viewport height for mobile */
    overflow: hidden; /* Prevent scrolling */
    overscroll-behavior: none;
}

/* Background Setup */
.bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.6;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(5, 5, 10, 0.8) 0%,
        rgba(5, 5, 10, 0.3) 50%,
        rgba(5, 5, 10, 0.9) 100%
    );
}

/* Main App Layout */
#app {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    padding: 1.5rem;
    position: relative;
    z-index: 1;
}

/* Header */
header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 1rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface-color);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.logo-img {
    height: 24px;
    width: 24px;
    object-fit: contain;
}

.logo-text {
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Main Content */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 3rem;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, #a0a5b5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 320px;
    margin: 0.5rem auto;
    line-height: 1.5;
    font-weight: 300;
}

.dynamic-text-container {
    height: 2rem;
    overflow: hidden;
    position: relative;
}

.subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--accent-color);
    position: absolute;
    width: 100%;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.subtitle.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

.subtitle.fade-in {
    opacity: 0;
    transform: translateY(10px);
    animation: slideIn 0.5s forwards;
}

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* CTA Button */
.cta-container {
    width: 100%;
    max-width: 300px;
}

.primary-btn {
    width: 100%;
    min-height: 56px;
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border: 1px solid var(--accent-color);
    border-radius: 100px;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px var(--accent-glow);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.primary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 243, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.primary-btn:active::before {
    left: 100%;
}

.btn-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

/* Footer */
footer {
    display: flex;
    justify-content: center;
    padding-bottom: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(0, 243, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 243, 255, 0); }
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 10, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    width: 90%;
    max-width: 400px;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

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

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border-radius: 50%;
    transition: background 0.3s;
}

.close-btn:active {
    background: rgba(255,255,255,0.1);
}

.modal-content h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.modal-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.modal-input {
    width: 100%;
    background: rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    margin-bottom: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.modal-input:focus {
    border-color: var(--accent-color);
}

.modal-btn {
    background: var(--accent-color);
    color: var(--bg-color);
    border: none;
    font-weight: 800;
    box-shadow: 0 0 15px var(--accent-glow);
}

.hidden {
    display: none !important;
}

#success-msg {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: fadeInUp 0.5s forwards;
}

.success-icon {
    width: 48px;
    height: 48px;
}