:root {
    --bg-color: #050810;
    --text-color: #f0f0f0;
    --primary-color: #ffffff;
    --card-bg: rgba(26, 26, 26, 0.4);
    --border-color: #1a1a1a;
    --highlight-color: #00e5ff; /* Azul-ciano neon */
    --card-shadow: rgba(0, 0, 0, 0.6);
}

html, body {
    height: 100%;
    margin: 0;
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-image: radial-gradient(circle, #0c182c 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Base de Transição para todos os elementos */
* {
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 5%;
    background-color: rgba(5, 8, 16, 0.6);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--border-color);
    top: 0;
    z-index: 1000;
    border-image: linear-gradient(to right, transparent, var(--highlight-color), transparent) 1;
}

.logo img {
    height: 125px;
    width: auto;
    filter: drop-shadow(0 0 10px var(--highlight-color));
    pointer-events: none;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.under-dev-section {
    max-width: 800px;
    margin: auto;
}

.dev-title {
    font-size: 3.5em;
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    text-transform: uppercase;
    text-shadow: 0 0 15px var(--highlight-color);
    margin-bottom: 10px;
    color: var(--text-color);
}

.dev-subtitle {
    font-size: 1.2em;
    color: #a0a0a0;
    margin-bottom: 50px;
}

.countdown-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    padding: 20px 0;
    background-color: rgba(26, 26, 26, 0.4);
    backdrop-filter: blur(8px);
    border-radius: 10px;
    border: 1px solid var(--highlight-color);
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.6);
}

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

.countdown-item span {
    font-size: 4em;
    font-weight: bold;
    font-family: 'Roboto Mono', monospace;
    color: var(--highlight-color);
    text-shadow: 0 0 20px var(--highlight-color);
}

.countdown-item label {
    font-size: 0.9em;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.calendar-btn {
    background-color: transparent;
    color: var(--highlight-color);
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid var(--highlight-color);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
    transition: transform 0.4s ease, box-shadow 0.4s ease, background-color 0.4s ease, color 0.4s ease;
}

.calendar-btn:hover {
    transform: translateY(-5px) scale(1.05);
    background-color: var(--highlight-color);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--highlight-color), 0 0 30px var(--highlight-color);
}

footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color);
    font-family: 'Montserrat', sans-serif;
    color: #a0a0a0;
    margin-top: auto;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
    }
    .dev-title {
        font-size: 2.5em;
    }
    .countdown-item span {
        font-size: 2.5em;
    }
}