/* GENERAL */

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

body {
    background-image: url("IMG/Fondo.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    text-align: center;
}

/* HEADER */

header {
    margin-top: 70px;
}

h1 img {
    width: 30%;
    max-width: 300px;
    display: block;
    margin: 20px auto;
}

h2 img {
    width: 100%;
    max-width: 580px;
    display: block;
    margin: 25px auto;
}

/* INPUT Y BOTÓN */

.form-box {
    position: relative;
    width: 760px;
    margin-top: 20px;
}

.form-box form {
    position: relative;
    display: flex;
    align-items: center;
}

.form-box input {
    width: 100%;
    padding: 20px 100px 20px 20px;
    border-radius: 10px;
    border: none;
    outline: none;
    height: 50px;
}

.form-box button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    padding: 8px 15px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    background-color: rgb(57, 57, 153);
    color: white;
    z-index: 10;
    height: 40px;
}

.form-box input {
    border: 2px solid transparent;
    transition: 0.3s;
}

.form-box input:focus {
    border: 2px solid #fff;
    box-shadow: 0 0 12px #ffffffaa;
}

input::placeholder {
    font-style: italic;
    font-family: "Montserrat", sans-serif;
}

button {
    font-family: "Montserrat", sans-serif;
    font-weight: bold;
    font-style: italic;
    font-size: medium;
}

.btn-submit:hover {
    background-color: #7273b4;
}

/* INICIO: ESTILOS CONTADOR FLIP-CARD */

.flip-countdown {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    font-family: sans-serif;
    perspective: 1000px;
}

.time-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.digit-container {
    display: flex;
}

.label {
    color: #fff;
    font-size: 0.6em;
    font-weight: 300;
    margin-bottom: 2px;
}

.flip-card {
    position: relative;
    width: 30px;
    height: 45px;
    background-color: #333;
    color: #fff;
    font-size: 1.8em;
    font-weight: bold;
    border-radius: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    overflow: hidden;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
    line-height: 1;
}

.flip-card:first-child {
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
}

.flip-card:last-child {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

/* LINEA DE SEPARACIÓN */
.flip-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: rgba(0, 0, 0, 0.2);
    transform: translateY(-50%);
    z-index: 10;
}

/* MITAD DE ANIMACIONES */
.top-half,
.bottom-half,
.new-top-half {
    position: absolute;
    width: 100%;
    height: 50%;
    background-color: #333;
    overflow: hidden;
    display: flex;
    justify-content: center;
    color: #fff;
    font-size: 1em;
    font-weight: bold;
    line-height: 1.8;
}

/* MITAD SUPERIOR (NUMERO ACTUAL MUESTRA) */
.top-half {
    top: 0;
    align-items: flex-end;
    border-radius: inherit;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    z-index: 20;
}

/* MITAD INFERIOR (MUESTRA EL NUEVO NUMERO) */
.bottom-half {
    bottom: 0;
    align-items: flex-start;
    /* Ajuste de bordes */
    border-radius: inherit;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    background-color: #222;
}

/* MITAD SUPERIOS (INICIO DE ANIMACION) */
.new-top-half {
    top: 0;
    align-items: flex-end;
    border-radius: inherit;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    transform-origin: bottom;
    transform: rotateX(0deg);
    z-index: 30;
    background-color: #444;
    animation: flip-top 0.4s ease-in;
}

@keyframes flip-top {
    0% {
        transform: rotateX(0deg);
    }

    100% {
        transform: rotateX(-90deg);
    }
}

.finished-message {
    color: #fff;
    font-size: 1.5em;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

/* ICONOS REDES */

.social {
    margin-top: 70px;
    display: flex;
    gap: 25px;
    justify-content: center;
}

.social img {
    width: 35px;
    height: 35px;
    object-fit: contain;
    image-rendering: auto;
    transition: 0.2s;
}

.social img:hover {
    transform: scale(1.1);
}

/* RESPONSIVE */

@media (max-width: 800px) {

    body {
        justify-content: space-between;
    }

    main {
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
        width: 100%;
        margin-bottom: 20px;
    }

    header {
        margin-top: 40px;
    }

    .form-box {
        width: 95%;
        max-width: 550px;
        margin-top: 15px;
        margin-left: auto;
        margin-right: auto;
    }

    .form-box input {
        padding: 15px 100px 15px 15px;
        height: 60px;
        font-size: 16px;
    }

    .form-box button {
        height: 50px;
        padding: 0 10px;
        font-size: small;
        min-width: 95px;
        right: 5px; 
    }

    .form-box button.loading {
        width: 95px;
        height: 50px; 
    }

    h1 img {
        max-width: 130px;
        width: 60%;
    }

    h2 img {
        max-width: 350px;
        width: 80%;
    }

    .social {
        margin-top: auto;
        margin-bottom: 80px;
        gap: 30px;
    }

    .social img {
        width: 40px;
        height: 40px;
    }

    /* INICIO: RESPONSIVE CONTADOR */
    .flip-countdown {
        gap: 6px;
        margin-top: 50px;
    }

    .flip-card {
        width: 25px;
        height: 35px;
        font-size: 1.4em;
    }

    .label {
        font-size: 0.5em;
    }

    /* FIN: RESPONSIVE CONTADOR */
}

/* ANIMACION BOTON ENVIAR */

.loading {
    font-size: 0;
    text-align: center;
    position: relative;
    pointer-events: none;
    padding: 0;
    transition: width 0.3s, height 0.3s;
}

.form-box button.loading {
    width: 90px; 
    height: 40px; 
    padding: 0; 
    font-size: 0; 
    min-width: 95px;
}

.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000;
    border-radius: 50%;
    animation: spinner 0.8s linear infinite;
}

.sent {
    background-color: rgb(67, 112, 54) !important;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    color: #000;
    font-style: italic;
    font-weight: bold;
    pointer-events: none;
    transition: 0.5s;
}

@keyframes spinner {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}