@import url('../../assets/css/fonts.css');

:root {
    --bg-deep: #030307;
    --card-bg: rgba(20, 22, 30, 0.4);
    --card-border: rgba(255, 255, 255, 0.08);
    --primary-accent: #00f0ff;
    --secondary-accent: #7000ff;
    --text-main: #f8fafc;
    --glass-blur: blur(20px);
    --neon-glow: 0 0 30px rgba(0, 240, 255, 0.25);
}

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

body, html {
    font-family: 'Lato', sans-serif;
    background-color: var(--bg-deep);
    color: var(--text-main);
    min-height: 100vh;
    display: flex; 
    justify-content: center; 
    align-items: center;
    overflow-x: hidden; 
    position: relative;
    padding: 20px;
}

/* Animations des orbes en arrière-plan */
body::before, body::after {
    content: ''; position: fixed;
    width: 50vw; height: 50vw; border-radius: 50%;
    filter: blur(120px); z-index: 0; opacity: 0.4;
    pointer-events: none;
    animation: floatOrb 20s infinite alternate ease-in-out;
}
body::before { background: radial-gradient(circle, var(--secondary-accent) 0%, transparent 70%); top: -20%; left: -10%; }
body::after { background: radial-gradient(circle, var(--primary-accent) 0%, transparent 70%); bottom: -20%; right: -10%; animation-delay: -10s; }

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 10%) scale(1.2); }
}

/* Conteneur principal façon Glassmorphism */
.converter-container {
    background: var(--card-bg); 
    backdrop-filter: var(--glass-blur); 
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border); 
    border-radius: 20px; 
    padding: 40px; 
    box-shadow: 0 20px 40px rgba(0,0,0,0.6), var(--neon-glow);
    text-align: center;
    width: 100%;
    max-width: 850px;
    position: relative; 
    z-index: 1; 
    overflow: hidden;
}

/* Effet de reflet sur le panel */
.converter-container::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.03), transparent);
    transform: skewX(-20deg); transition: 0.7s ease;
}
.converter-container:hover::before { left: 150%; }

/* Titre stylisé */
h1 {
    font-family: 'Exo 2', sans-serif; 
    margin: 0 0 35px 0; 
    font-size: 2em; 
    text-align: center; 
    text-transform: uppercase; 
    background: linear-gradient(135deg, #fff, var(--primary-accent)); 
    -webkit-background-clip: text; 
    background-clip: text; 
    -webkit-text-fill-color: transparent; 
    border-bottom: 1px solid var(--card-border); 
    padding-bottom: 12px; 
    letter-spacing: 2px;
}

.converter {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 200px;
}

/* Champs de texte et sélecteurs */
input[type="number"], select {
    padding: 14px 16px;
    background: rgba(0,0,0,0.5); 
    color: #fff; 
    border: 1px solid var(--card-border); 
    border-radius: 8px; 
    font-family: inherit; 
    font-size: 1.05rem;
    width: 100%;
    margin-top: 8px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    transition: all 0.3s ease;
}

/* Icône de flèche de sélection colorée en neon cyan */
select {
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2300f0ff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 0.75em;
    padding-right: 2.5em;
}

select:focus, input:focus {
    outline: none;
    border-color: var(--primary-accent); 
    box-shadow: inset 0 0 10px rgba(0,240,255,0.2), 0 0 15px rgba(0,240,255,0.4);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

/* Bouton d'inversion des unités */
#swap-button {
    padding: 0;
    width: 55px;
    height: 55px;
    font-size: 1.8rem;
    cursor: pointer;
    background: linear-gradient(45deg, rgba(0,240,255,0.1), rgba(112,0,255,0.1));
    color: #fff;
    border: 1px solid var(--primary-accent);
    border-radius: 50%;
    line-height: 55px;
    text-align: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-bottom: 2px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

#swap-button::before { 
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; 
    background: linear-gradient(45deg, var(--primary-accent), var(--secondary-accent)); 
    z-index: -1; opacity: 0; transition: opacity 0.3s ease; 
}

#swap-button:hover::before { opacity: 1; }
#swap-button:hover { 
    box-shadow: 0 0 25px rgba(0,240,255,0.6); 
    transform: scale(1.05); 
    border-color: transparent; 
}

#output-value {
    background-color: rgba(10, 12, 18, 0.6);
    cursor: default;
}

/* Messages d'erreur stylisés */
.error {
    color: #ff0055;
    margin-top: 20px;
    font-size: 0.95em;
    min-height: 1.3em;
    text-align: center;
    width: 100%;
    text-shadow: 0 0 10px rgba(255, 0, 85, 0.5);
}

@media (max-width: 650px) {
    .converter {
        flex-direction: column;
        align-items: stretch;
        gap: 25px;
    }
    #swap-button {
       margin: 0 auto;
    }
    .input-group {
        width: 100%;
        min-width: unset;
    }
    .converter-container {
        padding: 30px 25px;
    }
}