@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --bg-light: #f1f5f9; /* Slate 100 */
    --card-bg: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.4);
    --accent-primary: #6366f1; /* Indigo */
    --accent-secondary: #06b6d4; /* Cyan */
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #f43f5e;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --glass-blur: blur(25px);
    --shadow-main: 0 10px 40px rgba(99, 102, 241, 0.1);
}

/* Modo Oscuro Overrides */
.dark-theme {
    --bg-light: #09090b; /* Zinc 950 */
    --card-bg: rgba(24, 24, 27, 0.8);
    --border-color: rgba(255, 255, 255, 0.05);
    --text-main: #fafafa;
    --text-muted: #a1a1aa;
    --shadow-main: 0 10px 40px rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
    position: relative;
    /* Mesh Gradient Vibrante */
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.15) 0, transparent 50%),
        radial-gradient(at 80% 20%, rgba(244, 63, 94, 0.08) 0, transparent 40%);
}

.app-container {
    width: 100%;
    max-width: 850px;
    animation: entrance 0.8s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes entrance {
    from { opacity: 0; transform: translateY(40px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

header {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.header-main {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    width: 100%;
}

h1 {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -3px;
    background: linear-gradient(135deg, #1e293b 30%, #6366f1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-actions button {
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-actions button:hover {
    transform: rotate(15deg) scale(1.1);
    color: var(--accent-primary);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.2);
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    box-shadow: var(--shadow-main);
}

.status-badge i { color: var(--accent-success); }

/* Ticker Bento Grid */
.ticker-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.ticker-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 28px;
    box-shadow: var(--shadow-main);
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.ticker-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 6px;
}

.ticker-card:nth-child(1)::after { background: var(--accent-success); }
.ticker-card:nth-child(2)::after { background: var(--accent-primary); }
.ticker-card:nth-child(3)::after { background: var(--accent-warning); }

.ticker-card:hover {
    transform: translateY(-8px);
    background: white;
}

.ticker-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    display: block;
}

.ticker-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-main);
}

/* Calculator Layout */
.main-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    padding: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    box-shadow: 0 30px 60px -12px rgba(99, 102, 241, 0.15);
}

.config-section h2, .results-section h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 30px;
    letter-spacing: -1px;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 10px;
    display: block;
}

input, select {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    border-radius: 18px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    transition: all 0.3s;
}

.dark-theme input, .dark-theme select {
    background: rgba(39, 39, 42, 0.5);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 5px rgba(99, 102, 241, 0.1);
}

/* Results */
.results-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-item {
    background: var(--card-bg);
    padding: 24px;
    border-radius: 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.dark-theme .result-item {
    background: rgba(39, 39, 42, 0.3);
}

.result-item:hover {
    transform: scale(1.02);
    border-color: rgba(99, 102, 241, 0.1);
}

.res-currency {
    font-weight: 600;
    color: var(--text-muted);
}

.res-amount {
    font-size: 1.4rem;
    font-weight: 900;
}

.res-amount small { font-weight: 500; font-size: 0.9rem; opacity: 0.6; }

.res-emerald { color: var(--accent-success); }
.res-indigo { color: var(--accent-primary); }
.res-amber { color: var(--accent-warning); }
.res-red { color: var(--accent-danger); }
/* Animación de Rotación para el icono de actualizar */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.spinning i {
    animation: spin 1s linear infinite;
}

/* Responsive */
@media (max-width: 800px) {
    .main-card { grid-template-columns: 1fr; padding: 30px; }
    .ticker-grid { grid-template-columns: 1fr; }
    h1 { font-size: 2.5rem; }
}