:root {
    --color-black: #050505;
    --color-deep-blue: #0a0e17;
    --color-royal-blue: #102a5e;
    --color-gold: #d4af37;
    --color-gold-dim: #8a7020;
    --color-silver: #c0c0c0;
    --color-silver-dim: #777777;
    --font-main: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --easing: cubic-bezier(0.25, 1, 0.5, 1);
}

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

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-black);
    color: var(--color-silver);
    font-family: var(--font-main);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#app-container {
    width: 100%;
    height: 100%;
    max-width: 600px;
    max-height: 900px;
    background: linear-gradient(180deg, var(--color-black) 0%, var(--color-deep-blue) 100%);
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 0 50px rgba(16, 42, 94, 0.5);
}

#visualizer-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.6;
    pointer-events: none;
}

header {
    z-index: 10;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

h1 {
    margin: 0;
    font-size: 1.2rem;
    letter-spacing: 2px;
    color: var(--color-gold);
    text-transform: uppercase;
}

main {
    z-index: 10;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
    gap: 20px;
}

.input-group {
    width: 100%;
    position: relative;
}

input[type="text"] {
    width: 100%;
    background: rgba(10, 14, 23, 0.8);
    border: 1px solid var(--color-silver-dim);
    color: var(--color-gold);
    padding: 15px;
    font-size: 1.2rem;
    text-align: center;
    border-radius: 4px;
    outline: none;
    transition: all 0.3s var(--easing);
    text-transform: uppercase;
    letter-spacing: 1px;
}

input[type="text"]:focus {
    border-color: var(--color-gold);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}

.btn-main {
    background: linear-gradient(45deg, var(--color-royal-blue), var(--color-black));
    border: 1px solid var(--color-gold);
    color: var(--color-gold);
    padding: 15px 30px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 2px;
    transition: transform 0.1s, box-shadow 0.3s;
    width: 100%;
    max-width: 300px;
    margin-top: 10px;
}

.btn-main:active {
    transform: scale(0.98);
    box-shadow: 0 0 5px var(--color-gold);
}

#result-panel {
    display: none;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--color-silver-dim);
    padding: 15px;
    border-radius: 8px;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.5s var(--easing);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.data-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 4px;
}

.data-label { color: var(--color-silver-dim); }
.data-value { color: var(--color-gold); font-weight: bold; text-align: right; }
.data-value.freq { font-size: 1.1rem; color: #fff; }

.module-section {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px dashed var(--color-silver-dim);
}

.module-title {
    color: var(--color-gold);
    font-size: 0.8rem;
    text-transform: uppercase;
    margin-bottom: 5px;
    display: block;
}

#freq-bars {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    height: 60px;
    gap: 4px;
    margin-top: 10px;
}
.bar {
    width: 6px;
    background: var(--color-gold);
    height: 5px;
    border-radius: 2px;
    transition: height 0.1s linear;
}

footer {
    z-index: 10;
    padding: 10px;
    text-align: center;
    font-size: 0.7rem;
    color: var(--color-silver-dim);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-black); }
::-webkit-scrollbar-thumb { background: var(--color-silver-dim); border-radius: 3px; }