:root {
    --color-bg: #0a0a0f;
    --color-surface: #0d1117;
    --color-green: #00ff41;
    --color-green-15: rgba(0, 255, 65, 0.15);
    --color-green-05: rgba(0, 255, 65, 0.05);
    --color-cyan: #00e5ff;
    --color-cyan-30: rgba(0, 229, 255, 0.3);
    --text-primary: #e6edf3;
    --text-secondary: #7d8590;
    --text-muted: #484f58;
    --font-mono: "JetBrains Mono", "Share Tech Mono", monospace;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --glow-green: 0 0 15px rgba(0, 255, 65, 0.3);
}

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

body {
    background-color: var(--color-bg);
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-6);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-green-15);
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.back-link:hover {
    color: var(--color-green);
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

h1 .accent {
    color: var(--color-green);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.status-indicator .dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-green);
    border-radius: 50%;
    box-shadow: var(--glow-green);
}

.app-main {
    flex-grow: 1;
}

.input-section {
    margin-bottom: var(--space-6);
}

.terminal-input-wrapper {
    background: var(--color-surface);
    border: 1px solid var(--color-green-15);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.prompt {
    color: var(--color-green);
    white-space: nowrap;
}

input[type="text"] {
    background: transparent;
    border: none;
    color: var(--color-cyan);
    font-family: var(--font-mono);
    font-size: 1rem;
    width: 100%;
    outline: none;
}

.results-section {
    background: var(--color-surface);
    border: 1px solid var(--color-green-15);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    min-height: 300px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    text-align: center;
    gap: 1rem;
    padding-top: 4rem;
}

.hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.result-group {
    margin-bottom: 2rem;
}

.result-group:last-child {
    margin-bottom: 0;
}

.result-group h2 {
    font-size: 0.9rem;
    color: var(--color-green);
    text-transform: uppercase;
    margin-bottom: 1rem;
    border-bottom: 1px dashed var(--color-green-15);
    padding-bottom: 0.5rem;
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.result-row:last-child {
    border-bottom: none;
}

.label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.value {
    color: var(--text-primary);
    font-size: 0.85rem;
    word-break: break-all;
    text-align: right;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.value:hover {
    background: var(--color-green-15);
    color: var(--color-green);
}

.value:active {
    background: var(--color-green-30);
}

.value.copied {
    background: var(--color-green);
    color: var(--color-bg);
}

.value.binary {
    font-size: 0.75rem;
    color: var(--color-cyan);
}

.app-footer {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-green-15);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 1px;
}

.actions-bar {
    margin-top: var(--space-4);
    display: flex;
    justify-content: flex-end;
}

.action-btn {
    background: var(--color-surface);
    border: 1px solid var(--color-green-15);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.action-btn:hover {
    border-color: var(--color-green);
    color: var(--color-green);
    box-shadow: var(--glow-green);
}

.action-btn.copied {
    background: var(--color-green);
    color: var(--color-bg);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-green);
    color: var(--color-bg);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(0, 255, 65, 0.4);
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

@media (max-width: 600px) {
    .app-container {
        padding: var(--space-4);
    }

    .terminal-input-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .result-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .value {
        text-align: left;
    }
}