* {
    box-sizing: border-box;
}

:root {
    --bg-top: #120d1d;
    --bg-mid: #171126;
    --bg-bottom: #100b18;

    --text-light: #f7f5ff;
    --text-soft: #d7d0f3;
    --text-dark: #1d1730;
    --text-muted: #5e5878;

    --card-bg: rgba(250, 250, 255, 0.96);
    --card-border: rgba(124, 97, 255, 0.10);

    --primary: #6b4df8;
    --primary-2: #8267ff;
    --primary-soft: rgba(107, 77, 248, 0.10);

    --input-border: rgba(107, 77, 248, 0.36);
    --input-border-focus: rgba(107, 77, 248, 0.75);

    --shadow-lg: 0 20px 60px rgba(5, 5, 15, 0.28);
    --shadow-md: 0 12px 30px rgba(80, 56, 200, 0.18);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    color: #111;
    font-family: 'Inter', Arial, sans-serif;
    background:
        radial-gradient(circle at top, rgba(121, 92, 255, 0.18), transparent 30%),
        radial-gradient(circle at 20% 20%, rgba(103, 77, 248, 0.08), transparent 25%),
        linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 50%, var(--bg-bottom) 100%);
}

.page {
    max-width: 980px;
    margin: 0 auto;
    padding: 56px 20px 84px;
}

.hero {
    text-align: center;
    margin-bottom: 34px;
    color: var(--text-light);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    padding: 8px 14px;
    border: 1px solid rgba(142, 120, 255, 0.20);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    color: #d8d2fb;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    backdrop-filter: blur(8px);
}

.hero h1 {
    margin: 0 0 14px;
    font-family: 'Sora', sans-serif;
    font-size: 4.1rem;
    line-height: 1.02;
    font-weight: 800;
    letter-spacing: -0.05em;
    color: #faf8ff;
    text-wrap: balance;
}

.hero p {
    max-width: 760px;
    margin: 0 auto;
    color: var(--text-soft);
    font-size: 1.08rem;
    line-height: 1.75;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 28px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

.label {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.09em;
}

textarea {
    width: 100%;
    min-height: 220px;
    resize: vertical;
    border: 1.5px solid var(--input-border);
    border-radius: 20px;
    padding: 18px 20px;
    outline: none;
    background: rgba(255, 255, 255, 0.98);
    color: var(--text-dark);
    font: inherit;
    font-size: 1rem;
    line-height: 1.7;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

textarea::placeholder {
    color: #9a95b3;
}

textarea:focus {
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 5px var(--primary-soft);
}

.tone-section {
    margin-top: 26px;
}

.tone-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tone-btn {
    border: 1px solid rgba(109, 77, 255, 0.18);
    background: rgba(255, 255, 255, 0.9);
    color: #3a2f57;
    border-radius: 999px;
    padding: 10px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;

    /* FIX */
    white-space: nowrap;
    max-width: 100%;
}

.tone-btn:hover {
    transform: translateY(-1px);
    background: #ffffff;
    border-color: rgba(107, 77, 248, 0.42);
}

.tone-btn.active {
    color: #ffffff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
    box-shadow: var(--shadow-md);
}

.primary-btn {
    width: 100%;
    margin-top: 26px;
    border: none;
    border-radius: 18px;
    padding: 17px 18px;
    color: #ffffff;
    background: linear-gradient(135deg, #5d43ea 0%, #765bff 52%, #8c75ff 100%);
    font: inherit;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 16px 34px rgba(103, 77, 248, 0.28);
    transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 20px 40px rgba(103, 77, 248, 0.32);
}

.primary-btn:active {
    transform: scale(0.995);
}

.output-section {
    margin-top: 30px;
}

.output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.output-box {
    margin-top: 12px;
    min-height: 155px;
    padding: 18px 20px;
    border-radius: 20px;
    border: 1px solid rgba(107, 77, 248, 0.12);
    background: rgba(255, 255, 255, 0.98);
    color: var(--text-dark);
    white-space: pre-wrap;
    line-height: 1.75;
}

.copy-btn {
    border: 1px solid rgba(107, 77, 248, 0.16);
    background: rgba(255, 255, 255, 0.92);
    color: #31284a;
    border-radius: 12px;
    padding: 10px 14px;
    font: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: #ffffff;
    border-color: rgba(107, 77, 248, 0.36);
}

.status-message {
    min-height: 22px;
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

.status-message.success {
    color: #067647;
}

.status-message.error {
    color: #b42318;
}

@media (max-width: 768px) {
    .page {
        padding: 38px 16px 64px;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .card {
        padding: 22px;
        border-radius: 22px;
    }

    textarea {
        min-height: 190px;
    }
}

@media (max-width: 560px) {
    .hero h1 {
        font-size: 2.35rem;
    }

    .tone-buttons {
        gap: 10px;
    }

    .tone-btn {
        width: 100%;
        justify-content: center;
    }

    .output-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .copy-btn {
        width: 100%;
    }

    
}

/* LOADER */
.loader {
    margin: 20px auto 0;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(109, 77, 255, 0.18);
    border-top: 4px solid #6d4dff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: block;
}

.hidden {
    display: none;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.chart-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 20px;
    margin-top: 24px;
}

.chart-card h3 {
    margin: 0 0 16px 0;
    font-size: 18px;
}

.small-chart {
    height: 300px;
}

.large-chart {
    height: 420px;
}

.large-chart-card {
    margin-top: 24px;
}

.chart-wrapper {
    position: relative;
    width: 100%;
}

.dashboard-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 16px;
}

.stat-card strong {
    display: block;
    margin-bottom: 10px;
    font-size: 16px;
}

.stat-card p {
    margin: 6px 0;
    opacity: 0.9;
}

.char-counter {
    display: block;
    text-align: right;
    font-size: 0.75rem;
    color: #888;
    margin-top: 4px;
    transition: color 0.2s;
}