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

:root {
    --primary-gradient: linear-gradient(135deg, #10b981 0%, #047857 100%);
    /* Emerald green to differentiate */
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-blur: 20px;
    --accent: #10b981;
}

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

html {
    overflow-x: hidden;
    width: 100%;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 40px 20px;
    position: relative;
    overflow-x: hidden;
    width: 100%;
}

/* Background Blobs */
.bg-blobs {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 600px;
    height: 600px;
    background: var(--primary-gradient);
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.12;
}

.blob-1 {
    top: -10%;
    right: -10%;
}

.blob-2 {
    bottom: -10%;
    left: -10%;
    animation-delay: -5s;
}

/* Calculator Card */
.calculator-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 30px 40px;
    width: 100%;
    max-width: 900px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header {
    text-align: center;
    margin-bottom: 10px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

header p {
    color: #94a3b8;
    font-size: 1rem;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Text Area */
textarea {
    width: 100%;
    min-height: 250px;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    color: var(--text-color);
    font-size: 1.2rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
}

textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

textarea::placeholder {
    color: #475569;
}

textarea::-webkit-scrollbar {
    width: 8px;
}

textarea::-webkit-scrollbar-track {
    background: transparent;
}

textarea::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Action Buttons Grid */
.action-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 5px;
}

.action-btn {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    padding: 15px 20px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.action-btn:hover {
    background: rgba(0, 0, 0, 0.6);
    color: var(--accent);
    border-color: rgba(16, 185, 129, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.action-btn:active {
    transform: translateY(0);
}

/* Utility Buttons */
.utility-grid {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 10px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.utility-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: #cbd5e1;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.utility-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.danger-btn {
    color: #ef4444;
}

.danger-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
    .calculator-card {
        padding: 25px 15px;
    }

    .action-grid {
        grid-template-columns: 1fr;
    }

    .utility-grid {
        flex-direction: column;
    }

    .utility-btn {
        justify-content: center;
    }
}