:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.15) 0%, transparent 20%);
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    text-align: center;
}

header {
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

.logo {
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-transform: uppercase;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
}

.analyzer-box {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

textarea {
    width: 100%;
    height: 150px;
    background: rgba(15, 23, 42, 0.6);
    border: 2px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    transition: all 0.3s ease;
    outline: none;
}

textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

button {
    margin-top: 1.5rem;
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(139, 92, 246, 0.4);
}

button:active {
    transform: translateY(0);
}

/* Result Section */
.result-hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all 0.5s ease;
    margin-top: 2rem;
}

.result-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.result-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: inline-block;
    min-width: 200px;
}

.result-card .label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.result-card h2 {
    font-size: 2rem;
    margin-top: 0.5rem;
}

.positive {
    color: var(--success);
}
.positive h2 {
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.negative {
    color: var(--danger);
}
.negative h2 {
    text-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

#sentimentIcon {
    font-size: 3rem;
    margin-top: 0.5rem;
}

footer {
    margin-top: 3rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Loader */
.loader {
    width: 20px;
    height: 20px;
    border: 2px solid #fff;
    border-bottom-color: transparent;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    display: none;
}

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

.loading .btn-text {
    display: none;
}
.loading .loader {
    display: inline-block;
}