:root {
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --container-bg: rgba(255, 255, 255, 0.9);
    --text-color: #333;
    --heading-color: #4a4a4a;
    --heading-gradient: linear-gradient(to right, #667eea, #764ba2);
    --number-bg: linear-gradient(145deg, #ffffff, #e6e6e6);
    --number-shadow-light: #ffffff;
    --number-shadow-dark: #d1d1d1;
    --btn-bg: linear-gradient(to right, #667eea, #764ba2, #6b8cce);
    --btn-text: white;
    --btn-shadow: rgba(118, 75, 162, 0.4);
}

[data-theme="dark"] {
    --bg-gradient: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    --container-bg: rgba(30, 30, 30, 0.85);
    --text-color: #e0e0e0;
    --heading-color: #f0f0f0;
    --heading-gradient: linear-gradient(to right, #89f7fe, #66a6ff);
    --number-bg: linear-gradient(145deg, #2b2b2b, #1f1f1f);
    --number-shadow-light: #3d3d3d;
    --number-shadow-dark: #121212;
    --btn-bg: linear-gradient(to right, #89f7fe, #66a6ff, #89f7fe);
    --btn-text: #1a1a1a;
    --btn-shadow: rgba(102, 166, 255, 0.4);
}

body {
    background: var(--bg-gradient);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 40px 0;
    color: var(--text-color);
    transition: background 0.5s ease;
}

.container {
    text-align: center;
    background: var(--container-bg);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    width: 450px;
    max-width: 90%;
    position: relative;
    transition: background 0.3s ease;
}

#theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: transform 0.3s ease;
    box-shadow: none;
    width: auto;
    height: auto;
}

#theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
    background: transparent;
    box-shadow: none;
}

h1 {
    margin-bottom: 2rem;
    color: var(--heading-color);
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: var(--heading-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.numbers {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 2.5rem;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--number-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    font-weight: 800;
    color: #444;
    box-shadow: 5px 5px 10px var(--number-shadow-dark), -5px -5px 10px var(--number-shadow-light);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 2px solid transparent;
}

.number:nth-child(1) { border-color: #ff6b6b; color: #ff6b6b; }
.number:nth-child(2) { border-color: #feca57; color: #feca57; }
.number:nth-child(3) { border-color: #48dbfb; color: #0abde3; }
.number:nth-child(4) { border-color: #ff9ff3; color: #f368e0; }
.number:nth-child(5) { border-color: #54a0ff; color: #2e86de; }
.number:nth-child(6) { border-color: #1dd1a1; color: #10ac84; }

.number:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

button#generate {
    padding: 15px 40px;
    border: none;
    border-radius: 50px;
    background-image: var(--btn-bg);
    background-size: 200% auto;
    color: var(--btn-text);
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 5px 15px var(--btn-shadow);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

button#generate:hover {
    background-position: right center;
    transform: translateY(-2px);
    box-shadow: 0 7px 20px var(--btn-shadow);
}

button#generate:active {
    transform: translateY(1px);
}

.contact-section {
    margin-top: 3rem;
    margin-bottom: 3rem;
}

/* ... existing contact styles ... */

.comments-section {
    margin-top: 3rem;
    width: 100%;
}

.comments-section hr {
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #ccc, transparent);
    margin-bottom: 2rem;
}

.comments-section h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--heading-color);
}

/* Ensure Utterances iframe fits within the container */
.utterances {
    max-width: 100%;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.1);
    background: rgba(255, 255, 255, 0.5);
    color: var(--text-color);
    font-size: 14px;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

[data-theme="dark"] .form-group input, 
[data-theme="dark"] .form-group textarea {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255,255,255,0.1);
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.2);
}

.form-group textarea {
    height: 100px;
    resize: none;
}

.submit-btn {
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: var(--heading-gradient);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}