:root {
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --container-bg: rgba(255, 255, 255, 0.8);
    --text-color: #333;
    --heading-color: #1d2b4f;
    --btn-bg: #4a69bd;
    --btn-hover: #5c7ee0;
    --btn-shadow: rgba(74, 105, 189, 0.4);
    --transition-speed: 0.4s;
    --border-radius: 20px;
    --shadow: 0 15px 35px rgba(0, 0, 0, 0.1);

    /* Number Colors */
    --color-yellow: #fbc400;
    --color-blue: #69c8f2;
    --color-red: #ff7272;
    --color-gray: #aaa;
    --color-green: #b0d840;
    --number-text-color: white;
}

body.dark-mode {
    --bg-gradient: linear-gradient(135deg, #1a1c2c 0%, #2c3e50 100%);
    --container-bg: rgba(45, 45, 45, 0.8);
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --btn-bg: #5c7ee0;
    --btn-hover: #6b8eff;
    --btn-shadow: rgba(92, 126, 224, 0.4);
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
    backdrop-filter: blur(5px);
}

.container {
    position: relative;
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: background-color var(--transition-speed) ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 600px;
    width: 95%;
    margin: 20px auto;
}

header h1 {
    margin-bottom: 10px;
}

.subtitle {
    margin-bottom: 40px;
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.8;
}

/* Animal Face Test Section */
.test-section {
    margin-bottom: 50px;
}

.upload-area {
    border: 2px dashed var(--btn-bg);
    padding: 50px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    background-color: rgba(0, 0, 0, 0.02);
}

body.dark-mode .upload-area {
    background-color: rgba(255, 255, 255, 0.02);
}

.upload-area:hover {
    background-color: rgba(74, 105, 189, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--btn-bg);
    margin-bottom: 15px;
}

.preview-container {
    margin-top: 20px;
    position: relative;
}

#image-preview {
    max-width: 100%;
    max-height: 350px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Results */
.result-container {
    margin-top: 30px;
    animation: fadeIn 0.5s ease;
}

#label-container {
    margin: 20px 0;
}

.result-bar-wrapper {
    margin-bottom: 15px;
    text-align: left;
}

.result-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-weight: 600;
}

.bar-container {
    height: 15px;
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

body.dark-mode .bar-container {
    background-color: rgba(255, 255, 255, 0.1);
}

.bar-fill {
    height: 100%;
    background-color: var(--btn-bg);
    width: 0%;
    transition: width 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.retry-btn {
    margin-top: 20px;
    background: none;
    border: 1px solid var(--btn-bg);
    color: var(--btn-bg);
    padding: 10px 25px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background-color: var(--btn-bg);
    color: white;
}

/* Spinner Animation */
.spinner {
    width: 40px;
    height: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.double-bounce1, .double-bounce2 {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--btn-bg);
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    animation: sk-bounce 2.0s infinite ease-in-out;
}

.double-bounce2 { animation-delay: -1.0s; }

@keyframes sk-bounce {
    0%, 100% { transform: scale(0.0); }
    50% { transform: scale(1.0); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.lotto-section {
    margin-top: 50px;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--heading-color);
    transition: color var(--transition-speed) ease, transform 0.2s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

h1 {
    font-size: clamp(2rem, 5vw, 2.8rem);
    color: var(--heading-color);
    margin-bottom: 35px;
    font-weight: 700;
    letter-spacing: -1px;
    transition: color var(--transition-speed) ease;
}

.numbers-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(55px, 1fr));
    gap: 15px;
    margin-bottom: 40px;
}

.number {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    font-weight: bold;
    color: var(--number-text-color);
    transition: background-color var(--transition-speed) ease, transform 0.2s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.number:hover {
    transform: translateY(-5px);
}

.number[data-category="yellow"] { background-color: var(--color-yellow); }
.number[data-category="blue"]   { background-color: var(--color-blue); }
.number[data-category="red"]    { background-color: var(--color-red); }
.number[data-category="gray"]   { background-color: var(--color-gray); }
.number[data-category="green"]  { background-color: var(--color-green); }

#generate-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 18px 35px;
    font-size: 1.25rem;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, transform 0.1s ease, box-shadow 0.2s ease;
    box-shadow: 0 5px 20px var(--btn-shadow);
    font-weight: 600;
    letter-spacing: 0.5px;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
    box-shadow: 0 8px 25px var(--btn-shadow);
}

#generate-btn:active {
    transform: translateY(2px) scale(0.98);
    box-shadow: 0 2px 10px var(--btn-shadow);
}

.contact-section {
    margin-top: 50px;
    padding-top: 30px;
}

hr {
    border: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
    margin-bottom: 35px;
}

body.dark-mode hr {
    background: rgba(255, 255, 255, 0.1);
}

h3 {
    margin-bottom: 25px;
    color: var(--heading-color);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 20px;
}

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

body.dark-mode input, body.dark-mode textarea {
    background-color: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--btn-bg);
}

textarea {
    height: 120px;
    resize: none;
}

.submit-btn {
    width: 100%;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

.submit-btn:hover {
    background-color: var(--btn-hover);
}

.submit-btn:active {
    transform: scale(0.98);
}

#form-status {
    margin-top: 20px;
    font-size: 1rem;
    font-weight: 500;
}

#form-status.success {
    color: #4CAF50;
}

#form-status.error {
    color: #f44336;
}

.comments-section {
    margin-top: 50px;
    padding-top: 30px;
    text-align: left;
}

.comments-section h3 {
    text-align: center;
}