/* Fake Tweet Generator - Mobile-first styles */

:root {
    --twitter-blue: #1DA1F2;
    --twitter-black: #14171A;
    --twitter-dark-gray: #657786;
    --twitter-light-gray: #AAB8C2;
    --twitter-extra-light: #E1E8ED;
    --twitter-bg: #FFFFFF;
    --fake-red: #E74C3C;
    --bg-gray: #F5F8FA;
    --transition-speed: 0.2s;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-gray);
    color: var(--twitter-black);
    line-height: 1.4;
    min-height: 100vh;
    min-height: 100dvh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
}

/* Header */
.header {
    text-align: center;
    padding: 20px 0;
}

.header h1 {
    font-size: 1.5rem;
    color: var(--twitter-black);
    margin-bottom: 4px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--twitter-dark-gray);
}

/* Form Section */
.form-section {
    background: var(--twitter-bg);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--twitter-dark-gray);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="datetime-local"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--twitter-extra-light);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--twitter-blue);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Upload Preview */
.upload-label {
    display: block;
    cursor: pointer;
}

.upload-preview {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--twitter-extra-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    overflow: hidden;
    transition: background-color var(--transition-speed);
    border: 2px dashed var(--twitter-light-gray);
}

.upload-preview:hover {
    background: var(--twitter-light-gray);
}

.upload-preview.has-image {
    border: none;
}

.upload-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.upload-icon {
    font-size: 1.5rem;
}

.upload-text {
    font-size: 0.625rem;
    color: var(--twitter-dark-gray);
    margin-top: 2px;
}

/* Input with prefix */
.input-with-prefix {
    display: flex;
    align-items: center;
    border: 1px solid var(--twitter-extra-light);
    border-radius: 8px;
    overflow: hidden;
}

.input-with-prefix .prefix {
    padding: 12px;
    background: var(--bg-gray);
    color: var(--twitter-dark-gray);
    font-weight: 500;
}

.input-with-prefix input {
    border: none !important;
    border-radius: 0 !important;
    flex: 1;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--twitter-black);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--twitter-light-gray);
    border-radius: 4px;
    margin-right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.checkbox-label input:checked + .checkbox-custom {
    background: var(--twitter-blue);
    border-color: var(--twitter-blue);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: var(--twitter-blue);
    color: white;
    border-radius: 50%;
    font-size: 0.625rem;
    margin-right: 4px;
}

/* Character counter */
.char-counter {
    text-align: right;
    font-size: 0.75rem;
    color: var(--twitter-light-gray);
    margin-top: 4px;
}

.char-counter.warning {
    color: #FFAD1F;
}

.char-counter.error {
    color: var(--fake-red);
}

/* Metrics Row */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.metric-input label {
    font-size: 0.75rem;
    display: block;
    margin-bottom: 4px;
}

.metric-input input {
    width: 100%;
    padding: 10px 8px;
    border: 1px solid var(--twitter-extra-light);
    border-radius: 8px;
    font-size: 0.875rem;
    text-align: center;
}

/* Preview Section */
.preview-section {
    margin-bottom: 20px;
}

.preview-section h2 {
    font-size: 1rem;
    color: var(--twitter-dark-gray);
    margin-bottom: 12px;
}

/* Tweet Preview */
.tweet-preview {
    background: var(--twitter-bg);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tweet-header {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
}

.tweet-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--twitter-extra-light);
    margin-right: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tweet-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-initial {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--twitter-dark-gray);
}

.tweet-user-info {
    flex: 1;
}

.tweet-name-row {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tweet-name {
    font-weight: 700;
    color: var(--twitter-black);
    font-size: 0.9375rem;
}

.verified-icon {
    display: inline-flex;
}

.tweet-handle {
    color: var(--twitter-dark-gray);
    font-size: 0.9375rem;
}

.tweet-content {
    font-size: 1.0625rem;
    line-height: 1.5;
    color: var(--twitter-black);
    margin-bottom: 12px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.tweet-time {
    font-size: 0.9375rem;
    color: var(--twitter-dark-gray);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--twitter-extra-light);
    margin-bottom: 12px;
}

.tweet-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--twitter-extra-light);
}

.metric {
    font-size: 0.875rem;
    color: var(--twitter-dark-gray);
}

.metric strong {
    color: var(--twitter-black);
}

/* Watermark */
.tweet-watermark {
    background: var(--fake-red);
    color: white;
    text-align: center;
    padding: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    margin: 12px -16px -16px -16px;
    border-radius: 0 0 16px 16px;
}

/* Download Button */
.download-btn {
    width: 100%;
    padding: 16px 24px;
    background: var(--twitter-blue);
    color: white;
    border: none;
    border-radius: 9999px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    min-height: 52px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.download-btn:hover {
    background: #1A91DA;
}

.download-btn:active {
    background: #1681C4;
}

.download-btn:disabled {
    background: var(--twitter-light-gray);
    cursor: not-allowed;
}

/* Disclaimer */
.disclaimer {
    text-align: center;
    padding: 20px;
    font-size: 0.75rem;
    color: var(--twitter-dark-gray);
    line-height: 1.6;
}

.disclaimer p {
    margin-bottom: 4px;
}

/* Tablet and up */
@media (min-width: 768px) {
    .container {
        padding: 24px;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .form-section {
        padding: 24px;
    }

    .tweet-preview {
        padding: 20px;
    }

    .tweet-watermark {
        margin: 16px -20px -20px -20px;
    }
}