:root { --primary-color: #6a5acd; --secondary-color: #ff69b4; --background-color: #f0f2f5; --container-bg: #ffffff; --text-color: #333; --border-color: #e0e0e0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; background-color: var(--background-color); color: var(--text-color); margin: 0; padding: 20px; display: flex; flex-direction: column; align-items: center; }
.header { width: 100%; max-width: 800px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; padding: 0 10px; }
.logo { font-size: 1.5rem; font-weight: bold; color: var(--primary-color); }
.container { width: 100%; max-width: 800px; background-color: var(--container-bg); padding: 40px; border-radius: 12px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1); min-height: 400px; }
.view-content h1, .view-content h2 { text-align: center; margin-bottom: 1rem; }
.view-content p { text-align: center; font-size: 1.1rem; color: #666; margin-bottom: 2rem; }
.form-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
input[type="text"] { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 1rem; box-sizing: border-box; }
.tone-buttons { display: flex; gap: 10px; }
.tone-btn { flex-grow: 1; padding: 12px 15px; border: 1px solid var(--border-color); background-color: #f9f9f9; border-radius: 8px; cursor: pointer; font-weight: 500; transition: all 0.2s ease; }
.tone-btn:hover { border-color: var(--primary-color); }
.tone-btn.selected { background-color: var(--primary-color); color: white; border-color: var(--primary-color); }
.action-button { width: 100%; padding: 15px; border: none; border-radius: 8px; color: white; font-size: 1.1rem; font-weight: bold; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; background-color: var(--secondary-color); }
.action-button:hover { transform: translateY(-2px); box-shadow: 0 4px 15px rgba(255, 105, 180, 0.4); }
.action-button:disabled { background-color: #ccc; cursor: not-allowed; transform: none; box-shadow: none; }
.upgrade-section { margin-top: 2.5rem; text-align: center; background-color: #f9f9f9; padding: 20px; border-radius: 8px; }
.pricing-tiers { display: flex; flex-direction: column; gap: 10px; margin-top: 1rem; }
.pricing-btn { width: 100%; padding: 12px; border: 1px solid var(--primary-color); color: var(--primary-color); background-color: white; border-radius: 8px; font-weight: bold; cursor: pointer; transition: all 0.2s ease; }
.pricing-btn:hover { background-color: var(--primary-color); color: white; }
.hidden { display: none !important; }
#loading-spinner { width: 40px; height: 40px; border: 4px solid var(--border-color); border-top-color: var(--primary-color); border-radius: 50%; margin: 20px auto; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#error-message { background-color: #fff0f0; color: #d8000c; border: 1px solid #ffbaba; padding: 15px; border-radius: 8px; margin-top: 20px; text-align: center; }
#results-container { margin-top: 2rem; border-top: 1px solid var(--border-color); padding-top: 1rem; }
.caption { background-color: #f9f9f9; padding: 15px; border-radius: 8px; margin-bottom: 10px; white-space: pre-wrap; }
#hashtags-output { font-weight: 500; color: var(--primary-color); background-color: #f0f2f5; padding: 15px; border-radius: 8px; }
.account-status-box { background-color: #e6f7ff; border: 1px solid #91d5ff; padding: 15px; border-radius: 8px; margin-bottom: 2rem; text-align: center; }
.account-status-box p { margin: 5px 0; font-size: 1rem; color: #333; }