/* ============================================
  PART 1: THEME & COLOR VARIABLES (HS Style)
  ============================================
*/
:root {
  --bg-color: #f4f7f6;
  --card-bg: rgba(255, 255, 255, 0.65);
  --primary-text: #1a1a1a;
  --secondary-text: #555;
  --accent-color-1: #007bff;
  --accent-color-2: #6f42c1;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --border-color: rgba(255, 255, 255, 0.8);
  --toggle-bg: #ccc;
  --toggle-knob: #fff;
  --input-bg: rgba(255, 255, 255, 0.5);
  --success-color: #22c55e;
  --error-color: #dc3545;
}

body.dark-mode {
  --bg-color: #0d1117;
  --card-bg: rgba(22, 27, 34, 0.7);
  --primary-text: #f0f6fc;
  --secondary-text: #8b949e;
  --accent-color-1: #00eaff;
  --accent-color-2: #ff00ff;
  --shadow-color: rgba(0, 0, 0, 0.4);
  --border-color: rgba(255, 255, 255, 0.1);
  --toggle-bg: #333;
  --toggle-knob: #fff; 
  --input-bg: rgba(0, 0, 0, 0.2);
  --success-color: #28a745;
  --error-color: #f87171;
}

/* ============================================
  PART 2: GENERAL PAGE STYLING
  ============================================
*/
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg-color);
  color: var(--primary-text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 8rem 1rem 2rem;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}
body::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(-45deg, var(--accent-color-1), var(--accent-color-2), var(--accent-color-1), var(--accent-color-2));
  background-size: 400% 400%;
  animation: gradient-flow 15s ease infinite;
  z-index: -1; opacity: 0.15;
}
@keyframes gradient-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.container {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ============================================
  PART 3: THEME TOGGLE
  ============================================
*/
.theme-switcher { flex-shrink: 0; }
.theme-switcher input { display: none; }
.theme-switcher label {
  cursor: pointer; display: block; width: 50px; height: 28px;
  background-color: var(--toggle-bg); border-radius: 100px;
  position: relative; transition: background-color 0.3s ease;
}
.theme-switcher label::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 22px; height: 22px; background-color: var(--toggle-knob);
  border-radius: 50%; transition: 0.3s ease;
}
.theme-switcher input:checked + label { background-color: var(--accent-color-1); }
.theme-switcher input:checked + label::after {
  transform: translateX(22px);
  background-color: #ffffff;
}

/* ============================================
  PART 4: HEADER
  ============================================
*/
.dashboard-header {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  width: 100%;
  max-width: 600px;
  display: flex;
  justify-content: space-between; 
  align-items: center;
  position: fixed;
  top: 1.5rem; 
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
}
@media (max-width: 640px) {
    .dashboard-header {
        width: calc(100% - 2rem);
        top: 1rem;
    }
}

.dashboard-header .title {
  flex-grow: 1; margin: 0 1rem; text-align: center;
  font-size: 1.2rem; font-weight: 600; letter-spacing: 1px;
  line-height: 1.1;
  background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.profile-icon {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
  color: #fff; display: flex; justify-content: center;
  align-items: center; font-weight: 600; font-size: 1.1rem;
  cursor: pointer; box-shadow: 0 2px 10px var(--shadow-color);
  transition: transform 0.2s ease; flex-shrink: 0;
}
.profile-icon:hover { transform: scale(1.05); }

/* ============================================
  PART 5: CONTENT STYLES
  ============================================
*/
.content-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.content-title {
  font-size: 1.25rem; font-weight: 600;
  color: var(--primary-text); text-align: center;
  background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0rem;
}

.styled-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 12px 20px;
  background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
  color: #fff; text-decoration: none; font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px -5px var(--accent-color-2);
  border: none; cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem; width: 100%;
}
.styled-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -5px var(--accent-color-2);
}

.styled-input {
  width: 100%; padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--primary-text);
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  transition: border-color 0.3s, box-shadow 0.3s;
  text-align: center;
  letter-spacing: 1px;
}
.styled-input:focus {
  outline: none;
  border-color: var(--accent-color-1);
  box-shadow: 0 0 10px var(--accent-color-1);
}

.hidden { display: none !important; }

.styled-button.btn-back {
  background: var(--input-bg);
  color: var(--primary-text);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 5px var(--shadow-color);
}
.styled-button.btn-back:hover {
  background: var(--card-bg);
  border-color: var(--accent-color-1);
  box-shadow: 0 4px 10px var(--shadow-color);
  transform: none;
}

.message-box {
    padding: 1rem;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    border: 1px solid;
}
.message-box.error {
    background: rgba(220, 53, 69, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

/* Tool Specific Styles (Adapted) */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.format-info {
    text-align: center;
    font-size: 0.85rem;
    color: var(--secondary-text);
    margin-top: -0.5rem;
}

/* Results Styling */
#results {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    margin-top: 1rem;
    animation: fadeIn 0.5s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#results h3 {
    font-size: 1.1rem;
    color: var(--accent-color-1);
    margin-bottom: 0.5rem;
    margin-top: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}
#results h3:first-child { margin-top: 0; }

#results p {
    color: var(--primary-text);
    margin: 0.5rem 0;
    font-weight: 500;
}

#results ul {
    list-style: none;
    padding-left: 0;
}
#results li {
    margin-bottom: 5px;
    color: var(--secondary-text);
    font-size: 0.95rem;
}

/* ============================================
  PART 6: FOOTER
  ============================================
*/
.site-footer {
  text-align: center;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 4px 15px var(--shadow-color);
}
.footer-credit {
  font-size: 0.9rem;
  color: var(--secondary-text);
}

/* ============================================
  PART 7: DEVELOPER MODAL
  ============================================
*/
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center; align-items: center;
  z-index: 1000; opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-content {
  background: var(--card-bg); backdrop-filter: blur(15px);
  border: 1px solid var(--border-color); border-radius: 12px;
  padding: 1.5rem; box-shadow: 0 10px 30px var(--shadow-color);
  max-width: 90%; width: 300px; position: relative;
  text-align: center; transform: scale(0.8);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal-content { transform: scale(1); }
.modal-close {
  position: absolute; top: 10px; right: 15px; font-size: 2rem;
  color: var(--secondary-text); cursor: pointer; background: none;
  border: none; line-height: 1; padding: 0;
  transition: color 0.3s ease;
}
.modal-close:hover { color: var(--primary-text); }
.modal-content h3 {
  background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem; font-size: 1.5rem; font-weight: 600;
}
.modal-content .info-row { margin-bottom: 1.5rem; }
.modal-content .info-row strong {
  display: block; font-size: 0.85rem; color: var(--secondary-text);
  margin-bottom: 0.4rem; text-transform: uppercase; letter-spacing: 0.5px;
}
.modal-content .info-row p {
    color: var(--primary-text); font-weight: 500;
    margin: 0; font-size: 1rem;
}
.modal-button {
  display: block; width: 100%; padding: 12px 0;
  margin-top: 1rem; background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
  color: #fff; text-decoration: none; font-weight: 600;
  border-radius: 8px; transition: opacity 0.3s ease, transform 0.2s ease;
}
.modal-button:hover { opacity: 0.9; transform: translateY(-1px); }