@import url("https://fonts.googleapis.com/css2?family=Ubuntu:wght@300;400;500;700&display=swap");

:root {
  --bg-color: #1f2029;
  --card-bg: #2b2e38;
  --primary: #4e54c8;
  --primary-hover: #3f44a5;
  --secondary: #8f94fb;
  --text-main: #ffffff;
  --text-muted: #b0b3c6;
  --input-bg: #15161b;
  --success: #00b894;
  --error: #ff7675;
  --shadow: 0 8px 24px rgba(0,0,0,0.2);
  --radius: 12px;
  --transition: all 0.3s ease;
}

/* BASE STYLES */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Ubuntu", sans-serif;
}

body {
  font-weight: 400;
  font-size: 16px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg-color);
  color: var(--text-main);
  background-image: linear-gradient(135deg, #1f2029 0%, #2b2e38 100%);
}

a {
  text-decoration: none;
  color: var(--secondary);
  transition: var(--transition);
}

a:hover {
  color: var(--primary);
}

/* LAYOUT */

div.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 2vh;
  width: 100%;
}

img.logo {
  height: 60px;
  margin-bottom: 30px;
  filter: drop-shadow(0 0 10px rgba(143, 148, 251, 0.3));
  transition: var(--transition);
}

img.logo:hover {
  transform: scale(1.1) rotate(5deg);
}

/* TABS & FORMS */

.tab-container {
  width: 90%;
  max-width: 600px;
  background-color: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tab-header {
  display: flex;
  background-color: rgba(0,0,0,0.2);
}

.tab-btn {
  flex: 1;
  padding: 15px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
}

.tab-btn:hover {
  background-color: rgba(255,255,255,0.05);
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--text-main);
  border-bottom: 3px solid var(--primary);
  background-color: rgba(255,255,255,0.02);
}

.tab-content {
  display: none;
  padding: 30px 25px;
  animation: slideIn 0.3s ease-out;
}

.tab-content.show {
  display: block;
}

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

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 5px;
  display: block;
}

input[type="text"], input[type="url"] {
  width: 100%;
  padding: 12px 15px;
  background-color: var(--input-bg);
  border: 2px solid transparent;
  border-radius: 8px;
  color: var(--text-main);
  font-size: 16px;
  transition: var(--transition);
  text-align: left; /* Reset from center */
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(78, 84, 200, 0.2);
}

button[type="submit"] {
  width: 100%;
  padding: 12px;
  background: linear-gradient(45deg, var(--primary), var(--secondary));
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 10px;
  box-shadow: 0 4px 15px rgba(78, 84, 200, 0.4);
}

button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(78, 84, 200, 0.6);
}

button[type="submit"]:active {
  transform: translateY(0);
}

/* RESULT CARD */

.card {
  width: 90%;
  max-width: 450px;
  background-color: var(--card-bg);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  color: var(--text-muted);
}

.card a {
  color: var(--secondary);
  font-weight: 500;
  word-break: break-all;
}

/* DETAIL PAGE */

.detail-wrapper {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px;
  width: 90%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 25px;
  box-shadow: var(--shadow);
  margin-bottom: 40px;
}

.detail-wrapper .shorturl {
  background-color: var(--input-bg);
  padding: 15px 25px;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 15px;
  border: 1px solid rgba(255,255,255,0.1);
  width: 100%;
  justify-content: space-between;
}

.detail-wrapper .shorturl p {
  margin: 0;
  color: var(--text-main);
  font-size: 18px;
  font-weight: 500;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-wrapper .copy {
  cursor: pointer;
  opacity: 0.8;
  transition: var(--transition);
}

.detail-wrapper .copy:hover {
  opacity: 1;
  transform: scale(1.1);
}

.detail-wrapper .qr-code {
  background: white;
  padding: 15px;
  border-radius: 12px;
}

.detail-wrapper .card {
  box-shadow: none;
  background-color: var(--input-bg);
  padding: 15px;
  width: 100%;
}

.detail-wrapper .chart-container {
  background-color: var(--input-bg);
  border-radius: var(--radius);
  padding: 15px;
  width: 100%;
  border: 1px solid rgba(255,255,255,0.05);
}

.total {
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.total strong {
  color: var(--text-main);
  font-size: 18px;
}

.btn-back {
  display: inline-block;
  padding: 12px 30px;
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-back:hover {
  background-color: var(--primary);
  color: white;
}

/* MINI BUTTONS (History, etc) */

.btn-mini {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none !important;
  border: none;
}

.btn-mini-primary {
  background: var(--secondary);
  color: white;
}

.btn-mini-primary:hover {
  background: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-mini-outline {
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-muted);
}

.btn-mini-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-danger-outline {
  background: transparent;
  border: 1px solid var(--error);
  color: var(--error);
  transition: var(--transition);
  cursor: pointer;
}

.btn-danger-outline:hover {
  background-color: var(--error);
  color: white;
  transform: translateY(-2px);
}

/* TOAST */

#toast {
  visibility: hidden;
  min-width: 250px;
  background-color: var(--success);
  color: white;
  text-align: center;
  border-radius: 50px;
  padding: 16px;
  position: fixed;
  z-index: 100;
  left: 50%;
  transform: translateX(-50%);
  top: 30px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

#toast.show {
  visibility: visible;
  animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

@keyframes fadein {
  from {top: 0; opacity: 0;}
  to {top: 30px; opacity: 1;}
}

@keyframes fadeout {
  from {top: 30px; opacity: 1;}
  to {top: 0; opacity: 0;}
}

/* FOOTER */

footer {
  padding: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: auto;
}

/* COPY BUTTON IN RESULT (Index Page) */
.copy-btn-inline {
    background-color: var(--primary);
    color: white;
    padding: 5px 15px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    margin-left: 10px;
}