/* global.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

:root {
  --bg: #0f1220;
  --panel: #171a2e;
  --accent: #ff4ecd;
  --accent-2: #4df3ff;
  --text: #eaeaf0;
  --muted: #9aa0c4;
}

body.light {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --accent: #ff3ca6;
  --accent-2: #3bd6e6;
  --text: #1b1e2b;
  --muted: #5f678a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(255,78,205,0.15), transparent 60%),
              radial-gradient(900px 500px at 10% 10%, rgba(77,243,255,0.12), transparent 60%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

/* HEADER & NAV */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 48px;
  border-bottom: 1px solid rgba(255,255,255,0.05); /* Optional subtle border */
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 0.5px;
}

.logo span { color: var(--accent); }

nav a {
  margin-left: 24px;
  font-weight: 600;
  color: var(--muted);
}

nav a:hover { color: var(--text); opacity: 1; }

.theme-toggle {
  margin-left: 24px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background 0.2s;
}

.theme-toggle:hover { background: rgba(255,255,255,0.1); }

/* GLOBAL BUTTONS */
.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0e1a;
  box-shadow: 0 10px 30px rgba(255,78,205,0.25);
  transition: transform 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  opacity: 1;
}

/* FOOTER */
footer {
  margin-top: auto; /* Pushes footer to bottom */
  padding: 40px 48px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* RESPONSIVE HEADER */
@media (max-width: 900px) {
  header { padding: 20px 24px; }
}

/* --- MODAL STYLES --- */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(15, 18, 32, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--panel);
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  position: relative;
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.close-btn {
  position: absolute;
  top: 15px; right: 15px;
  background: none; border: none;
  color: var(--muted);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10;
}
.close-btn:hover { color: var(--text); }

/* TABS */
.modal-tabs {
  display: flex;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-btn {
  flex: 1;
  padding: 18px;
  background: none;
  border: none;
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
  border-bottom: 2px solid transparent;
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
  background: rgba(255, 255, 255, 0.03);
}

/* FORMS */
.modal-body {
  padding: 30px;
}

.auth-form {
  display: none; /* Hidden by default */
  flex-direction: column;
  gap: 16px;
}

.auth-form.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  transition: 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.3);
}

/* AVATAR UPLOAD */
.avatar-upload {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 10px;
}

.avatar-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #2b2f55;
  border: 2px dashed var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
  transition: 0.2s;
  position: relative;
}

.avatar-preview:hover {
  border-color: var(--accent);
  background: rgba(255, 78, 205, 0.1);
}

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

.avatar-label {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--accent-2);
  cursor: pointer;
}

/* CHECKBOX */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.checkbox-group input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.submit-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #000;
  font-weight: 700;
  cursor: pointer;
  margin-top: 10px;
  transition: transform 0.2s;
}
.submit-btn:hover { transform: translateY(-2px); }