@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap');

:root {
  --bg-color: #0d1117;
  --text-color: #f0f6fc;
  --card-bg: #161b22;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --secondary: #ec4899;
  --accent: #8b5cf6;
  --border: rgba(255,255,255,0.1);
  --success: #10b981;
  --error: #ef4444;
  --glass-bg: rgba(22, 27, 34, 0.6);
  --glass-border: rgba(255,255,255,0.1);
  --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --glow: 0 0 20px rgba(139, 92, 246, 0.5);
}

[data-theme='light'] {
  --bg-color: #f7f9fc;
  --text-color: #1a202c;
  --card-bg: #ffffff;
  --border: rgba(0,0,0,0.1);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --glow: 0 0 15px rgba(79, 70, 229, 0.3);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  border-radius: 16px;
}

.text-gradient {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: var(--bg-color);
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  text-decoration: none;
  color: var(--text-color);
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  transition: color 0.2s;
}

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

.btn {
  padding: 0.6rem 1.5rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff !important;
  box-shadow: var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(139, 92, 246, 0.7);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary) !important;
  margin-left: 1rem;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff !important;
}

/* Theme Toggle */
#theme-toggle {
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: 1.5rem;
  transition: color 0.3s;
}

#theme-toggle:hover {
  color: var(--primary);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 0;
  flex: 1;
}

.hero {
  text-align: center;
  padding: 6rem 1rem;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.8;
  margin-bottom: 2rem;
}

.hero .buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.card {
  padding: 2rem;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: transform 0.3s, border-color 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79,70,229,0.2);
}

.auth-card {
  max-width: 400px;
  margin: 4rem auto;
}

.auth-card h2 {
  margin-bottom: 1.5rem;
  text-align: center;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--card-bg);
  font-weight: 600;
}

.badge {
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge.pending { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.badge.processing { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.badge.completed { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.badge.canceled { background: rgba(239, 68, 68, 0.2); color: #ef4444; }

#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: slideIn 0.3s ease forwards, fadeOut 0.3s ease 2.7s forwards;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--error); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

.spinner {
  border: 3px solid rgba(255,255,255,0.3);
  border-top: 3px solid #fff;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}

@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.balance-card {
  padding: 1rem 2rem;
  border-left: 4px solid var(--primary);
}

.balance-card span {
  font-size: 0.9rem;
  opacity: 0.8;
}

.balance-card h3 {
  font-size: 2rem;
  margin-top: 0.5rem;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-color);
    background: transparent;
    border: none;
    cursor: pointer;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2);
        display: none;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a, .nav-links button, .nav-links .btn {
        margin: 0.5rem auto;
        width: 90%;
        text-align: center;
        justify-content: center;
        display: flex;
    }

    #theme-toggle {
        margin-left: auto;
        margin-right: auto;
        width: 100%;
        text-align: center;
        padding: 0.5rem;
    }
}

/* Dashboard Responsiveness */
.dashboard-wrapper-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
    margin-top: 2rem;
}
@media (min-width: 900px) {
    .dashboard-wrapper-grid {
        grid-template-columns: 1fr 2fr;
    }
}

@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero .buttons {
        flex-direction: column;
        width: 100%;
    }
    .hero .buttons .btn {
        margin-left: 0 !important;
        width: 100%;
    }
}

/* Modal Styles */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}
.modal-overlay.active {
    display: flex;
}
.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    position: relative;
    animation: slideUp 0.3s ease;
}
@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    background: none;
    border: none;
    opacity: 0.7;
    transition: opacity 0.2s, color 0.2s;
}
.close-modal:hover { opacity: 1; color: var(--error); }