/* frontend/css/styles.css */
/* Premium dark‑mode + glassmorphism design */

:root {
  --font-family: 'Inter', sans-serif;
  --color-bg: hsl(220, 10%, 10%);
  --color-surface: hsla(220, 10%, 15%, 0.8);
  --color-primary: hsl(210, 80%, 55%);
  --color-primary-hover: hsl(210, 80%, 45%);
  --color-success: hsl(140, 60%, 45%);
  --color-error: hsl(0, 70%, 50%);
  --color-text: hsl(0, 0%, 90%);
  --radius: 0.75rem;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  text-align: center;
  padding: 2rem 1rem;
  background: linear-gradient(135deg, hsla(210, 70%, 55%, 0.6), hsla(210, 70%, 35%, 0.6));
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.container {
  flex: 1;
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section {
  margin-bottom: 2rem;
}

h2 {
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.controls input,
.controls select {
  padding: 0.5rem 0.75rem;
  border: 1px solid hsla(0, 0%, 100%, 0.1);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

.btn-primary {
  background: var(--color-primary);
  border: none;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}

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

.btn-secondary {
  background: hsla(0, 0%, 100%, 0.1);
  border: none;
  color: var(--color-text);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: hsla(0, 0%, 100%, 0.2);
}

.table {
  width: 100%;
  border-collapse: collapse;
  backdrop-filter: blur(6px);
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid hsla(0, 0%, 100%, 0.05);
}

.table th {
  background: hsla(0, 0%, 100%, 0.05);
  color: var(--color-primary);
}

.hidden { display: none; }

label {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

label input,
label textarea {
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.25rem;
  border: 1px solid hsla(0,0%,100%,0.1);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

.preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.preview img {
  max-width: 120px;
  max-height: 120px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}