/* ==========================
   Inventory Manager - Shared Styles
   Updated from your working styles.css
========================== */

:root {
    --green: #2e7d32;
    --green-dark: #1b5e20;
    --green-soft: #eef7ee;
    --page: #f4f7f9;
    --text: #263238;
    --muted: #607d8b;
    --line: #dce5e8;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(25, 66, 42, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--page);
    color: var(--text);
    line-height: 1.6;
}

/* ==========================
   Navigation
========================== */

nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 50px;
    border-bottom: 1px solid var(--line);
    background-color: rgba(255, 255, 255, 0.96);
    box-shadow: 0 2px 12px rgba(25, 66, 42, 0.04);
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-container img {
    display: block;
    width: auto;
    height: 78px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
}

.nav-links a {
    color: var(--text);
    font-weight: bold;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.nav-button {
    padding: 10px 18px;
    border-radius: 7px;
    background-color: var(--green);
    color: var(--white) !important;
    box-shadow: 0 5px 12px rgba(46, 125, 50, 0.2);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.nav-button:hover {
    background-color: var(--green-dark);
    transform: translateY(-1px);
}

/* ==========================
   Hero Section
========================== */

header {
    padding: 86px 20px;
    background: linear-gradient(145deg, #ffffff 0%, #f2faf3 100%);
    text-align: center;
}

header h1 {
    margin-bottom: 18px;
    color: var(--green);
    font-size: clamp(2rem, 5vw, 3rem);
    letter-spacing: -0.03em;
    line-height: 1.15;
}

header p {
    max-width: 700px;
    margin: 0 auto 30px;
    color: #455a64;
    font-size: 1.1rem;
}

/* ==========================
   Buttons
========================== */

button {
    padding: 13px 24px;
    margin: 8px;
    border: none;
    border-radius: 7px;
    background-color: var(--green);
    color: var(--white);
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    background-color: var(--green-dark);
    box-shadow: 0 6px 13px rgba(46, 125, 50, 0.2);
    transform: translateY(-1px);
}

button:focus-visible,
.nav-links a:focus-visible {
    outline: 3px solid rgba(46, 125, 50, 0.32);
    outline-offset: 3px;
}

/* ==========================
   Main Content
========================== */

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 48px 20px;
}

/* ==========================
   Sections
========================== */

section {
    margin-bottom: 30px;
    padding: 35px;
    border: 1px solid #e6ecee;
    border-radius: 10px;
    background-color: var(--white);
    box-shadow: var(--shadow);
}

section h2 {
    margin-bottom: 12px;
    color: var(--green);
}

section p {
    margin-bottom: 18px;
}

/* ==========================
   Features
========================== */

article {
    margin-top: 18px;
    padding: 21px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background-color: #fbfdfb;
}

article h3 {
    margin-bottom: 8px;
    color: var(--green);
}

/* ==========================
   Dashboard Preview
========================== */

.dashboard-cards {
    display: flex;
    gap: 20px;
    margin: 30px 0;
}

.dashboard-card {
    flex: 1;
    padding: 22px;
    border: 1px solid #d9e8d9;
    border-left: 5px solid var(--green);
    border-radius: 9px;
    background-color: #f8fbf8;
}

.dashboard-card h3 {
    margin-bottom: 9px;
    color: var(--green);
    font-size: 0.95rem;
}

.dashboard-card p {
    margin: 0;
    color: var(--text);
    font-size: 2rem;
    font-weight: bold;
}

/* ==========================
   Product Table
========================== */

table {
    width: 100%;
    min-width: 600px;
    margin-top: 25px;
    border-collapse: collapse;
}

th,
td {
    padding: 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
}

th {
    background-color: var(--green);
    color: var(--white);
    font-size: 0.9rem;
}

tr:nth-child(even) {
    background-color: #f9fbfa;
}

tr:hover {
    background-color: var(--green-soft);
}

/* Allows horizontal scrolling on small screens */
#dashboard-preview {
    overflow-x: auto;
}

/* ==========================
   How It Works
========================== */

ol {
    padding-left: 20px;
}

ol li {
    margin-bottom: 15px;
}

/* ==========================
   Footer
========================== */

footer {
    margin-top: 30px;
    padding: 22px 20px;
    background-color: var(--green);
    color: var(--white);
    text-align: center;
}

/* ==========================
   Tablet (992px and below)
========================== */

@media (max-width: 992px) {
    nav { padding: 12px 25px; }
    .logo-container img { height: 68px; }
    .nav-links { gap: 18px; }
    .dashboard-cards { flex-wrap: wrap; }
    .dashboard-card { min-width: 250px; }
}

/* ==========================
   Mobile (768px and below)
========================== */

@media (max-width: 768px) {
    nav { flex-wrap: wrap; padding: 16px 20px; }
    .logo-container { justify-content: center; }
    .logo-container img { height: 68px; }
    .menu-toggle { display: block; }
    .nav-links { display: none; flex-direction: column; width: 100%; gap: 10px; margin-top: 18px; text-align: center; }
    .nav-links.active { display: flex; }
    .nav-links a, .nav-button { display: block; width: 100%; padding: 10px; }
    header { padding: 62px 20px; }
    header p { font-size: 1rem; }
    header a { display: block; max-width: 280px; margin: 10px auto; }
    button { width: 100%; margin: 0; }
    main { padding: 32px 16px; }
    section { padding: 25px; }
    .dashboard-cards { flex-direction: column; }
    .dashboard-card { width: 100%; }
    table { font-size: 0.9rem; }
}

/* ==========================
   Small Phones (480px and below)
========================== */

@media (max-width: 480px) {
    nav { padding: 14px; }
    .logo-container img { height: 60px; }
    header { padding: 48px 15px; }
    header p { font-size: 0.95rem; }
    main { padding: 24px 10px; }
    section { padding: 20px; }
    .dashboard-card p { font-size: 1.7rem; }
    table { font-size: 0.85rem; }
    th, td { padding: 10px; }
    footer { padding: 16px; font-size: 0.9rem; }
}

/* ==========================
   Hamburger Menu
========================== */

.menu-toggle {
    display: none;
    width: auto;
    padding: 0;
    margin: 0;
    border: none;
    background: none;
    color: var(--green);
    box-shadow: none;
    font-size: 2rem;
}

.menu-toggle:hover {
    background: none;
    box-shadow: none;
    transform: none;
}