/* --- DESIGN SYSTEM: DYNAMIC THEME --- */
:root {
    /* Light Mode (Default) */
    --bg: #ffffff;
    --text-primary: #37352f;
    --text-secondary: #787774;
    --border: #e3e2e0;
    --hover-bg: #f7f6f3;
    --surface: #ffffff;
    --block-bg: #f7f6f3;
    --sidebar-bg: #fbfbfa; /* Sidebar Light */
    --btn-bg: #2ea44f; /* Prominent Green */
    --btn-text: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --logo-icon-bg: #37352f;
    --logo-icon-text: #ffffff;

    /* Tags / Status Colors */
    --tag-green-bg: #dbeddb;
    --tag-green-text: #28452c;
    --tag-red-bg: #ffe2dd;
    --tag-red-text: #5d1715;
    --tag-orange-bg: #fdecc8;
    --tag-orange-text: #5f370e;
    --tag-gray-bg: #e3e2e0;
    --tag-gray-text: #37352f;

    /* Accents */
    --accent-red: #d32f2f; /* Error State */

    /* Typography */
    --font-heading: "Georgia", "Times New Roman", serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --bg: #191919;
    --text-primary: #e0e0e0;
    --text-secondary: #9b9b9b;
    --border: #2f2f2f;
    --hover-bg: #2c2c2c;
    --surface: #202020;
    --block-bg: #252525;
    --sidebar-bg: #202020; /* Sidebar Dark */
    --btn-bg: #2ea44f; /* Consistent Green */
    --btn-text: #ffffff;
    --nav-bg: rgba(25, 25, 25, 0.9);
    --logo-icon-bg: #e0e0e0;
    --logo-icon-text: #191919;

    --tag-green-bg: rgba(39, 174, 96, 0.2);
    --tag-green-text: #6fcf97;
    --tag-red-bg: rgba(235, 87, 87, 0.2);
    --tag-red-text: #ff8787;
    --tag-orange-bg: rgba(241, 196, 15, 0.2);
    --tag-orange-text: #f1c40f;
    --tag-gray-bg: rgba(255, 255, 255, 0.1);
    --tag-gray-text: #ccc;

    --accent-red: #ff6b6b;
}

/* FORCE DARK MODE BODY BACKGROUND */
[data-theme="dark"] body {
    background-color: var(--bg);
    color: var(--text-primary);
}

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

body {
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.2s, color 0.2s;
}

a {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

ul {
    list-style: none;
}

/* --- LAYOUT UTILS --- */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.spacer {
    height: 70px;
}

.spacer-sm {
    height: 40px;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
}

.text-sub {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.mono {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #eb5757; /* Consistent accent for mono in both modes */
    background: rgba(235, 87, 87, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

[data-theme="dark"] .mono {
    color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
}

/* --- HEADER --- */
header {
    position: sticky;
    top: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    transition: border-color 0.2s;
}

.nav-content {
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.logo-icon {
    width: 24px;
    height: 24px;
    background: var(--logo-icon-bg);
    border-radius: 4px;
    color: var(--logo-icon-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
}

.sovereign-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--block-bg);
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid var(--border);
    font-family: var(--font-body);
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-color: var(--text-secondary);
}

.nav-links a.btn {
    color: var(--btn-text);
    text-decoration: none;
}

.nav-links a.btn:hover {
    color: var(--btn-text);
    opacity: 0.9;
}

/* --- NAV DROPDOWN (NEW) --- */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    transition: background 0.2s;
}

.nav-dropdown-btn:hover {
    background: var(--hover-bg);
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 8px;
    background-color: var(--surface);
    min-width: 180px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border: 1px solid var(--border);
    border-radius: 8px;
    z-index: 1000;
    padding: 6px 0;
}

[data-theme="dark"] .nav-dropdown-content {
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

/* Open dropdown on click/focus */
.nav-dropdown:focus-within .nav-dropdown-content {
    display: block;
}

.nav-dropdown-item {
    display: block;
    width: 100%;
    padding: 8px 16px;
    text-align: left;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    font-family: var(--font-body);
}

.nav-dropdown-item:hover {
    background-color: var(--hover-bg);
    text-decoration: none;
    color: var(--text-primary);
}

/* --- TOGGLE SWITCH --- */
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.icon-sun {
    display: none;
}

.icon-moon {
    display: block;
}

[data-theme="dark"] .icon-sun {
    display: block;
}

[data-theme="dark"] .icon-moon {
    display: none;
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    background: var(--btn-bg);
    color: var(--btn-text);
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    transition: opacity 0.2s;
    border: 1px solid var(--btn-bg);
    gap: 8px; /* Gap for spinner */
}

.btn:hover {
    opacity: 0.9;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s;
}

.btn-outline:hover {
    background: var(--hover-bg);
    border-color: var(--text-secondary);
}

/* --- SPINNER ANIMATION (NEW) --- */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s ease-in-out infinite;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- CALLOUT BLOCKS --- */
.callout {
    background: var(--block-bg);
    padding: 24px;
    border-radius: 8px;
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    border: 1px solid transparent;
}

[data-theme="dark"] .callout {
    border: 1px solid var(--border);
}

.callout-icon {
    font-size: 1.5rem;
}

/* --- DATABASE VIEW --- */
.database-view {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg);
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    overflow-x: auto;
}

.db-header {
    background: var(--block-bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    min-width: 600px;
}

.db-row {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    align-items: center;
    font-size: 0.95rem;
    min-width: 600px;
}

.db-row:last-child {
    border-bottom: none;
}

.db-row:hover {
    background: var(--hover-bg);
}

.tag {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.tag-green {
    background: var(--tag-green-bg);
    color: var(--tag-green-text);
}

.tag-orange {
    background: var(--tag-orange-bg);
    color: var(--tag-orange-text);
}

.tag-red {
    background: var(--tag-red-bg);
    color: var(--tag-red-text);
}

.tag-gray {
    background: var(--tag-gray-bg);
    color: var(--tag-gray-text);
}

/* --- FEATURE GRID --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-item {
    text-align: left;
}

.feature-item h3 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1.1rem;
    margin-top: 10px;
    color: var(--text-primary);
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.icon-box {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 10px;
    background: var(--block-bg);
    border-radius: 8px;
}

#faq .feature-grid {
    grid-template-columns: repeat(2, 1fr);
}

/* --- FOOTER --- */
footer {
    border-top: 1px solid var(--border);
    padding: 60px 0;
    margin-top: 80px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-flex {
    display: flex;
    justify-content: space-between;
}

@media (max-width: 900px) {
    h1 {
        font-size: 2.5rem;
    }

    .sovereign-badge {
        display: none;
    }
}

/* --- FORM ELEMENTS (New) --- */
form {
    max-width: 480px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select,
.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

select {
    /*appearance: none;*/
    /*background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23787774' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");*/
    background-repeat: no-repeat;
    background-position: right 16px center !important;
    padding-right: 40px;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--btn-bg);
    box-shadow: 0 0 0 3px rgba(46, 164, 79, 0.15);
}

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px var(--surface) inset !important;
    -webkit-text-fill-color: var(--text-primary) !important;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
}

.btn-submit:hover {
    background-color: #0056b3;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check-label {
    margin-bottom: 0;
    cursor: pointer;
}