:root {
    /* --- Variables (Default: Vibrant Light) --- */
    --bg-color: #f4f7f6;
    --text-color: #2b2d42;
    --container-bg: #ffffff;
    --border-color: #e0e0e0;
    --header-bg: #f0f4f8;
    --accent-color: #4361ee;
    --code-bg: #f0f4f8;
    --code-text: #2b2d42;
    --success-color: #06d6a0;
    --fail-color: #ef476f;
    --pending-color: #ffd166;
    --error-bg: #ffe5e9;
    --error-border: #ffb3c1;
    --error-text: #c92a2a;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #f0f4f8;
}

/* --- Themes --- */
body.theme-dark-solarized {
    --bg-color: #002b36;
    --text-color: #839496;
    --container-bg: #073642;
    --border-color: #586e75;
    --header-bg: #002b36;
    --accent-color: #268bd2;
    --code-bg: #002b36;
    --code-text: #839496;
    --success-color: #859900;
    --fail-color: #dc322f;
    --pending-color: #b58900;
    --dropzone-bg: #073642;
    --dropzone-hover: #002b36;
}

body.theme-dark-dracula {
    --bg-color: #282a36;
    --text-color: #f8f8f2;
    --container-bg: #44475a;
    --border-color: #6272a4;
    --header-bg: #282a36;
    --accent-color: #bd93f9;
    --code-bg: #282a36;
    --code-text: #f8f8f2;
    --success-color: #50fa7b;
    --fail-color: #ff5555;
    --pending-color: #f1fa8c;
    --dropzone-bg: #44475a;
    --dropzone-hover: #6272a4;
}

body.theme-dark-monokai {
    --bg-color: #272822;
    --text-color: #f8f8f2;
    --container-bg: #3e3d32;
    --border-color: #75715e;
    --header-bg: #272822;
    --accent-color: #a6e22e;
    --code-bg: #272822;
    --code-text: #f8f8f2;
    --success-color: #a6e22e;
    --fail-color: #f92672;
    --pending-color: #fd971f;
    --dropzone-bg: #3e3d32;
    --dropzone-hover: #49483e;
}

body.theme-dark-gruvbox {
    --bg-color: #282828;
    --text-color: #ebdbb2;
    --container-bg: #3c3836;
    --border-color: #504945;
    --header-bg: #282828;
    --accent-color: #fe8019;
    --code-bg: #282828;
    --code-text: #ebdbb2;
    --success-color: #b8bb26;
    --fail-color: #fb4934;
    --pending-color: #fabd2f;
    --dropzone-bg: #3c3836;
    --dropzone-hover: #504945;
}

body.theme-dark-catppuccin {
    --bg-color: #24273a;
    --text-color: #cad3f5;
    --container-bg: #363a4f;
    --border-color: #494d64;
    --header-bg: #24273a;
    --accent-color: #8aadf4;
    --code-bg: #24273a;
    --code-text: #cad3f5;
    --success-color: #a6da95;
    --fail-color: #ed8796;
    --pending-color: #eed49f;
    --dropzone-bg: #363a4f;
    --dropzone-hover: #494d64;
}

body.theme-dark-kiwi {
    --bg-color: #161616;
    --text-color: #e0e0e0;
    --container-bg: #202020;
    --border-color: #333333;
    --header-bg: #161616;
    --accent-color: #98c379;
    --code-bg: #161616;
    --code-text: #e0e0e0;
    --success-color: #98c379;
    --fail-color: #e06c75;
    --pending-color: #e5c07b;
    --dropzone-bg: #202020;
    --dropzone-hover: #333333;
}

body.theme-dark-onedark {
    --bg-color: #282c34;
    --text-color: #abb2bf;
    --container-bg: #21252b;
    --border-color: #3e4451;
    --header-bg: #282c34;
    --accent-color: #61afef;
    --code-bg: #282c34;
    --code-text: #abb2bf;
    --success-color: #98c379;
    --fail-color: #e06c75;
    --pending-color: #e5c07b;
    --dropzone-bg: #21252b;
    --dropzone-hover: #3e4451;
}

body.theme-light-github {
    --bg-color: #ffffff;
    --text-color: #24292f;
    --container-bg: #f6f8fa;
    --border-color: #d0d7de;
    --header-bg: #ffffff;
    --accent-color: #0969da;
    --code-bg: #f6f8fa;
    --code-text: #24292f;
    --success-color: #1a7f37;
    --fail-color: #cf222e;
    --pending-color: #9a6700;
    --dropzone-bg: #f6f8fa;
    --dropzone-hover: #eaeef2;
}

body.theme-light-github-default {
    --bg-color: #ffffff;
    --text-color: #1F2328;
    --container-bg: #f6f8fa;
    --border-color: #d0d7de;
    --header-bg: #ffffff;
    --accent-color: #1f883d;
    --code-bg: #f6f8fa;
    --code-text: #1F2328;
    --success-color: #1a7f37;
    --fail-color: #cf222e;
    --pending-color: #9a6700;
    --dropzone-bg: #f6f8fa;
    --dropzone-hover: #eaeef2;
}

body.theme-light-atom-one {
    --bg-color: #fafafa;
    --text-color: #383a42;
    --container-bg: #ffffff;
    --border-color: #e5e5e6;
    --header-bg: #fafafa;
    --accent-color: #4078f2;
    --code-bg: #fafafa;
    --code-text: #383a42;
    --success-color: #50a14f;
    --fail-color: #e45649;
    --pending-color: #986801;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #f0f0f1;
}

body.theme-light-quiet {
    --bg-color: #f5f5f5;
    --text-color: #333333;
    --container-bg: #ffffff;
    --border-color: #e3e3e3;
    --header-bg: #f5f5f5;
    --accent-color: #7a3e9d;
    --code-bg: #f5f5f5;
    --code-text: #333333;
    --success-color: #448c27;
    --fail-color: #cd3131;
    --pending-color: #7b5d00;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #ededed;
}

body.theme-light-ayu {
    --bg-color: #fafafa;
    --text-color: #5c6166;
    --container-bg: #ffffff;
    --border-color: #f0f0f0;
    --header-bg: #fafafa;
    --accent-color: #ff9940;
    --code-bg: #fafafa;
    --code-text: #5c6166;
    --success-color: #86b300;
    --fail-color: #f07178;
    --pending-color: #ffb454;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #f5f5f5;
}

body.theme-light-bluloco {
    --bg-color: #f9f9f9;
    --text-color: #383a42;
    --container-bg: #ffffff;
    --border-color: #e0e0e0;
    --header-bg: #f9f9f9;
    --accent-color: #2f86d2;
    --code-bg: #f9f9f9;
    --code-text: #383a42;
    --success-color: #23974a;
    --fail-color: #d52753;
    --pending-color: #df631c;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #eeeeee;
}

body.theme-light-catppuccin-latte {
    --bg-color: #eff1f5;
    --text-color: #4c4f69;
    --container-bg: #e6e9ef;
    --border-color: #ccd0da;
    --header-bg: #eff1f5;
    --accent-color: #1e66f5;
    --code-bg: #eff1f5;
    --code-text: #4c4f69;
    --success-color: #40a02b;
    --fail-color: #d20f39;
    --pending-color: #df8e1d;
    --dropzone-bg: #e6e9ef;
    --dropzone-hover: #dce0e8;
}

body.theme-light-horizon {
    --bg-color: #fffaf5;
    --text-color: #403f53;
    --container-bg: #ffffff;
    --border-color: #edc7b7;
    --header-bg: #fffaf5;
    --accent-color: #da103f;
    --code-bg: #fffaf5;
    --code-text: #403f53;
    --success-color: #27d796;
    --fail-color: #f43e5c;
    --pending-color: #fab387;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #fdf6e3;
}

body.theme-light-soft-era {
    --bg-color: #f9f5f5;
    --text-color: #675f6d;
    --container-bg: #ffffff;
    --border-color: #ece3e3;
    --header-bg: #f9f5f5;
    --accent-color: #ba8baf;
    --code-bg: #f9f5f5;
    --code-text: #675f6d;
    --success-color: #87c095;
    --fail-color: #e27e8d;
    --pending-color: #e8a988;
    --dropzone-bg: #ffffff;
    --dropzone-hover: #f4eeee;
}

body.theme-light-gentle-sepia {
    --bg-color: #f8f5e6;
    --text-color: #5f4b32;
    --container-bg: #fdfbf5;
    --border-color: #e0d6b8;
    --header-bg: #f8f5e6;
    --accent-color: #a36b2d;
    --code-bg: #f8f5e6;
    --code-text: #5f4b32;
    --success-color: #6b8c42;
    --fail-color: #c25b56;
    --pending-color: #d9a441;
    --dropzone-bg: #fdfbf5;
    --dropzone-hover: #f2ebd4;
}

/* --- Base & Layout --- */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px;
    max-width: 900px;
    margin: 0 auto;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
    scroll-behavior: smooth;
}

.section {
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    background: var(--container-bg);
    transition: all 0.3s ease;
}

/* --- Typography --- */
h2 {
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    font-size: 1.5em;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: -0.02em;
    position: relative;
    user-select: none;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 3px;
}

h3 {
    margin: 0 0 15px 0;
    font-size: 1.2em;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    user-select: none;
}

h3::before {
    content: '';
    display: block;
    width: 4px;
    height: 1.2em;
    background-color: var(--accent-color);
    margin-right: 12px;
    border-radius: 2px;
}

h4 {
    margin: 25px 0 15px 0;
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-color);
    opacity: 0.8;
    font-weight: 700;
    display: flex;
    align-items: center;
    user-select: none;
}

h4::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--border-color);
    margin-left: 12px;
    opacity: 0.5;
}

pre {
    white-space: pre-wrap;
    word-break: break-all;
    margin: 0;
    font-family: monospace;
    color: var(--code-text);
    background: var(--code-bg);
    padding: 4px;
    border-radius: 3px;
}

/* --- Utilities --- */
.hidden { display: none !important; }

.error {
    color: var(--error-text);
    margin: 10px 0;
    padding: 10px;
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-radius: 12px;
}

/* --- Components: Summary --- */
.summary-layout {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
}

.summary-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.summary-label {
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-color);
    opacity: 0.6;
    font-weight: 700;
    user-select: none;
}

.subject-text {
    font-size: 1.2em;
    font-weight: 600;
    line-height: 1.3;
    word-break: break-word;
    color: var(--text-color);
}

.summary-pill {
    font-size: 1em;
    padding: 6px 14px;
}

/* --- Components: Drop Zone --- */
#drop-zone {
    border: 2px dashed var(--border-color);
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    border-radius: 12px;
    background: var(--dropzone-bg);
    transition: all 0.3s ease;
    cursor: pointer;
    color: var(--text-color);
    user-select: none;
}

#drop-zone.hover {
    background: var(--dropzone-hover);
    border-color: var(--accent-color);
}

.paste-container {
    margin-top: 20px;
    cursor: default;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 15px 0;
    color: var(--text-color);
    opacity: 0.5;
    font-size: 0.8em;
    font-weight: 700;
    text-transform: uppercase;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 10px;
}

.paste-area {
    width: 100%;
    height: 120px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--code-text);
    font-family: monospace;
    font-size: 0.85em;
    resize: vertical;
    transition: all 0.2s ease;
    text-align: left;
    user-select: text;
}

.paste-area:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-color) 15%, transparent);
}

/* --- Components: Theme Selector --- */
.theme-buttons { display: flex; gap: 8px; align-items: center; }
.theme-separator { width: 1px; height: 20px; background-color: var(--border-color); margin: 0 5px; }
.theme-btn { width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--border-color); cursor: pointer; transition: transform 0.2s; opacity: 0.9; user-select: none; }
.theme-btn:hover { transform: scale(1.2); opacity: 1; }
.theme-btn.active { transform: scale(1.2); opacity: 1; box-shadow: 0 0 0 2px var(--bg-color), 0 0 0 4px var(--text-color); }

.theme-btn[data-theme="theme-light-nord"] { background: linear-gradient(135deg, #f4f7f6 50%, #4361ee 50%); }

.theme-btn[data-theme="theme-dark-solarized"] { background: linear-gradient(135deg, #002b36 50%, #268bd2 50%); }
.theme-btn[data-theme="theme-dark-dracula"] { background: linear-gradient(135deg, #282a36 50%, #bd93f9 50%); }
.theme-btn[data-theme="theme-dark-monokai"] { background: linear-gradient(135deg, #272822 50%, #a6e22e 50%); }
.theme-btn[data-theme="theme-dark-gruvbox"] { background: linear-gradient(135deg, #282828 50%, #fe8019 50%); }
.theme-btn[data-theme="theme-dark-catppuccin"] { background: linear-gradient(135deg, #24273a 50%, #8aadf4 50%); }
.theme-btn[data-theme="theme-dark-kiwi"] { background: linear-gradient(135deg, #161616 50%, #98c379 50%); }
.theme-btn[data-theme="theme-dark-onedark"] { background: linear-gradient(135deg, #282c34 50%, #61afef 50%); }
.theme-btn[data-theme="theme-light-github"] { background: linear-gradient(135deg, #ffffff 50%, #0969da 50%); }
.theme-btn[data-theme="theme-light-github-default"] { background: linear-gradient(135deg, #ffffff 50%, #1f883d 50%); }
.theme-btn[data-theme="theme-light-atom-one"] { background: linear-gradient(135deg, #fafafa 50%, #4078f2 50%); }
.theme-btn[data-theme="theme-light-quiet"] { background: linear-gradient(135deg, #f5f5f5 50%, #7a3e9d 50%); }
.theme-btn[data-theme="theme-light-ayu"] { background: linear-gradient(135deg, #fafafa 50%, #ff9940 50%); }
.theme-btn[data-theme="theme-light-bluloco"] { background: linear-gradient(135deg, #f9f9f9 50%, #2f86d2 50%); }
.theme-btn[data-theme="theme-light-catppuccin-latte"] { background: linear-gradient(135deg, #eff1f5 50%, #1e66f5 50%); }
.theme-btn[data-theme="theme-light-horizon"] { background: linear-gradient(135deg, #fffaf5 50%, #da103f 50%); }
.theme-btn[data-theme="theme-light-soft-era"] { background: linear-gradient(135deg, #f9f5f5 50%, #ba8baf 50%); }
.theme-btn[data-theme="theme-light-gentle-sepia"] { background: linear-gradient(135deg, #f8f5e6 50%, #a36b2d 50%); }

/* --- Components: Cards (Headers & Tags) --- */
.data-card.signed-header {
    background-color: color-mix(in srgb, var(--success-color) 5%, var(--container-bg));
    border-color: color-mix(in srgb, var(--success-color) 30%, var(--border-color));
}

.data-card.signed-header .data-key::before {
    content: '🔐 ';
    font-size: 0.9em;
    margin-right: 5px;
}

/* Status Badges (Shared) */
.status-pass, .status-fail, .status-pending {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
    display: inline-block;
    border: 1px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-pass {
    background-color: color-mix(in srgb, var(--success-color) 10%, transparent);
    color: var(--success-color);
    border-color: color-mix(in srgb, var(--success-color) 20%, transparent);
}

.status-fail {
    background-color: color-mix(in srgb, var(--fail-color) 10%, transparent);
    color: var(--fail-color);
    border-color: color-mix(in srgb, var(--fail-color) 20%, transparent);
}

.status-pending {
    background-color: color-mix(in srgb, var(--pending-color) 10%, transparent);
    color: var(--pending-color);
    border-color: color-mix(in srgb, var(--pending-color) 20%, transparent);
}

/* Grids */
.headers-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

/* Generic Card Styles */
.data-card {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 5px 10px;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    flex: 0 1 auto;
    min-width: 0;
    max-width: 100ch;
}

.data-card:hover {
    box-shadow: 0 8px 16px rgba(0,0,0,0.1), 0 0 8px color-mix(in srgb, var(--accent-color) 20%, transparent);
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

/* Card Keys */
.data-key {
    flex-shrink: 0;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9em;
}

/* Card Values */
.data-value {
    font-family: monospace;
    font-size: 0.85em;
    color: var(--code-text);
    background: transparent;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    flex-grow: 1;
    min-width: 0;
    display: block;
}

/* --- Components: DKIM Results --- */
.dkim-signature-card,
.spf-record-card,
.dmarc-record-card {
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 12px;
    background: var(--container-bg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    transition: all 0.3s ease;
}

.dkim-result-box {
    margin-bottom: 15px;
    padding: 10px;
    background: var(--header-bg);
    border-radius: 12px;
}

.dkim-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.dkim-error-details {
    color: var(--fail-color);
    margin-top: 5px;
    font-size: 0.9em;
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.data-card, .dkim-signature-card, .spf-record-card, .dmarc-record-card {
    animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* --- Components: Buttons --- */
.copy-btn {
    background: transparent;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    opacity: 0;
    color: var(--accent-color);
    flex-shrink: 0;
    font-size: 1.2em;
}

.data-card:hover .copy-btn,
.copy-btn:focus {
    opacity: 0.7;
}

.copy-btn:hover,
.copy-btn:focus {
    opacity: 1 !important;
    background-color: rgba(127, 127, 127, 0.1);
    transform: none;
}

.copy-btn.copied {
    color: var(--success-color);
    opacity: 1 !important;
    box-shadow: none;
    border-color: transparent;
}

.header-controls {
    float: right;
    display: flex;
    gap: 8px;
    align-items: center;
}

.toggle-section-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5em;
    width: 30px;
    height: 30px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: transform 0.3s ease, background-color 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
}

.toggle-details-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 24px;
    height: 24px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
    color: var(--text-color);
    transform: rotate(-90deg); /* Default: Point Right (Collapsed) assuming icon is Down */
}

#toggle-signed-only {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2em;
    padding: 2px 6px;
    border-radius: 8px;
    transition: all 0.2s ease;
    user-select: none;
}

#toggle-signed-only:hover {
    background-color: var(--header-bg);
    box-shadow: 0 0 10px var(--accent-color);
    transform: scale(1.1);
}

.toggle-section-btn:hover {
    background-color: var(--header-bg);
    box-shadow: 0 0 10px var(--accent-color);
    transform: scale(1.1);
}

.toggle-section-btn.rotated {
    transform: rotate(90deg);
}

.toggle-section-btn.rotated:hover {
    transform: rotate(90deg) scale(1.1);
}

.toggle-details-btn.expanded {
    transform: rotate(0deg); /* Point Down (Expanded) */
}

@media (max-width: 600px) {
    .dkim-grid {
        grid-template-columns: 1fr;
    }

    .summary-layout {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .status-group {
        align-items: flex-start;
    }
}

/* --- Components: Details Cards (Hash, DNS) --- */
.hash-details-card,
.signature-details-card,
.dns-command-card {
    margin-top: 15px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

.hash-row {
    display: flex;
    margin-bottom: 6px;
    align-items: baseline;
}

.hash-row:last-child {
    margin-bottom: 0;
}

.hash-label {
    font-weight: 600;
    width: 130px;
    flex-shrink: 0;
    color: var(--text-color);
    opacity: 0.8;
}

.hash-value {
    font-family: monospace;
    color: var(--code-text);
    word-break: break-all;
}

.dns-command-label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
    opacity: 0.8;
}

.spf-trace-node {
    margin-top: 10px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-left: calc(var(--depth, 0) * 20px);
}

.spf-trace-node.match {
    border-left: 4px solid var(--success-color);
    background: color-mix(in srgb, var(--success-color) 5%, var(--container-bg));
}

.spf-trace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.spf-trace-status {
    font-size: 0.8em;
}

.spf-trace-record {
    font-family: monospace;
    font-size: 0.9em;
    word-break: break-all;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.spf-trace-reason {
    font-size: 0.85em;
    color: var(--text-primary);
    font-style: italic;
}

.spf-trace-dns {
    margin-top: 5px;
    font-size: 0.8em;
    opacity: 0.7;
    display: flex;
    align-items: center;
}

.spf-dns-cmd {
    font-family: monospace;
    margin-right: 8px;
    padding: 2px 4px;
    border-radius: 4px;
}

.spf-dns-cmd:hover {
    background-color: rgba(127, 127, 127, 0.1);
}

.spf-trace-header-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.spf-trace-header-container h4 {
    margin: 0;
}

.spf-trace-container {
    margin-top: 10px;
}

.spf-trace-toggle-btn {
    padding: 4px 12px;
    cursor: pointer;
    border-radius: 15px;
    border: 1px solid currentColor;
    background: rgba(127, 127, 127, 0.1);
    font-size: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.spf-trace-toggle-btn:hover {
    box-shadow: 0 0 10px currentColor;
    background: rgba(127, 127, 127, 0.2);
}

.copy-trace-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: inherit;
    opacity: 0.6;
    font-size: 1.1em;
}

.copy-trace-btn.success {
    color: var(--success-color);
    opacity: 1;
}

.spf-match-chain {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 15px;
}

.chain-node {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 20px;
    background: rgba(127, 127, 127, 0.1);
    font-size: 0.9em;
}

.chain-mech {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.chain-result {
    font-size: 0.8em;
    font-weight: bold;
    color: var(--text-primary);
}

.chain-result.pass {
    color: var(--success-color);
}

.chain-arrow {
    color: var(--text-secondary);
}

.mt-10 { margin-top: 10px; }
.mt-12 { margin-top: 12px; }
.mt-15 { margin-top: 15px; }
.mt-20 { margin-top: 20px; }

.inline-val { display: inline; }
.org-domain-hint { font-size: 0.8em; opacity: 0.7; }

.dkim-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

.card-header {
    font-weight: 700;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- Enhanced Hover Effects --- */
.section:hover,
#drop-zone:hover,
.dkim-signature-card:hover,
.spf-record-card:hover,
.dmarc-record-card:hover,
.hash-details-card:hover,
.signature-details-card:hover,
.dns-command-card:hover {
    box-shadow: 0 12px 30px rgba(0,0,0,0.15), 0 0 15px color-mix(in srgb, var(--accent-color) 30%, transparent);
    transform: translateY(-3px);
    border-color: var(--accent-color);
    z-index: 2;
}

/* --- Components: DKIM Rework --- */
.dkim-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 15px;
}

.dkim-header-info {
    display: flex;
    flex-direction: column;
}

.dkim-domain {
    font-size: 1.2em;
    font-weight: 700;
    color: var(--text-color);
}

.dkim-selector {
    font-family: monospace;
    font-size: 0.9em;
    color: var(--text-color);
    opacity: 0.7;
}

.dkim-status-badge {
    font-size: 0.9em;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    color: #fff;
}

.dkim-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 15px;
}

.dkim-check-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.dkim-check-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.9em;
    color: var(--text-color);
    opacity: 0.9;
    margin-bottom: 5px;
}

.dkim-check-value {
    font-family: monospace;
    font-size: 0.85em;
    word-break: break-all;
    color: var(--code-text);
    line-height: 1.4;
}

.dkim-check-label {
    font-size: 0.75em;
    text-transform: uppercase;
    color: var(--text-color);
    opacity: 0.6;
    font-weight: 700;
}

.dkim-advanced-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    cursor: pointer;
    user-select: none;
    font-size: 0.95em;
    font-weight: 600;
    color: var(--text-color);
    background: var(--header-bg);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.dkim-advanced-toggle:hover {
    border-color: var(--accent-color);
    background: var(--container-bg);
}

.mb-15 { margin-bottom: 15px; }

/* --- Components: DKIM Technical Details --- */
.tech-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 15px;
    padding: 15px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.tech-detail-card {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    font-size: 0.9em;
    display: flex;
    flex-direction: column;
}

.tech-detail-card.full-width {
    grid-column: 1 / -1;
}

.tech-label {
    font-size: 0.7em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 5px;
    display: block;
}

.tech-value.code, pre.tech-value.code {
    font-family: monospace;
    word-break: break-all;
    white-space: pre-wrap;
    font-size: 0.95em;
    color: var(--code-text);
    background: var(--code-bg);
    padding: 8px;
    border-radius: 4px;
}

.scrollable-pre {
    max-height: 250px;
    overflow-y: auto;
    font-size: 0.85em;
}

/* --- Components: Relay Timeline --- */
.relay-timeline {
    position: relative;
    padding: 10px 0;
}

.relay-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

.relay-hop {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    position: relative;
}

.relay-content {
    width: 45%;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px;
    position: relative;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.relay-content:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-color: var(--accent-color);
    z-index: 2;
}

.relay-spacer {
    width: 45%;
}

.relay-dot {
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border: 4px solid var(--bg-color);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    box-shadow: 0 0 0 1px var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    font-size: 0.75em;
    font-weight: 700;
}

/* --- Components: Server Validation --- */
.auth-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.auth-result-card {
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.auth-method {
    font-weight: 700;
    color: var(--text-color);
    font-size: 0.9em;
}

.auth-props {
    font-size: 0.75em;
    color: var(--text-color);
    opacity: 0.8;
    word-break: break-word;
    margin-top: 4px;
}

.auth-service-id {
    font-size: 0.95em;
    color: var(--text-color);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* Left side */
.relay-hop.left .relay-content { order: 1; }
.relay-hop.left .relay-dot { order: 2; }
.relay-hop.left .relay-spacer { order: 3; }

/* Right side */
.relay-hop.right .relay-spacer { order: 1; }
.relay-hop.right .relay-dot { order: 2; }
.relay-hop.right .relay-content { order: 3; }

.relay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.relay-time {
    font-size: 0.85em;
    font-weight: 600;
    color: var(--text-color);
}

.relay-details {
    font-size: 0.85em;
    color: var(--text-color);
}

.relay-details div {
    margin-bottom: 2px;
    word-break: break-word;
}

.relay-delay {
    font-size: 0.8em;
    padding: 2px 8px;
    border-radius: 8px;
}

.header-stats {
    font-size: 0.75em;
    font-weight: 500;
    margin-left: 10px;
    opacity: 0.8;
    background: var(--bg-color);
    padding: 2px 8px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    vertical-align: middle;
    color: var(--text-color);
}

.dmarc-auth-domain {
    font-size: 0.8em;
    opacity: 0.8;
    margin-top: 2px;
}

.dkim-alignment-warning {
    background: rgba(255, 165, 0, 0.1);
    border-color: orange;
    color: inherit;
}