/* ===== BASE - Variables, Reset, Typography ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

* {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== CORE THEMES & VARIABLES ===== */
:root {
    --theme-color: #10b981;
    --theme-color-dark: #059669;
    --theme-color-light: #34d399;
    --theme-color-shadow: rgba(16, 185, 129, 0.25);
    --theme-color-rgb: 16, 185, 129;

    /* Z-index system for consistent layering */
    --z-content: 10;
    --z-dropdown: 30;
    --z-sidebar: 100;
    --z-modal-backdrop: 900;
    --z-modal: 1000;
    --z-tooltip: 1200;
}

body {
    background: #101010;
    color: #fff;
    overflow-x: hidden;
    overflow-y: auto;
    transition: background-color 0.2s ease, color 0.2s ease;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

/* Emerald scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(16, 185, 129, 0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(16, 185, 129, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(16, 185, 129, 0.5);
}

/* Scale down for 1080p and smaller screens */
@media (max-width: 1920px) {
    body {
        zoom: 0.75;
    }
}

/* Scale up for 4K screens (native, no OS scaling) */
@media (min-width: 3000px) {
    body {
        zoom: 1.25;
    }
}

/* Scale up for 5K screens (native, no OS scaling) */
@media (min-width: 4500px) {
    body {
        zoom: 1.5;
    }
}

html {
    overflow-x: hidden;
    overflow-y: auto;
    min-height: 100vh;
    background: #101010;
}

body {
    --bg-primary: #101010;
    --bg-secondary: #101010;
    --bg-tertiary: #101010;
    --text-primary: #fff;
    --text-secondary: #fff;
    --text-tertiary: #fff;
    --border-color: rgba(255, 255, 255, 0.1);
    --hover-bg: rgba(255, 255, 255, 0.05);
}

.hidden { display: none !important; }

/* ===== GENERAL MODAL STYLES ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.hidden {
    display: none !important;
}

.modal-content {
    background: var(--bg-primary, #101010);
    border: 1px solid var(--border-color, #101010);
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.3s ease;
}

.modal-content.show {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color, #101010);
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary, #fff);
}

.close-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-secondary, #101010);
    border: 1px solid var(--border-color, #101010);
    color: var(--text-primary, #fff);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.close-btn:hover {
    background: var(--theme-color);
    color: white;
    border-color: var(--theme-color);
}

.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color, #101010);
}

.modal-tab {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary, #fff);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-tab:hover {
    color: var(--text-primary, #fff);
}

.modal-tab.active {
    color: var(--theme-color);
    border-bottom: 2px solid var(--theme-color);
}

.modal-body {
    padding: 24px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== FORM STYLES ===== */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #fff);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.required-indicator {
    color: #fff;
    font-weight: 700;
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px;
    background: var(--bg-secondary, #101010);
    border: 1px solid var(--border-color, #101010);
    border-radius: 6px;
    color: var(--text-primary, #fff);
    font-size: 14px;
    transition: all 0.2s;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--theme-color);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

/* Ice blue text selection */
::selection {
    background: rgba(16, 185, 129, 0.4);
    color: #fff;
}

/* ===== AUTH MODAL STYLES ===== */
.auth-modal-content {
    max-width: 420px;
}

.auth-form {
    padding: 24px;
    display: block;
}

.auth-form.hidden {
    display: none !important;
}

#forgot-password-form {
    min-height: 200px;
}

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px 0;
}

.auth-subtitle {
    font-size: 14px;
    color: #fff;
    margin: 0;
}

.auth-fields {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 16px;
}

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-label {
    font-size: 13px;
    color: #fff;
    font-weight: 500;
}

.auth-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 15px;
    color: #fff;
    transition: all 0.2s;
    box-sizing: border-box;
}

.auth-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

.auth-input::placeholder {
    color: #fff;
}

.auth-input.valid {
    border-color: rgba(16, 185, 129, 0.6);
    background: rgba(16, 185, 129, 0.08);
}

.auth-input.valid:focus {
    border-color: rgba(16, 185, 129, 0.8);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.auth-input.invalid {
    border-color: rgba(255, 71, 87, 0.6);
    background: rgba(255, 71, 87, 0.08);
}

.auth-input.invalid:focus {
    border-color: rgba(255, 71, 87, 0.8);
    box-shadow: 0 0 10px rgba(255, 71, 87, 0.3);
}

.auth-password-wrapper {
    position: relative;
}

.auth-password-wrapper .auth-input {
    padding-right: 48px;
}

.auth-password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.auth-password-toggle:hover {
    color: #fff;
}

.auth-password-toggle svg {
    width: 20px;
    height: 20px;
}

.auth-error {
    font-size: 12px;
    color: #fff;
    display: none;
}

.auth-error.show {
    display: block;
}

.auth-error-message {
    font-size: 13px;
    color: #fff;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: 6px;
    padding: 10px 12px;
    margin: 10px 0;
    display: none;
    text-align: center;
}

.auth-error-message.show {
    display: block;
}

.auth-success-message {
    font-size: 13px;
    color: #fff;
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid rgba(46, 213, 115, 0.3);
    border-radius: 6px;
    padding: 10px 12px;
    margin: 10px 0;
    display: none;
    text-align: center;
}

.auth-success-message.show {
    display: block;
}

.auth-hint {
    font-size: 12px;
    color: #fff;
}

/* Signup modal - larger size */
.auth-modal-content.signup-active {
    max-width: 520px;
    max-height: 95vh;
}

/* Terms section */
.auth-terms-section {
    margin-bottom: 16px;
}

.auth-terms-box {
    height: 200px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 16px;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.6;
    color: #fff;
}

.auth-terms-box::-webkit-scrollbar {
    width: 8px;
}

.auth-terms-box::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.auth-terms-box::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.auth-terms-box::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.auth-terms-box h3 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px 0;
}

.auth-terms-box h4 {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    margin: 16px 0 6px 0;
}

.auth-terms-box p {
    margin: 0 0 10px 0;
}

.auth-terms-box ul {
    margin: 0 0 10px 0;
    padding-left: 20px;
}

.auth-terms-box li {
    margin-bottom: 4px;
}

.auth-terms-box .terms-date {
    font-size: 11px;
    color: #fff;
    margin-bottom: 12px;
}

.auth-terms-box .terms-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
    margin: 24px 0;
}

.terms-scroll-hint {
    font-size: 11px;
    color: rgba(16, 185, 129, 0.8);
    text-align: center;
    margin: 8px 0 0 0;
    transition: opacity 0.3s;
}

.terms-scroll-hint.hidden {
    opacity: 0;
}

/* Terms agree checkbox */
.auth-terms-agree {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: #fff;
    cursor: pointer;
    margin-bottom: 16px;
}

.auth-terms-agree input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #fff;
    cursor: pointer;
    margin-top: 2px;
    flex-shrink: 0;
}

.auth-terms-agree input[type="checkbox"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.auth-terms-agree span {
    line-height: 1.4;
}

/* Disabled submit button */
.auth-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.auth-submit-btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

.auth-submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.8), rgba(16, 185, 129, 0.6));
    border: 1px solid rgba(16, 185, 129, 0.5);
    border-radius: 8px;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.auth-submit-btn:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 1), rgba(16, 185, 129, 0.8));
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.auth-submit-btn:active {
    transform: translateY(0);
}

.auth-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.auth-remember {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #fff;
    cursor: pointer;
}

.auth-remember input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #fff;
    cursor: pointer;
}

.auth-forgot {
    font-size: 13px;
    color: #fff;
    text-decoration: none;
    transition: color 0.2s;
}

.auth-forgot:hover {
    color: #fff;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0;
    color: #fff;
    font-size: 13px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.auth-switch {
    text-align: center;
    color: #fff;
    font-size: 14px;
}

.auth-switch a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.auth-switch a:hover {
    color: #fff;
}

.auth-back {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    padding: 0;
    margin-bottom: 16px;
    transition: color 0.2s;
}

.auth-back:hover {
    color: #fff;
}

.auth-back svg {
    width: 16px;
    height: 16px;
}

.auth-message {
    text-align: center;
    color: #fff;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 24px;
}

/* Modal close button */
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.modal-content {
    position: relative;
}

/* ===== EXTERNAL LINK WARNING MODAL ===== */
.external-link-modal-content {
    max-width: 420px;
}

.external-link-warning {
    padding: 32px 24px;
    text-align: center;
}

.external-link-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: rgba(255, 193, 7, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.external-link-icon svg {
    width: 32px;
    height: 32px;
    color: #fff;
}

.external-link-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px 0;
}

.external-link-message {
    font-size: 14px;
    color: #fff;
    line-height: 1.6;
    margin: 0 0 20px 0;
}

.external-link-url {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 13px;
    color: rgba(16, 185, 129, 0.9);
    word-break: break-all;
    margin-bottom: 24px;
    max-height: 80px;
    overflow-y: auto;
}

.external-link-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.external-link-cancel,
.external-link-continue {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.external-link-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.external-link-cancel:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.external-link-continue {
    background: rgba(16, 185, 129, 0.3);
    color: #fff;
    border: 1px solid rgba(16, 185, 129, 0.5);
}

.external-link-continue:hover {
    background: rgba(16, 185, 129, 0.5);
}

/* ===== LINK PREVIEW CARDS ===== */
.link-preview-card {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 10px 14px;
    margin: 4px 0;
    text-decoration: none;
    transition: all 0.2s ease;
    max-width: 100%;
    overflow: hidden;
}

.link-preview-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(16, 185, 129, 0.3);
}

.link-preview-favicon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}

.link-preview-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.link-preview-domain {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
}

.link-preview-url {
    font-size: 11px;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.link-preview-arrow {
    flex-shrink: 0;
    color: #fff;
    transition: color 0.2s ease;
}

.link-preview-card:hover .link-preview-arrow {
    color: rgba(16, 185, 129, 0.8);
}

/* ===== FILE UPLOAD STYLES ===== */
.file-upload-area {
    border: 2px dashed var(--border-color, #101010);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.file-upload-area:hover {
    border-color: var(--theme-color);
    background: rgba(16, 185, 129, 0.1);
}

.file-upload-area.has-file {
    border-color: var(--theme-color);
    background: rgba(16, 185, 129, 0.15);
}

.file-upload-area p {
    color: var(--text-secondary, #fff);
    font-size: 14px;
}

.upload-submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--theme-color);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
}

.upload-submit-btn:hover {
    background: var(--theme-color-dark);
}

/* ===== AUTOCOMPLETE STYLES ===== */
.autocomplete-wrapper {
    position: relative;
    width: 100%;
}

.autocomplete-input {
    width: 100%;
}

.autocomplete-input.has-value {
    border-color: var(--theme-color);
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary, #101010);
    border: 1px solid var(--border-color, #101010);
    border-top: none;
    border-radius: 0 0 6px 6px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1001;
    display: none;
}

.autocomplete-dropdown.show {
    display: block;
}

.autocomplete-item {
    padding: 10px 12px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary, #fff);
    transition: background 0.2s;
}

.autocomplete-item:hover,
.autocomplete-item.highlighted {
    background: var(--theme-color);
    color: white;
}

.autocomplete-item.selected {
    background: rgba(16, 185, 129, 0.3);
}

.autocomplete-no-results {
    padding: 10px 12px;
    font-size: 13px;
    color: var(--text-tertiary, #fff);
    font-style: italic;
}

/* ===== DOWNLOAD MODAL ===== */
.download-modal-content {
    max-width: 400px;
}

.download-info {
    text-align: center;
    padding: 20px 0;
}

.download-info-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.download-info-text {
    font-size: 14px;
    color: var(--text-secondary, #fff);
    margin-bottom: 8px;
}

.download-info-count {
    font-size: 24px;
    font-weight: 700;
    color: var(--theme-color);
    margin-bottom: 20px;
}

.download-modal-actions {
    display: flex;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color, #101010);
}

.download-modal-btn {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.download-modal-btn.cancel {
    background: var(--bg-secondary, #101010);
    border: 1px solid var(--border-color, #101010);
    color: var(--text-primary, #fff);
}

.download-modal-btn.cancel:hover {
    background: var(--bg-tertiary, #101010);
}

.download-modal-btn.confirm {
    background: var(--theme-color);
    border: none;
    color: white;
}

.download-modal-btn.confirm:hover {
    background: var(--theme-color-dark);
}

/* ===== AUTH REQUIRED MODAL ===== */
.auth-required-content {
    max-width: 380px;
    padding: 32px 24px;
    text-align: center;
}

.auth-required-message {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 24px;
}

.auth-required-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.auth-required-btn {
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-required-create {
    background: #10b981;
    color: #fff;
}

.auth-required-create:hover {
    background: #10b981;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.auth-required-dismiss {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.auth-required-dismiss:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.auth-required-emoji {
    width: 20px;
    height: 20px;
    vertical-align: middle;
}