/* ==========================================================================
   INSTAGRAM WEB DARK THEME DESIGN SYSTEM (MATHEUS INÁCIO PORTFOLIO)
   ========================================================================== */
:root {
    /* Instagram Web Enhanced Dark Mode Colors */
    --ig-bg: #050507;
    --ig-surface: #0a0a0e;
    --ig-card-bg: #0e0e12;
    --ig-border: #22222c;
    --ig-hover-bg: rgba(255, 255, 255, 0.08);
    
    --ig-text-primary: #f8fafc;
    --ig-text-secondary: #94a3b8;
    --ig-text-muted: #64748b;
    
    --ig-blue: #0095f6;
    --ig-blue-hover: #1877f2;
    --ig-heart-red: #ef4444;
    
    /* Requested Color Accents: Vibrant Purple #7b00ad & Deep Royal Blue #0044ff */
    --primary-purple: #7b00ad;
    --primary-blue: #0044ff;
    --primary-gradient: linear-gradient(135deg, #7b00ad 0%, #0044ff 100%);
    --ig-story-gradient: linear-gradient(45deg, #a855f7 0%, #7b00ad 50%, #0044ff 100%);
    --dirso-gradient: linear-gradient(135deg, #a855f7 0%, #0044ff 100%);
    --purple-glow: rgba(123, 0, 173, 0.4);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);

    /* Helvetica Font */
    --font-heading: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 9999px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Overrides for Instagram Web */
[data-theme="light"] {
    --ig-bg: #ffffff;
    --ig-surface: #fafafa;
    --ig-card-bg: #ffffff;
    --ig-border: #dbdbdb;
    --ig-hover-bg: rgba(0, 0, 0, 0.05);
    
    --ig-text-primary: #000000;
    --ig-text-secondary: #737373;
    --ig-text-muted: #8e8e8e;
}

/* RESET & LAYOUT */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body.ig-dark-body {
    font-family: var(--font-body);
    background-color: var(--ig-bg);
    color: var(--ig-text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.text-center { text-align: center; }
.hidden { display: none !important; }

.ig-gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* App Shell Layout */
.ig-app-shell {
    display: flex;
    min-height: 100vh;
}

/* LEFT SIDEBAR */
.ig-sidebar {
    width: 255px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    border-right: 1px solid var(--ig-border);
    padding: 20px 10px;
    z-index: 100;
    background: var(--ig-bg);
}

.ig-sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.ig-brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 8px;
    margin-bottom: 24px;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.ig-logo-text {
    white-space: nowrap;
    display: inline-flex;
    gap: 4px;
}

.ig-logo-icon {
    font-size: 1.8rem;
    color: #63008a;
}

.ig-nav-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ig-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--ig-text-primary);
    white-space: nowrap;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}

.ig-nav-item span {
    white-space: nowrap;
}

.ig-nav-item i {
    font-size: 1.3rem;
    width: 24px;
    text-align: center;
}

.ig-nav-item:hover, .ig-nav-item.active {
    background-color: var(--ig-hover-bg);
    font-weight: 700;
}

.ig-nav-item.active i {
    color: #63008a;
}

.ig-unread-badge {
    position: absolute;
    right: 16px;
    background: #ef4444;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ig-sidebar-footer {
    margin-top: auto;
}

/* MAIN FEED AREA */
.ig-main-content {
    margin-left: 255px;
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 30px 20px;
    gap: 40px;
}

.ig-feed-container {
    width: 100%;
    max-width: 630px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* STORIES HIGHLIGHTS BAR */
.ig-stories-bar {
    background: var(--ig-card-bg);
    border: 1px solid var(--ig-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    overflow-x: auto;
    scrollbar-width: none;
}

.ig-stories-bar::-webkit-scrollbar { display: none; }

.ig-stories-scroll {
    display: flex;
    gap: 18px;
    align-items: center;
}

.ig-story-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.ig-story-ring {
    width: 66px;
    height: 66px;
    border-radius: 50%;
    padding: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.ig-story-item:hover .ig-story-ring {
    transform: scale(1.05);
}

.gradient-ring { background: var(--primary-gradient); }
.red-ring { background: linear-gradient(45deg, #ef4444, #9d26d7); }
.blue-ring { background: linear-gradient(45deg, #00278a, #00c2ff); }
.cyan-ring { background: linear-gradient(45deg, #00c2ff, #63008a); }
.purple-ring { background: linear-gradient(45deg, #63008a, #d7269d); }
.green-ring { background: linear-gradient(45deg, #10b981, #00278a); }

.ig-story-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--ig-bg);
}

.ig-story-badge-inner {
    width: 100%;
    height: 100%;
    background: var(--ig-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #63008a;
    font-size: 1.2rem;
}

.ig-story-label {
    font-size: 0.75rem;
    color: var(--ig-text-secondary);
    max-width: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* INSTAGRAM POST CARD */
.ig-post-card {
    background: var(--ig-card-bg);
    border: 1px solid var(--ig-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.ig-post-card:hover {
    border-color: rgba(123, 0, 173, 0.3);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6), 0 0 20px rgba(123, 0, 173, 0.12);
}

/* Post Header */
.ig-post-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.ig-post-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ig-user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
}

.ig-username-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ig-username {
    font-weight: 700;
    font-size: 0.95rem;
}

.ig-verified-icon {
    color: var(--ig-blue);
    font-size: 0.85rem;
}

.ig-post-dot {
    color: var(--ig-text-muted);
    font-size: 0.75rem;
}

.ig-follow-btn {
    color: var(--ig-blue);
    font-weight: 700;
    font-size: 0.85rem;
}

.ig-follow-btn:hover {
    color: var(--ig-blue-hover);
}

.ig-collab-tag {
    font-size: 0.75rem;
    color: var(--ig-text-secondary);
    background: var(--ig-hover-bg);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.ig-post-location {
    font-size: 0.75rem;
    color: var(--ig-text-secondary);
    display: block;
}

.ig-post-more-btn {
    font-size: 1.1rem;
    color: var(--ig-text-secondary);
}

/* Post Media */
.ig-post-media {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #000000;
    overflow: hidden;
    border: none;
}

.ig-post-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
}

.ig-post-video-iframe, .ig-post-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: none;
    background: #000000;
}

/* BRAND LOGOS CAROUSEL */
.ig-carousel-counter {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--ig-text-secondary);
    background: var(--ig-hover-bg);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}

.ig-carousel-media {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
}

.ig-carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(8px);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.ig-carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.45);
    transform: translateY(-50%) scale(1.1);
}

.arrow-left { left: 16px; }
.arrow-right { right: 16px; }

.ig-carousel-slides {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ig-slide {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
}

.ig-slide.active {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    animation: fadeIn 0.3s ease;
}

.ig-logo-slide-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: none;
    padding: 18px 18px 48px 18px;
}

.ig-slide-name {
    position: absolute;
    bottom: 16px;
    background: rgba(14, 14, 18, 0.85);
    backdrop-filter: blur(12px);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.5px;
    z-index: 5;
    pointer-events: none;
}

/* RECOMMENDATIONS CAROUSEL STYLING */
.ig-rec-carousel-media {
    background: #000000;
    aspect-ratio: 1 / 1;
    width: 100%;
}

.ig-rec-img-link {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.ig-rec-slide-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    padding: 0;
}

.ig-linkedin-badge-pill {
    background: #0077b5;
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 119, 181, 0.4);
}

.ig-rec-author-block {
    margin-bottom: 6px;
}

.ig-rec-name {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--ig-text-primary);
}

.ig-rec-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: #0095f6;
    display: block;
}

.ig-rec-quote-text {
    font-size: 0.925rem;
    color: var(--ig-text-secondary);
    line-height: 1.6;
    font-style: italic;
    background: rgba(255, 255, 255, 0.03);
    padding: 14px 18px;
    border-left: 3px solid #63008a;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 8px 0;
}

.ig-rec-link-bar {
    margin-top: 4px;
}

.ig-rec-linkedin-link {
    color: #0095f6;
    font-size: 0.85rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.ig-rec-linkedin-link:hover {
    text-decoration: underline;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

/* Services Container inside Post */
.ig-services-container {
    padding: 30px 20px;
    background: linear-gradient(135deg, rgba(99, 0, 138, 0.15) 0%, rgba(0, 39, 138, 0.15) 100%);
}

.ig-services-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ig-service-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--ig-border);
    border-radius: var(--radius-md);
    padding: 16px;
}

.ig-service-icon-box {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--primary-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.ig-service-item h4 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.ig-service-item p {
    font-size: 0.85rem;
    color: var(--ig-text-secondary);
}

/* Post Action Bar */
.ig-post-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
}

.ig-actions-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ig-action-btn {
    font-size: 1.5rem;
    color: var(--ig-text-primary);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.ig-action-btn:hover {
    transform: scale(1.1);
    color: var(--ig-text-secondary);
}

.ig-case-details-pill {
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    background: var(--primary-gradient);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Post Likes */
.ig-post-likes {
    padding: 0 16px;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

/* Post Caption & Copy */
.ig-post-caption {
    padding: 0 16px 12px;
    font-size: 0.925rem;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ig-caption-username {
    font-weight: 700;
    margin-right: 6px;
}

.ig-caption-body {
    color: var(--ig-text-secondary);
    font-size: 0.9rem;
}

.ig-hashtags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.ig-hashtags span {
    color: var(--ig-blue);
    font-size: 0.85rem;
    font-weight: 600;
}

.ig-post-stats-strip {
    display: flex;
    gap: 10px;
    margin: 8px 0;
}

.ig-stat-pill {
    background: var(--ig-hover-bg);
    border: 1px solid var(--ig-border);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--ig-text-secondary);
}

.ig-comments-preview {
    padding: 0 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ig-view-comments-btn {
    color: var(--ig-text-muted);
    font-size: 0.85rem;
    text-align: left;
}

.ig-comment-single {
    font-size: 0.85rem;
}

.ig-comment-single strong {
    font-weight: 700;
    margin-right: 6px;
}

.ig-comment-single span {
    color: var(--ig-text-secondary);
}

.ig-post-time {
    font-size: 0.7rem;
    color: var(--ig-text-muted);
    letter-spacing: 0.05em;
    margin-top: 4px;
    display: block;
}

.ig-post-comment-input-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-top: 1px solid var(--ig-border);
}

.ig-emoji-icon {
    font-size: 1.3rem;
    color: var(--ig-text-secondary);
}

.ig-comment-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--ig-text-primary);
    font-size: 0.9rem;
    font-family: inherit;
}

.ig-comment-post-btn {
    color: var(--ig-blue);
    font-weight: 700;
    font-size: 0.875rem;
}

.ig-calc-widget-media {
    padding: 24px;
    background: var(--ig-surface);
    max-height: none;
}

.ig-calc-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

/* RIGHT SIDEBAR */
.ig-right-sidebar {
    width: 320px;
    display: flex;
    flex-direction: column;
}

.ig-profile-widget {
    position: sticky;
    top: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ig-profile-user-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ig-profile-avatar-lg {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}

.ig-profile-username {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 1rem;
}

.ig-profile-fullname {
    display: block;
    font-size: 0.85rem;
    color: var(--ig-text-secondary);
}

.ig-profile-sub {
    font-size: 0.75rem;
    color: var(--ig-text-muted);
}

.ig-profile-bio-card {
    background: var(--ig-surface);
    border: 1px solid var(--ig-border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.ig-profile-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    text-align: center;
}

.ig-stat-box {
    display: flex;
    flex-direction: column;
}

.ig-stat-num {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--ig-text-primary);
}

.ig-stat-lbl {
    font-size: 0.75rem;
    color: var(--ig-text-muted);
}

.ig-suggestions-box {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: 540px;
    overflow-y: auto;
    padding-right: 6px;
}

.ig-suggestions-box::-webkit-scrollbar {
    width: 4px;
}

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

.ig-suggestions-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--ig-text-secondary);
}

.ig-see-all {
    color: var(--ig-text-primary);
    font-size: 0.75rem;
}

.ig-suggestion-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.ig-sug-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
}

.ig-sug-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ig-sug-username {
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ig-sug-sub {
    font-size: 0.75rem;
    color: var(--ig-text-muted);
}

.ig-sug-link {
    color: var(--ig-blue);
    font-size: 0.8rem;
    font-weight: 700;
}

.ig-right-footer {
    font-size: 0.7rem;
    color: var(--ig-text-muted);
    letter-spacing: 0.05em;
    margin-top: 10px;
}

/* BUTTONS & CALCULATOR */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
}

.btn-primary:hover { opacity: 0.9; }
.btn-block { width: 100%; }

.platform-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.platform-btn {
    padding: 10px;
    border-radius: var(--radius-sm);
    background: var(--ig-hover-bg);
    border: 1px solid var(--ig-border);
    color: var(--ig-text-secondary);
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.platform-btn.active {
    border-color: #63008a;
    background: rgba(99, 0, 138, 0.2);
    color: var(--ig-text-primary);
}

.custom-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--ig-border);
    outline: none;
    -webkit-appearance: none;
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #63008a;
    cursor: pointer;
}

.result-box {
    padding: 12px;
    background: var(--ig-hover-bg);
    border-radius: var(--radius-sm);
    border-left: 3px solid #63008a;
    margin-bottom: 10px;
}

.result-label { font-size: 0.75rem; color: var(--ig-text-muted); }
.result-number { font-size: 1.6rem; font-weight: 800; display: block; }
.result-sub { font-size: 0.75rem; color: var(--accent-emerald); }

/* MODAL SYSTEM */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: none !important;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-backdrop.active {
    display: flex !important;
    opacity: 1;
    visibility: visible;
}

.modal-card {
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 30px;
    position: relative;
    background: var(--ig-surface);
    border: 1px solid var(--ig-border);
    border-radius: var(--radius-lg);
}

.modal-lg { max-width: 760px; }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 1.2rem;
    color: var(--ig-text-secondary);
}

.modal-header { margin-bottom: 20px; }
.modal-title { font-size: 1.5rem; margin-bottom: 6px; }
.modal-desc { color: var(--ig-text-secondary); font-size: 0.9rem; }

.modal-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.8rem; font-weight: 700; color: var(--ig-text-secondary); }

.form-input {
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--ig-bg);
    border: 1px solid var(--ig-border);
    color: var(--ig-text-primary);
    font-size: 0.9rem;
    outline: none;
}

.form-input:focus { border-color: var(--ig-blue); }

.form-success-message { text-align: center; padding: 30px 20px; }
.success-icon { font-size: 3rem; color: var(--accent-emerald); margin-bottom: 12px; }

/* MOBILE INSTAGRAM APP INTERFACE STYLES */
.ig-mobile-top-bar, .ig-mobile-bottom-bar {
    display: none;
}

/* RESPONSIVE MEDIA QUERIES */
@media (max-width: 1100px) {
    .ig-right-sidebar { display: none; }
}

@media (max-width: 768px) {
    /* Top Header Bar */
    .ig-mobile-top-bar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 54px;
        background: var(--ig-bg);
        border-bottom: 1px solid var(--ig-border);
        padding: 0 16px;
        z-index: 900;
    }

    .ig-mobile-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--ig-text-primary);
    }

    .ig-mobile-top-actions {
        display: flex;
        align-items: center;
        gap: 18px;
    }

    .ig-mobile-icon-btn {
        position: relative;
        font-size: 1.4rem;
        color: var(--ig-text-primary);
    }

    /* Hide Desktop Sidebar on Mobile Devices */
    .ig-sidebar {
        display: none !important;
    }

    /* Main Feed Layout Adjustments */
    .ig-main-content {
        margin-left: 0 !important;
        padding: 54px 0 60px 0 !important;
    }

    .ig-feed-container {
        max-width: 100% !important;
    }

    /* Stories Bar on Mobile */
    .ig-stories-bar {
        padding: 12px 10px !important;
        border-radius: 0 !important;
        border-left: none !important;
        border-right: none !important;
    }

    /* Native Edge-to-Edge Instagram Mobile Feed Posts */
    .ig-post-card {
        border-radius: 0 !important;
        border-left: none !important;
        border-right: none !important;
        margin-bottom: 12px !important;
    }

    .ig-post-header {
        padding: 10px 14px !important;
    }

    .ig-post-actions {
        padding: 12px 14px 6px 14px !important;
    }

    .ig-post-likes, .ig-post-caption, .ig-comments-preview, .ig-post-comment-input-box {
        padding-left: 14px !important;
        padding-right: 14px !important;
    }

    /* Fixed Instagram App Mobile Bottom Navigation Bar */
    .ig-mobile-bottom-bar {
        display: flex;
        align-items: center;
        justify-content: space-around;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 52px;
        background: var(--ig-bg);
        border-top: 1px solid var(--ig-border);
        z-index: 900;
    }

    .ig-mobile-nav-item {
        font-size: 1.35rem;
        color: var(--ig-text-primary);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .ig-mobile-nav-avatar {
        width: 26px;
        height: 26px;
        border-radius: 50%;
        object-fit: cover;
        border: 2px solid var(--ig-text-primary);
    }

    /* Native Bottom Sheet Drawer Modals for Mobile */
    .modal-backdrop {
        align-items: flex-end !important;
    }

    .modal-card {
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 20px 20px 0 0 !important;
        position: fixed !important;
        bottom: 0 !important;
        max-height: 88vh !important;
        padding: 24px 18px !important;
    }

    .form-row { grid-template-columns: 1fr; }
}