:root {
    --accent: #E8573A;
    --accent-light: #F4755C;
    --accent-bg: #FFF5F3;
    --accent-glow: rgba(232, 87, 58, 0.15);
    --dark: #0F0F12;
    --dark-card: #1A1A22;
    --dark-card-hover: #222230;
    --dark-surface: #141418;
    --gray-900: #E0E0E4;
    --gray-700: #A0A0AA;
    --gray-500: #6B6B78;
    --gray-300: #3A3A48;
    --gray-100: #25252F;
    --white: #FFFFFF;
    --gradient-warm: linear-gradient(135deg, #E8573A 0%, #F4A261 50%, #E76F51 100%);
    --gradient-dark: linear-gradient(180deg, #0F0F12 0%, #1A1A22 100%);
    --glass-bg: rgba(26, 26, 34, 0.8);
    --glass-border: rgba(255, 255, 255, 0.06);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(232, 87, 58, 0.12);
}

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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--gray-900);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 18, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    font-size: 22px;
}

.brand-name {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--white);
}

.brand-tag {
    font-size: 10px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(232, 87, 58, 0.12);
    padding: 3px 10px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.header-nav {
    display: flex;
    gap: 4px;
}

.nav-btn {
    background: none;
    border: 1px solid transparent;
    color: var(--gray-500);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.nav-btn:hover {
    color: var(--gray-900);
    background: var(--gray-100);
}

.nav-btn.active {
    color: var(--accent);
    background: rgba(232, 87, 58, 0.1);
    border-color: rgba(232, 87, 58, 0.2);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 80px 32px 60px;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.5px;
    color: var(--accent);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.2;
    color: var(--white);
    letter-spacing: -2px;
    margin-bottom: 20px;
}

.hero-highlight {
    background: var(--gradient-warm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 16px;
    color: var(--gray-700);
    line-height: 1.8;
    max-width: 540px;
}

.hero-decoration {
    position: absolute;
    top: -80px;
    right: -60px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(232, 87, 58, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* ===== FLOW ===== */
.flow-section {
    padding: 0 32px 48px;
}

.flow-inner {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px 32px;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: default;
}

.flow-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: var(--gray-100);
    border: 2px solid var(--gray-300);
    transition: all 0.4s ease;
}

.flow-circle.active {
    background: rgba(232, 87, 58, 0.12);
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(232, 87, 58, 0.2);
}

.flow-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-500);
    text-align: center;
    max-width: 80px;
    line-height: 1.4;
}

.flow-arrow {
    font-size: 18px;
    color: var(--gray-300);
    margin: 0 12px;
    margin-bottom: 28px;
}

/* ===== SECTIONS ===== */
.section {
    padding: 0 32px 60px;
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 32px;
}

/* ===== INPUT AREA ===== */
.input-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 48px;
}

.input-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.step-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--white);
    background: var(--accent);
    padding: 5px 14px;
    border-radius: 20px;
}

.input-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 28px;
    max-width: 600px;
}

.input-row {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.keyword-input {
    flex: 1;
    background: var(--dark-surface);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    padding: 16px 24px;
    font-family: inherit;
    font-size: 16px;
    color: var(--white);
    outline: none;
    transition: all 0.3s ease;
}

.keyword-input::placeholder {
    color: var(--gray-500);
}

.keyword-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(232, 87, 58, 0.1);
}

.generate-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-warm);
    border: none;
    color: var(--white);
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    padding: 16px 32px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(232, 87, 58, 0.3);
}

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

.btn-icon {
    font-size: 18px;
}

.quick-keywords {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.quick-label {
    font-size: 12px;
    color: var(--gray-500);
    font-weight: 500;
}

.quick-tag {
    font-size: 12px;
    color: var(--gray-700);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.quick-tag:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(232, 87, 58, 0.08);
}

/* ===== LOADING ===== */
.loading-area {
    text-align: center;
    padding: 60px 0;
}

.loading-card {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 48px 64px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--gray-300);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-text {
    font-size: 15px;
    color: var(--gray-700);
    font-weight: 500;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: var(--gray-300);
    border-radius: 4px;
    overflow: hidden;
}

.loading-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-warm);
    border-radius: 4px;
    animation: loadingFill 1.5s ease forwards;
}

@keyframes loadingFill {
    to {
        width: 100%;
    }
}

/* ===== RESULTS ===== */
.results-header,
.persona-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.results-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.reset-btn,
.back-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.reset-btn:hover,
.back-btn:hover {
    color: var(--white);
    border-color: var(--gray-500);
}

.idea-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

/* ===== IDEA CARD ===== */
.idea-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    animation: cardFadeIn 0.5s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.idea-card:nth-child(1) {
    animation-delay: 0.1s;
}

.idea-card:nth-child(2) {
    animation-delay: 0.2s;
}

.idea-card:nth-child(3) {
    animation-delay: 0.3s;
}

.idea-card:nth-child(4) {
    animation-delay: 0.4s;
}

.idea-card:nth-child(5) {
    animation-delay: 0.5s;
}

@keyframes cardFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.idea-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-warm);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.idea-card:hover {
    border-color: rgba(232, 87, 58, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.idea-card:hover::before {
    opacity: 1;
}

.idea-card .card-emoji {
    font-size: 36px;
    margin-bottom: 16px;
}

.idea-card .card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    line-height: 1.4;
}

.idea-card .card-twist {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding: 10px 14px;
    background: rgba(232, 87, 58, 0.06);
    border-radius: 8px;
    border: 1px solid rgba(232, 87, 58, 0.1);
}

.twist-before {
    font-size: 12px;
    color: var(--gray-500);
}

.twist-arrow {
    font-size: 14px;
    color: var(--accent);
    font-weight: 700;
}

.twist-after {
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
}

.idea-card .card-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--gray-700);
    margin-bottom: 16px;
}

.idea-card .card-cta {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.saved-card-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.saved-idea-card .saved-keyword {
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.saved-star {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--gray-500);
    cursor: pointer;
    transition: all 0.25s ease;
    padding: 4px;
    line-height: 1;
}

.saved-star:hover {
    color: #fbbf24;
    transform: scale(1.2);
}

.saved-star.starred {
    color: #fbbf24;
    text-shadow: 0 0 8px rgba(251, 191, 36, 0.4);
}

/* ===== PERSONA ===== */
.persona-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.persona-selected-idea {
    grid-column: 1 / -1;
    background: var(--dark-card);
    border: 1px solid rgba(232, 87, 58, 0.2);
    border-radius: var(--radius);
    padding: 32px;
}

.persona-selected-idea h3 {
    font-size: 18px;
    color: var(--white);
    font-weight: 700;
    margin-bottom: 8px;
}

.persona-selected-idea p {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.7;
}

.persona-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px;
    animation: cardFadeIn 0.5s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

.persona-card:nth-child(2) {
    animation-delay: 0.15s;
}

.persona-card:nth-child(3) {
    animation-delay: 0.3s;
}

.persona-card:nth-child(4) {
    animation-delay: 0.45s;
}

.persona-card .persona-icon {
    font-size: 40px;
    margin-bottom: 14px;
}

.persona-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
}

.persona-card .persona-sub {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.persona-card .persona-detail {
    font-size: 13px;
    line-height: 1.75;
    color: var(--gray-700);
    margin-bottom: 16px;
}

.persona-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.persona-tag {
    font-size: 11px;
    color: var(--accent);
    background: rgba(232, 87, 58, 0.08);
    border: 1px solid rgba(232, 87, 58, 0.15);
    padding: 4px 12px;
    border-radius: 16px;
    font-weight: 500;
}

.marketing-card {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(232, 87, 58, 0.08) 0%, rgba(244, 162, 97, 0.05) 100%);
    border: 1px solid rgba(232, 87, 58, 0.15);
    border-radius: var(--radius);
    padding: 32px;
    animation: cardFadeIn 0.5s ease 0.6s forwards;
    opacity: 0;
}

.marketing-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
}

.marketing-points {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

.marketing-point {
    background: var(--dark-card);
    border-radius: var(--radius-sm);
    padding: 20px;
}

.marketing-point h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.marketing-point p {
    font-size: 12px;
    line-height: 1.6;
    color: var(--gray-700);
}

/* ===== TRENDING ===== */
.trending-header {
    margin-bottom: 32px;
}

.trending-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}

.trending-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: cardFadeIn 0.5s ease forwards;
    opacity: 0;
}

.trending-card:hover {
    border-color: rgba(232, 87, 58, 0.3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.trending-card .trend-emoji {
    font-size: 32px;
    margin-bottom: 12px;
}

.trending-card .trend-keyword {
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 6px;
}

.trending-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
    line-height: 1.4;
}

.trending-card p {
    font-size: 13px;
    color: var(--gray-700);
    line-height: 1.65;
}

.season-area {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 32px;
}

.season-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
}

.season-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.season-tag {
    font-size: 13px;
    color: var(--gray-700);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    padding: 10px 20px;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    font-weight: 500;
}

.season-tag:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(232, 87, 58, 0.08);
}

.season-tag .tag-icon {
    margin-right: 6px;
}

/* ===== FOOTER ===== */
.app-footer {
    border-top: 1px solid var(--glass-border);
    padding: 40px 32px;
    text-align: center;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.app-footer p {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 500;
}

.footer-sub {
    margin-top: 6px;
    font-size: 11px !important;
    color: var(--gray-300) !important;
    letter-spacing: 0.5px;
}

/* ===== SETTINGS BTN ===== */
.settings-btn {
    color: var(--gray-500) !important;
    background: none !important;
    border: 1px solid var(--gray-300) !important;
}

.settings-btn:hover {
    color: var(--accent) !important;
    border-color: var(--accent) !important;
    background: rgba(232, 87, 58, 0.06) !important;
}

.settings-btn.has-key {
    color: #4ade80 !important;
    border-color: rgba(74, 222, 128, 0.3) !important;
    background: rgba(74, 222, 128, 0.06) !important;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: modalFadeIn 0.25s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    overflow: hidden;
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 32px;
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
}

.modal-close {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.modal-close:hover {
    color: var(--white);
    background: var(--gray-100);
}

.modal-body {
    padding: 28px 32px;
}

.modal-desc {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}

.api-input-row {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.api-key-input {
    flex: 1;
    background: var(--dark-surface);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-family: inherit;
    font-size: 14px;
    color: var(--white);
    outline: none;
    transition: all 0.3s ease;
}

.api-key-input::placeholder {
    color: var(--gray-500);
}

.api-key-input:focus {
    border-color: var(--accent);
}

.api-toggle-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-500);
    font-size: 16px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.api-toggle-btn:hover {
    background: var(--gray-300);
}

.api-status {
    font-size: 12px;
    min-height: 20px;
    margin-bottom: 16px;
    font-weight: 500;
}

.api-status.success {
    color: #4ade80;
}

.api-status.error {
    color: #f87171;
}

.api-status.info {
    color: var(--gray-500);
}

.modal-actions {
    display: flex;
    gap: 10px;
}

.modal-save-btn {
    flex: 1;
    background: var(--gradient-warm);
    border: none;
    color: var(--white);
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.modal-save-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(232, 87, 58, 0.3);
}

.modal-delete-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-500);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.modal-delete-btn:hover {
    color: #f87171;
    border-color: #f87171;
}

/* ===== TRENDING HEADER ROW ===== */
.trending-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.recommend-generate-btn {
    flex-shrink: 0;
}

.recommend-loading {
    text-align: center;
    padding: 40px 0;
}

.recommend-bar-fill {
    animation: loadingFill 4s ease forwards !important;
}

/* ===== AI BADGE ===== */
.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: 700;
    color: #a78bfa;
    background: rgba(167, 139, 250, 0.1);
    border: 1px solid rgba(167, 139, 250, 0.2);
    padding: 3px 10px;
    border-radius: 12px;
    letter-spacing: 0.5px;
}

/* ===== ERROR TOAST ===== */
.error-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    background: #1e1e2e;
    border: 1px solid #f87171;
    color: #fca5a5;
    font-family: inherit;
    font-size: 14px;
    padding: 14px 28px;
    border-radius: 12px;
    z-index: 2000;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 3.7s forwards;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

@keyframes toastIn {
    from {
        transform: translateX(-50%) translateY(20px);
        opacity: 0;
    }
}

@keyframes toastOut {
    to {
        transform: translateX(-50%) translateY(20px);
        opacity: 0;
    }
}

/* ===== IDEA LIST ===== */
.idealist-header {
    margin-bottom: 28px;
}

.idealist-search-row {
    flex-shrink: 0;
    display: flex;
    gap: 8px;
    align-items: center;
}

.star-filter-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-500);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.star-filter-btn:hover {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.3);
    background: rgba(251, 191, 36, 0.08);
}

.star-filter-btn.active {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.4);
    background: rgba(251, 191, 36, 0.12);
    box-shadow: 0 0 12px rgba(251, 191, 36, 0.15);
}

.idea-search-input {
    background: var(--dark-surface);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    font-family: inherit;
    font-size: 14px;
    color: var(--white);
    outline: none;
    width: 300px;
    transition: all 0.3s ease;
}

.idea-search-input::placeholder {
    color: var(--gray-500);
}

.idea-search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(232, 87, 58, 0.1);
}

.idealist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

.saved-idea-card {
    background: var(--dark-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px;
    position: relative;
    transition: all 0.3s ease;
    animation: cardFadeIn 0.4s ease forwards;
    opacity: 0;
}

.saved-idea-card:hover {
    border-color: rgba(232, 87, 58, 0.2);
    box-shadow: var(--shadow-glow);
}

.saved-idea-card .saved-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.saved-idea-card .saved-keyword {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent);
    background: rgba(232, 87, 58, 0.1);
    padding: 4px 12px;
    border-radius: 16px;
}

.saved-idea-card .saved-delete {
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 16px;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.2s;
    opacity: 0;
}

.saved-idea-card:hover .saved-delete {
    opacity: 1;
}

.saved-idea-card .saved-delete:hover {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
}

.saved-idea-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    line-height: 1.4;
}

.saved-idea-card .saved-twist {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 12px;
}

.saved-idea-card .saved-twist .arrow {
    color: var(--accent);
    font-weight: 700;
}

.saved-idea-card .saved-desc {
    font-size: 13px;
    line-height: 1.65;
    color: var(--gray-700);
    margin-bottom: 12px;
}

.saved-idea-card .saved-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--gray-500);
}

.saved-idea-card .saved-concept {
    color: var(--accent);
    font-weight: 600;
}

.saved-card-cta {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--glass-border);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.saved-card-cta:hover {
    color: var(--accent-light);
    transform: translateX(4px);
}

.persona-saved-badge {
    font-size: 10px;
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.2);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    margin-left: 4px;
}

/* ===== IDEALIST PERSONA AREA ===== */
.idealist-persona-area {
    animation: cardFadeIn 0.3s ease forwards;
}

.idealist-persona-area .persona-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.empty-card {
    text-align: center;
    padding: 80px 40px;
    background: var(--dark-card);
    border: 1px dashed var(--gray-300);
    border-radius: var(--radius-lg);
}

.empty-card .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.empty-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== UTILITY ===== */
.hidden {
    display: none !important;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero {
        padding: 48px 20px 36px;
    }

    .hero-title {
        font-size: 32px;
        letter-spacing: -1px;
    }

    .flow-inner {
        flex-wrap: wrap;
        padding: 20px;
        gap: 4px;
    }

    .flow-arrow {
        margin: 0 6px;
        font-size: 14px;
    }

    .section {
        padding: 0 20px 40px;
    }

    .input-card {
        padding: 28px 24px;
    }

    .input-row {
        flex-direction: column;
    }

    .idea-grid {
        grid-template-columns: 1fr;
    }

    .persona-content {
        grid-template-columns: 1fr;
    }

    .marketing-points {
        grid-template-columns: 1fr;
    }

    .header-inner {
        padding: 0 16px;
    }

    .header-brand .brand-tag {
        display: none;
    }

    .trending-grid {
        grid-template-columns: 1fr;
    }
}