/* ==========================================================================
   TK ABOUT PAGE - LUXURY CONSULTING & CORPORATE EDITORIAL STYLESHEET
   Matching: Concept Mockup (Ivory / Champagne Gold / Forest Green)
   ========================================================================== */

/* Design Tokens for About Page */
:root {
    --tk-about-ivory: #FAF6EE;
    --tk-about-cream: #FCF9F2;
    --tk-about-surface: #FFFFFF;
    --tk-about-forest: #123D2C;
    --tk-about-forest-deep: #0D2D20;
    --tk-about-forest-soft: #174A36;
    --tk-about-gold: #C2932E;
    --tk-about-gold-champagne: #E5C278;
    --tk-about-gold-muted: #B8882D;
    --tk-about-gold-subtle: rgba(194, 147, 46, 0.15);
    --tk-about-gold-bg: #F5EBD9;
    --tk-about-text-dark: #171510;
    --tk-about-text-muted: #5E584E;
    --tk-about-text-light: #F7F3EB;
    --tk-about-border: rgba(194, 147, 46, 0.16);
    --tk-about-font-heading: 'Cormorant Garamond', Georgia, serif;
    --tk-about-font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Base About Wrapper */
.tk-about-page {
    background-color: var(--tk-about-cream);
    color: var(--tk-about-text-dark);
    font-family: var(--tk-about-font-body);
    line-height: 1.65;
    overflow-x: hidden;
}

/* Typography Utilities */
.tk-about-eyebrow {
    display: inline-block;
    font-family: var(--tk-about-font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--tk-about-gold);
    margin-bottom: 0.85rem;
}

.tk-about-eyebrow-light {
    color: var(--tk-about-gold-champagne);
}

.tk-about-heading-display {
    font-family: var(--tk-about-font-heading);
    font-size: clamp(2.35rem, 4.2vw, 3.85rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: normal;
    color: var(--tk-about-text-dark);
}

.tk-about-heading-lg {
    font-family: var(--tk-about-font-heading);
    font-size: clamp(2rem, 3.2vw, 2.75rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: normal;
    color: var(--tk-about-text-dark);
}

.tk-about-heading-md {
    font-family: var(--tk-about-font-heading);
    font-size: clamp(1.75rem, 2.6vw, 2.3rem);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: normal;
    color: var(--tk-about-text-dark);
}

.tk-about-italic-gold {
    font-family: var(--tk-about-font-heading);
    font-style: italic;
    font-weight: 500;
    color: var(--tk-about-gold);
}

.tk-about-lead {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--tk-about-text-muted);
}

/* Subtle Botanical / Wave Background Accents */
.tk-about-bg-pattern {
    position: relative;
}

.tk-about-bg-pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(194, 147, 46, 0.035) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(18, 61, 44, 0.03) 0%, transparent 45%);
    pointer-events: none;
    z-index: 0;
}

.tk-about-bg-pattern > * {
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   01. PAGE HERO (Background Image with Editorial Overlay)
   ========================================================================== */
.tk-about-hero {
    position: relative;
    background-color: #FCF9F2;
    background-size: cover;
    background-position: right center;
    background-repeat: no-repeat;
    min-height: 640px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--tk-about-border);
    overflow: hidden;
}

.tk-about-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg, 
        rgba(252, 249, 242, 0.50) 0%, 
        rgba(252, 249, 242, 0.26) 45%, 
        rgba(252, 249, 242, 0.04) 75%, 
        transparent 100%
    );
    pointer-events: none;
    z-index: 1;
}

.tk-about-hero .container {
    position: relative;
    z-index: 2;
}

.tk-about-hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4.5rem 0;
    max-width: 680px;
    text-shadow: 0 1px 3px rgba(255, 255, 255, 0.85), 0 2px 8px rgba(252, 249, 242, 0.65);
}

.tk-about-hero-breadcrumb {
    margin-bottom: 1.25rem;
}

.tk-about-hero-breadcrumb nav ol {
    display: flex;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.875rem;
}

.tk-about-hero-breadcrumb a {
    color: var(--tk-about-text-muted);
    text-decoration: none;
    transition: color 0.25s ease;
}

.tk-about-hero-breadcrumb a:hover {
    color: var(--tk-about-gold);
}

.tk-about-hero-breadcrumb .separator {
    margin: 0 0.5rem;
    color: rgba(94, 88, 78, 0.5);
    font-size: 0.8rem;
}

.tk-about-hero-breadcrumb .current {
    color: var(--tk-about-gold);
    font-weight: 500;
}

/* ==========================================================================
   02. CÂU CHUYỆN TK (Brand Story)
   ========================================================================== */
.tk-about-story-section {
    padding: 7rem 0;
    background-color: var(--tk-about-ivory);
    position: relative;
}

.tk-about-story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4.5rem;
    align-items: center;
}

.tk-about-story-media {
    position: relative;
}

.tk-about-story-img {
    width: 100%;
    height: auto;
    max-height: 480px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: 0 16px 36px rgba(23, 21, 16, 0.06);
    border: 1px solid rgba(194, 147, 46, 0.15);
    display: block;
}

.tk-about-story-content {
    padding-left: 0.5rem;
}

.tk-about-story-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--tk-about-text-muted);
    margin-bottom: 1.5rem;
}

.tk-about-pill-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #C2932E 0%, #A97E25 100%);
    color: #FFFFFF;
    padding: 0.8rem 1.8rem;
    border-radius: 999px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(194, 147, 46, 0.22);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    margin-top: 0.75rem;
}

.tk-about-pill-btn:hover {
    color: #FFFFFF;
    background: linear-gradient(135deg, #D4A33B 0%, #B8882D 100%);
    box-shadow: 0 12px 28px rgba(194, 147, 46, 0.35);
    transform: translateY(-2px);
}

.tk-about-pill-btn i {
    transition: transform 0.25s ease;
}

.tk-about-pill-btn:hover i {
    transform: translateX(4px);
}

/* ==========================================================================
   03. GIÁ TRỊ KHÁCH HÀNG NHẬN ĐƯỢC (4 Value Cards)
   ========================================================================== */
.tk-about-values-section {
    padding: 6.5rem 0 7rem;
    background-color: var(--tk-about-cream);
    position: relative;
}

.tk-about-section-header {
    text-align: center;
    max-width: 780px;
    margin: 0 auto 3.75rem;
}

.tk-about-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.75rem;
}

.tk-about-value-card {
    background: var(--tk-about-surface);
    border-radius: 20px;
    padding: 2.5rem 1.75rem;
    border: 1px solid var(--tk-about-border);
    box-shadow: 0 10px 28px rgba(23, 21, 16, 0.03);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.tk-about-value-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(194, 147, 46, 0.12);
    border-color: rgba(194, 147, 46, 0.35);
}

.tk-about-value-icon {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background-color: var(--tk-about-gold-bg);
    border: 1px solid rgba(194, 147, 46, 0.25);
    color: var(--tk-about-gold-muted);
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: transform 0.35s ease;
}

.tk-about-value-card:hover .tk-about-value-icon {
    transform: scale(1.06);
    background-color: #EFE1C8;
}

.tk-about-value-title {
    font-family: var(--tk-about-font-body);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--tk-about-text-dark);
    margin-bottom: 0.75rem;
}

.tk-about-value-desc {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--tk-about-text-muted);
    margin: 0;
}

/* ==========================================================================
   04. SỨ MỆNH – TẦM NHÌN (Forest Green Split Banner)
   ========================================================================== */
.tk-about-mission-section {
    padding: 3rem 0 6rem;
    background-color: var(--tk-about-cream);
}

.tk-about-mission-box {
    border-radius: 28px;
    overflow: hidden;
    background-color: var(--tk-about-forest);
    box-shadow: 0 20px 48px rgba(18, 61, 44, 0.16);
    display: grid;
    grid-template-columns: 58% 42%;
    position: relative;
}

.tk-about-mission-content {
    padding: 4.5rem 4rem 4.5rem 4.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: radial-gradient(circle at 10% 20%, #174834 0%, #123D2C 60%, #0F3325 100%);
    position: relative;
    z-index: 1;
}

.tk-about-mission-content .tk-about-heading-lg {
    color: #FFFFFF;
    margin-bottom: 2.5rem;
}

.tk-about-mission-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.tk-about-mission-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(229, 194, 120, 0.2);
    border-radius: 18px;
    padding: 1.75rem 1.5rem;
    transition: all 0.3s ease;
}

.tk-about-mission-item:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(229, 194, 120, 0.4);
    transform: translateY(-2px);
}

.tk-about-mission-icon {
    font-size: 1.65rem;
    color: var(--tk-about-gold-champagne);
    margin-bottom: 1rem;
    display: inline-block;
}

.tk-about-mission-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--tk-about-gold-champagne);
    margin-bottom: 0.65rem;
    font-family: var(--tk-about-font-body);
}

.tk-about-mission-text {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.82);
    margin: 0;
}

.tk-about-mission-media {
    position: relative;
    overflow: hidden;
    min-height: 480px;
    height: 100%;
}

.tk-about-mission-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.tk-about-mission-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(14, 38, 28, 0.92) 0%,
        rgba(14, 38, 28, 0.45) 45%,
        transparent 80%
    );
    display: flex;
    align-items: flex-end;
    padding: 3rem 2.5rem;
}

.tk-about-mission-quote {
    font-family: var(--tk-about-font-heading);
    font-style: italic;
    font-size: clamp(1.4rem, 2vw, 1.85rem);
    line-height: 1.35;
    color: #FFFFFF;
    border-bottom: 2px solid var(--tk-about-gold-champagne);
    padding-bottom: 1rem;
    max-width: 360px;
}

/* ==========================================================================
   05. GIÁ TRỊ CỐT LÕI (Core Values - Minimalist)
   ========================================================================== */
.tk-about-core-section {
    padding: 6.5rem 0 7rem;
    background-color: var(--tk-about-ivory);
    position: relative;
}

.tk-about-core-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2.25rem;
}

.tk-about-core-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
}

.tk-about-core-icon {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background-color: var(--tk-about-gold-bg);
    border: 1px solid rgba(194, 147, 46, 0.28);
    color: var(--tk-about-gold-muted);
    font-size: 1.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.tk-about-core-item:hover .tk-about-core-icon {
    background-color: #EFE1C8;
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(194, 147, 46, 0.18);
}

.tk-about-core-title {
    font-family: var(--tk-about-font-body);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--tk-about-text-dark);
    margin-bottom: 0.75rem;
}

.tk-about-core-desc {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--tk-about-text-muted);
    margin: 0;
    max-width: 260px;
}

/* ==========================================================================
   06. QUY TRÌNH ĐỒNG HÀNH (5-Step Timeline)
   ========================================================================== */
.tk-about-process-section {
    padding: 6.5rem 0 7.5rem;
    background-color: var(--tk-about-cream);
    position: relative;
}

.tk-about-process-timeline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-top: 3.5rem;
    position: relative;
}

.tk-about-process-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 0 0.75rem;
}

.tk-about-process-icon-box {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background-color: #F6EEE0;
    border: 1px solid rgba(194, 147, 46, 0.32);
    color: var(--tk-about-gold-muted);
    font-size: 1.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.35rem;
    position: relative;
    transition: all 0.3s ease;
}

.tk-about-process-step:hover .tk-about-process-icon-box {
    background-color: #EFE0C4;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(194, 147, 46, 0.2);
}

.tk-about-process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tk-about-gold);
    font-size: 1.25rem;
    margin-top: 1.4rem;
    opacity: 0.7;
    flex-shrink: 0;
}

.tk-about-process-title {
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.45;
    color: var(--tk-about-text-dark);
    margin: 0;
    max-width: 170px;
}

/* ==========================================================================
   07. CTA CUỐI TRANG (Banner CTA)
   ========================================================================== */
.tk-about-cta-section {
    padding: 2rem 0 6.5rem;
    background-color: var(--tk-about-cream);
}

.tk-about-cta-box {
    border-radius: 26px;
    overflow: hidden;
    background-color: var(--tk-about-forest);
    box-shadow: 0 20px 48px rgba(18, 61, 44, 0.15);
    display: grid;
    grid-template-columns: 55% 45%;
    position: relative;
}

.tk-about-cta-content {
    padding: 4rem 3.5rem 4rem 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: radial-gradient(circle at 10% 20%, #174834 0%, #123D2C 65%, #0F3325 100%);
    position: relative;
    z-index: 1;
}

/* Delicate gold decorative curve in CTA background */
.tk-about-cta-content::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -20px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 1px solid rgba(229, 194, 120, 0.12);
    pointer-events: none;
}

.tk-about-cta-content::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: 20px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 1px solid rgba(229, 194, 120, 0.08);
    pointer-events: none;
}

.tk-about-cta-content .tk-about-heading-md {
    color: #FFFFFF;
    margin-bottom: 1rem;
}

.tk-about-cta-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    max-width: 480px;
}

.tk-about-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: linear-gradient(135deg, #C2932E 0%, #A97E25 100%);
    color: #FFFFFF;
    padding: 0.875rem 2.25rem;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    align-self: flex-start;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tk-about-cta-btn:hover {
    color: #FFFFFF;
    background: linear-gradient(135deg, #D4A33B 0%, #B8882D 100%);
    box-shadow: 0 14px 32px rgba(194, 147, 46, 0.4);
    transform: translateY(-2px);
}

.tk-about-cta-btn i {
    transition: transform 0.25s ease;
}

.tk-about-cta-btn:hover i {
    transform: translateX(4px);
}

.tk-about-cta-media {
    position: relative;
    overflow: hidden;
    min-height: 360px;
    height: 100%;
}

.tk-about-cta-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* ==========================================================================
   RESPONSIVE DESIGN (1920px -> 390px)
   ========================================================================== */
@media (max-width: 1200px) {
    .tk-about-hero-content {
        padding: 3rem 2.5rem 3rem 2rem;
    }

    .tk-about-story-grid {
        gap: 3rem;
    }

    .tk-about-mission-box {
        grid-template-columns: 55% 45%;
    }

    .tk-about-mission-content {
        padding: 3.5rem 2.5rem;
    }

    .tk-about-cta-content {
        padding: 3.5rem 2.5rem;
    }
}

@media (max-width: 991.98px) {
    /* Hero */
    .tk-about-hero {
        min-height: 540px;
    }

    .tk-about-hero-overlay {
        background: linear-gradient(
            90deg, 
            rgba(252, 249, 242, 0.55) 0%, 
            rgba(252, 249, 242, 0.30) 55%, 
            rgba(252, 249, 242, 0.08) 100%
        );
    }

    .tk-about-hero-content {
        max-width: 100%;
        padding: 3.5rem 0;
    }

    /* Story */
    .tk-about-story-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .tk-about-story-media {
        max-width: 600px;
        margin: 0 auto;
    }

    /* Value Cards (2 columns on tablet) */
    .tk-about-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    /* Mission / Vision */
    .tk-about-mission-box {
        grid-template-columns: 1fr;
    }

    .tk-about-mission-content {
        padding: 3.5rem 2rem;
    }

    .tk-about-mission-media {
        min-height: 380px;
    }

    /* Core Values (2 columns on tablet) */
    .tk-about-core-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    /* Timeline */
    .tk-about-process-timeline {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 1rem;
    }

    .tk-about-process-arrow {
        display: none;
    }

    /* CTA */
    .tk-about-cta-box {
        grid-template-columns: 1fr;
    }

    .tk-about-cta-content {
        padding: 3.5rem 2rem;
    }

    .tk-about-cta-media {
        min-height: 280px;
    }
}

@media (max-width: 767.98px) {
    .tk-about-hero {
        min-height: 480px;
    }

    .tk-about-hero-overlay {
        background: linear-gradient(
            180deg, 
            rgba(252, 249, 242, 0.60) 0%, 
            rgba(252, 249, 242, 0.38) 60%, 
            rgba(252, 249, 242, 0.15) 100%
        );
    }

    .tk-about-hero-content {
        padding: 3rem 0;
    }

    .tk-about-story-section,
    .tk-about-values-section,
    .tk-about-core-section,
    .tk-about-process-section {
        padding: 4.5rem 0;
    }

    .tk-about-section-header {
        margin-bottom: 2.5rem;
    }

    /* Values to 1 col on mobile */
    .tk-about-cards-grid {
        grid-template-columns: 1fr;
        max-width: 440px;
        margin: 0 auto;
    }

    /* Mission items stack */
    .tk-about-mission-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Core values to 1 or 2 col on mobile */
    .tk-about-core-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Vertical Timeline on Mobile */
    .tk-about-process-timeline {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 1.75rem;
        max-width: 380px;
        margin: 2.5rem auto 0;
    }

    .tk-about-process-step {
        flex-direction: row;
        text-align: left;
        gap: 1.25rem;
        padding: 0;
    }

    .tk-about-process-icon-box {
        margin-bottom: 0;
        flex-shrink: 0;
        width: 60px;
        height: 60px;
        font-size: 1.45rem;
    }

    .tk-about-process-title {
        max-width: 100%;
        font-size: 1rem;
    }

    .tk-about-process-arrow {
        display: none;
    }
}