/* ==========================================================================
   DoctorMVP Homepage Redesign (v12.3.1) - 2026-02-22
   Core Design System: Modern Blue & Orange, Glassmorphism, Micro-interactions
   ========================================================================== */

/* Typography & Base Variables */
:root {
    --drmvp-primary: #0F4C81;
    /* Classic Blue */
    --drmvp-primary-light: #2A6B9E;
    --drmvp-secondary: #FF8F00;
    /* Warm Orange */
    --drmvp-text: #333333;
    --drmvp-bg-light: #F4F7F9;
    --drmvp-white: #FFFFFF;
    --shadow-soft: 0 10px 30px rgba(15, 76, 129, 0.08);
    --shadow-hover: 0 15px 40px rgba(15, 76, 129, 0.15);
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base Body Adjustments (Only for DrMVP homepage context if applied globally) */
body {
    background-color: var(--drmvp-bg-light);
    color: var(--drmvp-text);
}

/* ==========================================================================
   Section: Global Utilities & Overrides
   ========================================================================== */

/* Title Enhancements */
h1.title,
h1.header {
    font-weight: 700;
    color: var(--drmvp-primary);
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 25px;
}

h1.title::after,
h1.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--drmvp-primary) 0%, var(--drmvp-secondary) 100%);
    border-radius: 2px;
}

/* Buttons Enhancement */
.btn-primary {
    background: linear-gradient(135deg, var(--drmvp-primary) 0%, var(--drmvp-primary-light) 100%);
    border: none;
    border-radius: 50px;
    padding: 10px 30px;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(15, 76, 129, 0.2);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--drmvp-primary-light) 0%, var(--drmvp-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.3);
}

/* General Card Design (Glassmorphism influence) */
.card {
    background: var(--drmvp-white);
    border: none !important;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    margin-bottom: 20px;
}

.card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.card-title {
    color: var(--drmvp-primary);
    font-weight: 700;
    margin-top: 15px;
}

/* ==========================================================================
   Section: Features (學習特色)
   ========================================================================== */
.features {
    background-color: var(--drmvp-white);
    position: relative;
    padding: 60px 0;
}

.features .col-md-4 {
    padding: 15px;
}

.features .card {
    height: 100%;
    padding: 20px 10px;
}

.features img {
    margin-bottom: -30px;
    /* Pull image into card */
    position: relative;
    z-index: 10;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.1));
    transition: var(--transition-smooth);
}

.features .col-md-4:hover img {
    transform: scale(1.05) translateY(-10px);
}

/* ==========================================================================
   Section: Introduction (課程介紹 - Flip Cards)
   ========================================================================== */
.introduction {
    background: linear-gradient(180deg, var(--drmvp-bg-light) 0%, var(--drmvp-white) 100%);
    padding: 60px 0;
}

.row-introduction {
    margin-bottom: 40px;
    align-items: center;
    /* Center vertically */
}

.row-introduction img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.row-introduction:hover img {
    box-shadow: var(--shadow-hover);
}

/* Flip Card Modernization */
.flip-card {
    background-color: transparent;
    perspective: 1000px;
    height: 100%;
    min-height: 550px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d;
}

.flip-card.rotate .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--border-radius-lg);
    background: var(--drmvp-white);
    box-shadow: var(--shadow-soft);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.flip-card-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, var(--drmvp-primary) 0%, var(--drmvp-primary-light) 100%) !important;
    color: var(--drmvp-white);
}

.flip-card-back .card-title {
    color: var(--drmvp-white);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 10px;
}

.flip-card-back .btn-introduction-back {
    color: var(--drmvp-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
}

.btn-introduction-front {
    background: var(--drmvp-white);
    color: var(--drmvp-primary);
    border: 2px solid var(--drmvp-primary);
}

.btn-introduction-front:hover {
    background: var(--drmvp-primary);
    color: var(--drmvp-white);
}

.text-left {
    color: #555;
    line-height: 1.6;
}

.flip-card-back .text-left,
.flip-card-back div {
    color: rgba(255, 255, 255, 0.9);
}


/* ==========================================================================
   Section: Consultants (我們把世界各地的老師帶到你面前)
   ========================================================================== */
.consultants {
    background-color: var(--drmvp-white);
    padding: 80px 0;
}

.btn-consultants {
    background: var(--drmvp-secondary);
    color: white;
    border-radius: 50px;
    padding: 12px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(255, 143, 0, 0.3);
    transition: var(--transition-smooth);
}

.btn-consultants:hover {
    background: #E68100;
    color: white;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(255, 143, 0, 0.4);
}

/* 防止我要體驗按鈕被其他樣式覆蓋寬度 */
.flip-card-back .toExperience {
    width: auto !important;
    min-width: 140px !important;
    white-space: nowrap !important;
    border-radius: 50px !important;
}

/* ==========================================================================
   Section: Recommendation (用戶推薦)
   ========================================================================== */
.recommendation {
    background: var(--drmvp-bg-light);
    padding: 60px 0;
}

.card-recommendation {
    padding: 0 !important;
    overflow: hidden;
}

.card-recommendation .pictureHolder {
    position: relative;
}

.card-recommendation img {
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    border: none;
    transition: transform 0.5s ease;
}

.card-recommendation:hover img {
    transform: scale(1.05);
}

.userProfessional {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(15, 76, 129, 0.85) !important;
    /* Semi-transparent primary */
    color: white !important;
    font-weight: bold;
    backdrop-filter: blur(4px);
}

.btn-recommendation-detail {
    text-decoration: none;
    color: inherit;
}

.card-recommendation .card-body {
    padding: 20px;
}

.card-recommendation .DisplayName {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--drmvp-primary);
}

.card-recommendation .Summary {
    margin-top: 10px;
    font-style: italic;
    color: #666;
}

.card-recommendation .fa-chevron-circle-right {
    color: var(--drmvp-secondary);
    font-size: 1.5rem;
    position: absolute;
    bottom: 20px;
    right: 20px;
    transition: transform 0.3s ease;
}

.card-recommendation:hover .fa-chevron-circle-right {
    transform: translateX(5px);
}

.btn-recommendation-more {
    border: 2px solid var(--drmvp-primary);
    color: var(--drmvp-primary);
    padding: 10px 30px;
    font-weight: bold;
    transition: var(--transition-smooth);
}

.btn-recommendation-more:hover {
    background: var(--drmvp-primary);
    color: white;
}

/* ==========================================================================
   Section: Collection (精選影音)
   ========================================================================== */
.collection {
    background: var(--drmvp-white);
    padding: 60px 0;
}

.card-video {
    padding: 10px;
    border-radius: var(--border-radius-md);
}

.card-video img {
    border-radius: 8px;
    border: none;
}

.card-video .card-header {
    background: transparent;
    border-bottom: none;
    padding: 10px 0;
    display: flex;
    gap: 10px;
}

.badge-grade {
    background-color: var(--drmvp-primary);
    color: white;
    border-radius: 4px;
}

.badge-category {
    background-color: var(--drmvp-secondary);
    color: white;
    border-radius: 4px;
}

.card-video .card-body {
    padding: 0 0 10px 0;
    font-weight: bold;
    color: #333;
}

.card-video .card-footer {
    background: transparent;
    border-top: 1px solid #eee;
    padding: 10px 0 0 0;
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */
@media (max-width: 768px) {

    .features,
    .introduction,
    .consultants,
    .recommendation,
    .collection {
        padding: 40px 0;
    }

    .flip-card {
        height: auto;
        min-height: 400px;
    }
}