/*
================================================================================
EILBRIEF INTERNATIONAL - SERVICE BOXES FLIP CARDS CSS
================================================================================
Version: 1.0
Stand: Januar 2026

Farbschema: 
- Primary: #0B3D91 (Blau)
- Accent: #FF6B2C (Orange)
- Gradient: Blau → Orange

Basierend auf expressversand-usa.de Flip-Card Technik
================================================================================
*/

/* ═══════════════════════════════════════════════════════════════════════════
   CSS VARIABLEN
   ═══════════════════════════════════════════════════════════════════════════ */
.service-boxes-section {
    /* Hauptfarben */
    --flip-primary: #0B3D91;
    --flip-primary-dark: #071E3D;
    --flip-secondary: #FF6B2C;
    --flip-secondary-dark: #E85A1E;
    
    /* Neutrale Farben */
    --flip-white: #ffffff;
    --flip-text: #1a1a1a;
    --flip-text-muted: #6c757d;
    --flip-text-light: rgba(255, 255, 255, 0.9);
    --flip-text-lighter: rgba(255, 255, 255, 0.6);
    
    /* Erfolgsfarbe */
    --flip-success: #10B981;
    
    /* Schatten */
    --flip-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
    --flip-shadow-hover: 0 15px 50px rgba(11, 61, 145, 0.25);
    
    /* Abmessungen */
    --flip-width: 340px;
    --flip-height: 340px;  /* Erhöht für Service-Dropdown + Abmessungen */
    --flip-radius: 20px;
    --flip-gap: 24px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   SECTION CONTAINER
   ═══════════════════════════════════════════════════════════════════════════ */
.service-boxes-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
}

.service-boxes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--flip-gap);
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FLIP-CARD BASE
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box.flip-card {
    width: var(--flip-width);
    height: var(--flip-height);
    perspective: 1200px;
    cursor: pointer;
}

.service-box .card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

/* Hover-Flip nur für Nicht-Touch-Geräte */
@media (hover: hover) and (pointer: fine) {
    .service-box.flip-card:hover .card-inner {
        transform: rotateX(-180deg);
    }
}

/* Flip via JavaScript-Klasse (für Touch und Focus) */
.service-box .card-inner.flipped {
    transform: rotateX(-180deg);
}

.service-box .card-front,
.service-box .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--flip-radius);
    overflow: hidden;
}

/* ═══════════════════════════════════════════════════════════════════════════
   FRONT SIDE
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box .card-front {
    background: var(--flip-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--flip-shadow);
    border: 1px solid rgba(11, 61, 145, 0.1);
}

/* Icon Container */
.service-box .card-front .box-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(11, 61, 145, 0.08) 0%, rgba(255, 107, 44, 0.08) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
    transition: all 0.3s ease;
}

.service-box .card-front .box-icon::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 22px;
    border: 2px dashed var(--flip-primary);
    opacity: 0.3;
    animation: icon-spin 20s linear infinite;
}

@keyframes icon-spin {
    100% { transform: rotate(360deg); }
}

.service-box .card-front .box-icon i {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--flip-primary) 0%, var(--flip-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-box.flip-card:hover .card-front .box-icon {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(11, 61, 145, 0.12) 0%, rgba(255, 107, 44, 0.12) 100%);
}

/* Title */
.service-box .card-front .box-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--flip-text);
    margin: 0 0 8px 0;
}

/* Subtitle */
.service-box .card-front .box-subtitle {
    font-size: 0.95rem;
    color: var(--flip-text-muted);
    margin: 0 0 16px 0;
}

/* CTA Link */
.service-box .card-front .box-link {
    font-size: 0.95rem;
    color: var(--flip-secondary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-box .card-front .box-link i {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

.service-box.flip-card:hover .card-front .box-link i {
    transform: translateX(4px);
}

/* Animated Border */
.service-box .card-front .box-border {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--flip-primary), 
        var(--flip-secondary), 
        var(--flip-primary)
    );
    background-size: 200% 100%;
    animation: gradient-move 3s ease infinite;
}

@keyframes gradient-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   BACK SIDE
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box .card-back {
    background: linear-gradient(135deg, 
        var(--flip-primary) 0%, 
        var(--flip-primary-dark) 40%, 
        #2d1a45 70%, 
        var(--flip-secondary-dark) 100%
    );
    transform: rotateX(180deg);
    box-shadow: var(--flip-shadow-hover);
    display: flex;
    flex-direction: column;
}

/* Header */
.service-box .card-back-header {
    background: rgba(0, 0, 0, 0.2);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.service-box .card-back-header .header-title {
    color: var(--flip-white);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-box .card-back-header .header-title i {
    color: rgba(255, 255, 255, 0.7);
}

.service-box .card-back-header .header-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--flip-white);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* Content */
.service-box .card-back-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BOX 1: ONLINE VERSENDEN
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box .btn-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--flip-primary);
    text-decoration: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.service-box .btn-cta:hover {
    background: var(--flip-white);
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

.service-box .btn-cta i {
    color: var(--flip-secondary);
}

/* Features */
.service-box .cta-features {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--flip-text-light);
}

.service-box .cta-features span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.service-box .cta-features i {
    color: var(--flip-success);
}

/* ═══════════════════════════════════════════════════════════════════════════
   BOX 2: SENDUNG VERFOLGEN
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box .input-with-btn {
    display: flex;
    gap: 0;
}

.service-box .input-with-btn input {
    flex: 1;
    padding: 14px 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-right: none;
    border-radius: 12px 0 0 12px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--flip-white);
    transition: all 0.2s ease;
}

.service-box .input-with-btn input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.service-box .input-with-btn input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.15);
}

.service-box .input-with-btn button {
    padding: 14px 20px;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 0 12px 12px 0;
    cursor: pointer;
    transition: all 0.2s ease;
}

.service-box .input-with-btn button:hover {
    background: var(--flip-white);
}

.service-box .input-with-btn button i {
    color: var(--flip-secondary);
    font-size: 1.1rem;
}

/* Provider Hint */
.service-box .provider-hint {
    font-size: 0.8rem;
    color: var(--flip-text-lighter);
    text-align: center;
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BOX 3: TARIFRECHNER
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box.tarif .card-back-content {
    padding: 12px 16px 16px;
    gap: 8px;
}

/* Input Rows */
.service-box.tarif .input-row {
    width: 100%;
}

.service-box.tarif .input-row.region-row {
    overflow: hidden;
    transition: all 0.3s ease;
    max-height: 0;
    opacity: 0;
    margin: 0;
}

.service-box.tarif .input-row.region-row.visible {
    max-height: 80px;
    opacity: 1;
    margin-bottom: 8px;
}

/* Dimensions Row (L×B×H) */
.service-box.tarif .input-row.dimensions-row {
    display: flex;
    gap: 6px;
}

.service-box.tarif .input-group {
    position: relative;
    width: 100%;
}

.service-box.tarif .input-group.full {
    width: 100%;
}

.service-box.tarif .input-group.third {
    flex: 1;
}

/* Floating Labels */
.service-box.tarif .input-group label {
    position: absolute;
    top: -7px;
    left: 10px;
    font-size: 0.55rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, 
        var(--flip-primary-dark) 0%, 
        #2d1a45 100%
    );
    padding: 2px 6px;
    border-radius: 4px;
    z-index: 1;
}

/* Select & Input */
.service-box.tarif select,
.service-box.tarif input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.08);
    color: var(--flip-white);
    transition: all 0.2s ease;
    cursor: pointer;
}

/* Dimensions Inputs - kompakter */
.service-box.tarif .dimensions-row input[type="number"] {
    padding: 10px 8px;
    text-align: center;
    font-size: 0.8rem;
}

.service-box.tarif select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='white' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.service-box.tarif select option {
    background: var(--flip-primary-dark);
    color: var(--flip-white);
}

.service-box.tarif input[type="number"]::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.service-box.tarif select:focus,
.service-box.tarif input[type="number"]:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.12);
}

/* Input Suffix (kg) */
.service-box.tarif .input-suffix {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    pointer-events: none;
}

.service-box.tarif .input-suffix-small {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
}

.service-box.tarif .input-group.full input[type="number"] {
    padding-right: 40px;
}

/* Calculate Button */
.service-box.tarif .btn-calculate {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(255, 255, 255, 0.85) 100%
    );
    color: var(--flip-primary);
    border: none;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 4px;
}

.service-box.tarif .btn-calculate:hover {
    background: var(--flip-white);
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3);
}

.service-box.tarif .btn-calculate i {
    color: var(--flip-secondary);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
    .service-boxes-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        padding: 0 16px;
    }
    
    .service-boxes-section {
        --flip-width: 100%;
    }
    
    .service-box.flip-card {
        width: 100%;
    }
}

@media (max-width: 900px) {
    .service-boxes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Tarifrechner volle Breite auf Tablet */
    .service-boxes-grid .service-box.tarif {
        grid-column: 1 / -1;
        max-width: 400px;
        justify-self: center;
    }
}

@media (max-width: 600px) {
    .service-boxes-section {
        padding: 40px 0;
        --flip-height: 280px;
    }
    
    .service-boxes-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-boxes-grid .service-box.tarif {
        max-width: 100%;
    }
}

@media (max-width: 380px) {
    .service-boxes-section {
        --flip-height: 290px;
    }
    
    .service-box .card-front .box-icon {
        width: 70px;
        height: 70px;
    }
    
    .service-box .card-front .box-icon i {
        font-size: 1.7rem;
    }
    
    .service-box .card-front .box-title {
        font-size: 1.15rem;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   TOUCH SUPPORT
   ═══════════════════════════════════════════════════════════════════════════ */
@media (hover: none) {
    .service-box.flip-card {
        cursor: pointer;
    }
    
    /* Tap-Hinweis für Mobile */
    .service-box .card-front .box-link::after {
        content: ' ↻';
        opacity: 0.6;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ERROR STATE (für Validierung)
   ═══════════════════════════════════════════════════════════════════════════ */
.service-box.tarif select.error,
.service-box.tarif input.error {
    border-color: #EF4444 !important;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}