/* 
==========================================
RESPONSIVE BREAKPOINTS
==========================================
Mobile Extra Small: max-width: 350px
Mobile Small:       max-width: 480px
Mobile Large:       481px - 768px
Mobile (General):   max-width: 768px
Tablet:             769px - 991px
Desktop Small:      992px - 1399px
Desktop Medium:     1400px - 1699px (Sidebar visible, 2 cards per row)
Desktop Large:      1700px+ (Sidebar visible, 3+ cards per row)

SIDEBAR BEHAVIOR:
- Mobile (0-768px): Hidden by default, toggle to show
- Tablet (769px-991px): Hidden by default, toggle to show
- Desktop Small (992px-1399px): Hidden by default, toggle to show
- Desktop Medium (1400px-1699px): Always visible
- Desktop Large (1700px+): Always visible

FOOTERBAR BEHAVIOR:
- Mobile/Tablet/Desktop Small (0-1399px): Visible (when sidebar hidden)
- Desktop Medium/Large (1400px+): Hidden (sidebar always visible)
==========================================
*/

/* CSS Variables - Κεντρικά Χρώματα */
:root {
    --header-primary-color: #8f8f97ff; /* Κύριο χρώμα για όλα τα headers */
    --status-approved-color: #00f4bd; /* Approved status */
    --status-rejected-color: rgb(255, 0, 102); /* Rejected status */
    
    /* Basic Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-dark-grey: #333333;
    --color-medium-grey: #6c757d;
    --color-light-grey: #f3f4f6;
    --color-border: #e9ecef;
}


/* Mobile-first design για Android WebView */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--color-light-grey);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.mobile-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 20px 15px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.register-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    max-width: 600px;
    width: 90%;
    margin: 0 auto;
}

.register-header {
    text-align: center;
    margin-bottom: 30px;
}

.app-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--header-primary-color);
    margin-bottom: 10px;
}

.mobile-input {
    padding: 15px 20px;
    border: 2px solid var(--color-border);
    border-radius: 50px;
    font-size: 16px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    touch-action: manipulation;
}

.mobile-input:focus {
    border-color: var(--header-primary-color);
    box-shadow: 0 0 0 0.2rem rgba(143, 143, 151, 0.25);
}

.mobile-btn {
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 50px;
    border: none;
    background-color: var(--header-primary-color);
    color: var(--color-white);
    width: 100%;
    transition: all 0.3s ease;
    touch-action: manipulation;
}

.mobile-btn:hover, .mobile-btn:active {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(143, 143, 151, 0.4);
}

.back-link {
    text-align: center;
    margin-top: 20px;
}

.back-link a {
    color: var(--header-primary-color);
    text-decoration: none;
    font-weight: 500;
    margin: 0 10px;
}

.alert-mobile {
    border-radius: 15px;
    padding: 15px;
    margin-bottom: 20px;
    border: none;
}

.alert-danger {
    background: rgba(255, 0, 102, 0.1);
    color: var(--status-rejected-color);
}

.alert-success {
    background: rgba(0, 244, 189, 0.1);
    color: var(--color-dark-grey);
}

.language-selector {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-dropdown {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--color-border);
    border-radius: 15px;
    padding: 8px 12px;
    font-size: 0.9rem;
    color: var(--color-dark-grey);
    cursor: pointer;
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
}

.language-dropdown option:checked {
    background-color: var(--header-primary-color);
    color: var(--color-white);
}

.form-check {
    margin-bottom: 15px;
}

.form-check-input {
    width: 20px;
    height: 20px;
    margin-top: 0.3rem;
    cursor: pointer;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-white);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    position: relative;
    transition: all 0.2s ease;
}

.form-check-input:checked {
    background-color: var(--status-approved-color);
    border-color: var(--status-approved-color);
}

.form-check-input:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-white);
    font-size: 14px;
    font-weight: bold;
}

/* Phone input with country code */
.phone-input-group {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.country-code-select {
    flex: 1;
    padding: 15px 12px;
    border: 2px solid var(--color-border);
    border-radius: 50px;
    font-size: 14px;
    background-color: var(--color-white);
    cursor: pointer;
    transition: all 0.3s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    margin-bottom: 20px;
}

.country-code-select:focus {
    border-color: var(--header-primary-color);
    box-shadow: 0 0 0 0.2rem rgba(143, 143, 151, 0.25);
    outline: none;
}

.phone-number-input {
    flex: 1;
}

.terms-link {
    color: var(--header-primary-color);
    text-decoration: underline;
    cursor: pointer;
}

.terms-link:hover {
    color: var(--color-dark-grey);
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 9998;
}

.modal-backdrop.show {
    display: block;
}

.terms-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-white);
    border-radius: 20px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    z-index: 9999;
    display: none;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.terms-modal.show {
    display: block;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-border);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--header-primary-color);
}

.close-modal {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--color-medium-grey);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
}

.close-modal:hover {
    color: var(--status-rejected-color);
}

.modal-body {
    color: var(--color-dark-grey);
    line-height: 1.6;
}

.modal-body h3 {
    color: var(--header-primary-color);
    margin-top: 20px;
    margin-bottom: 10px;
}

.modal-body p {
    margin-bottom: 15px;
}

.password-requirements {
    font-size: 0.85rem;
    color: var(--color-medium-grey);
    margin-top: -15px;
    margin-bottom: 15px;
}

.input-invalid {
    border-color: var(--status-rejected-color) !important;
    background-color: var(--color-white) !important;
}

.input-valid {
    border-color: var(--status-approved-color) !important;
}

.input-valid {
    border-color: var(--status-approved-color) !important;
}

/* Slider Captcha Styles */
.captcha-container {
    background: var(--color-white);
    border-radius: 10px;
    padding: 15px;
    border: 2px solid var(--color-border);
}

.captcha-canvas-wrapper {
    position: relative;
    width: 300px;
    margin: 0 auto 15px;
}

#captchaCanvas {
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

#captchaPiece {
    position: absolute;
    left: 0;
    top: 45px;
    cursor: move;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    border-radius: 4px;
}

.captcha-slider-wrapper {
    position: relative;
    width: 300px;
    margin: 0 auto;
}

.captcha-slider-track {
    width: 100%;
    height: 40px;
    background: var(--color-light-grey);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--color-border);
}

.captcha-slider-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--status-approved-color) 0%, #00d4a0 100%);
    border-radius: 20px;
    transition: width 0.1s ease;
}

.captcha-slider-button {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: var(--color-white);
    border: 3px solid var(--header-primary-color);
    border-radius: 50%;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--header-primary-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    transition: all 0.2s ease;
    -webkit-user-select: none;
    user-select: none;
}

.captcha-slider-button:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.captcha-slider-button:active {
    cursor: grabbing;
    transform: translateY(-50%) scale(0.98);
}

.captcha-slider-button.success {
    background: var(--status-approved-color);
    border-color: var(--status-approved-color);
    color: var(--color-white);
}

.captcha-slider-button.error {
    background: var(--status-rejected-color);
    border-color: var(--status-rejected-color);
    color: var(--color-white);
}

.captcha-message {
    text-align: center;
    margin-top: 10px;
    font-size: 0.9rem;
    min-height: 20px;
}

.captcha-message.success {
    color: var(--status-approved-color);
    font-weight: 600;
}

.captcha-message.error {
    color: var(--status-rejected-color);
    font-weight: 600;
}

@media (max-width: 768px) {
    .register-card {
        padding: 30px 20px;
        margin: 10px;
    }
    .app-title {
        font-size: 1.5rem;
    }
    .language-selector {
        top: 15px;
        right: 15px;
    }
}