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

:root {
    --pink-primary: #ff69b4;
    --pink-light: #ffb6d9;
    --pink-lighter: #ffe4f1;
    --pink-dark: #d64894;
    --pink-darker: #b83280;
    --bg-gradient: linear-gradient(135deg, #ffd1dc 0%, #ffb3d1 50%, #ff9ec7 100%);
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-700: #495057;
    --gray-900: #212529;
    --shadow: 0 4px 20px rgba(255, 105, 180, 0.15);
    --shadow-lg: 0 10px 40px rgba(255, 105, 180, 0.25);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    color: var(--gray-900);
    -webkit-font-smoothing: antialiased;
}

/* ========== LOGIN PAGE ========== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 30px;
    padding: 40px 30px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    font-size: 64px;
    margin-bottom: 15px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo-container h1 {
    color: var(--pink-primary);
    font-size: 24px;
    margin-bottom: 5px;
}

.tagline {
    color: var(--gray-700);
    font-size: 14px;
}

.login-form {
    margin-top: 30px;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
}

.login-footer p {
    font-size: 12px;
    color: var(--gray-700);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--pink-primary), var(--pink-dark));
    color: var(--white);
    border: none;
    border-radius: 15px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 105, 180, 0.4);
}

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

/* ========== MAIN APP ========== */
.main-app {
    min-height: 100vh;
    padding-bottom: 20px;
}

.app-header {
    background: linear-gradient(135deg, var(--pink-primary), var(--pink-dark));
    color: var(--white);
    padding: 15px 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

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

.logo-small {
    font-size: 28px;
}

.app-header h1 {
    font-size: 20px;
    font-weight: 700;
}

.btn-nav {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 15px;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-nav.active {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-nav:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-nav:active {
    transform: scale(0.95);
}

.btn-logout {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-logout span:first-child {
    /* Text "Έξοδος" */
}

.btn-logout .icon {
    /* Door emoji */
    flex-shrink: 0;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-logout:active {
    transform: scale(0.95);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.page-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ========== AUTOCOMPLETE ========== */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 2px solid var(--pink-light);
    border-top: none;
    border-radius: 0 0 15px 15px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.2);
}

.autocomplete-results.show {
    display: block;
}

.autocomplete-item {
    padding: 12px 15px;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 1px solid var(--pink-lighter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover {
    background: var(--pink-lighter);
}

.autocomplete-item-name {
    font-weight: 600;
    color: var(--gray-900);
}

.autocomplete-item-phone {
    font-size: 12px;
    color: var(--gray-700);
}

.autocomplete-new {
    background: var(--pink-lighter);
    color: var(--pink-darker);
    font-weight: 600;
}

/* ========== CLIENT ITEMS ========== */
.client-item {
    background: var(--pink-lighter);
    border-left: 4px solid var(--pink-primary);
    padding: 15px;
    margin-bottom: 12px;
    border-radius: 15px;
    transition: all 0.3s;
}

.client-item:active {
    transform: scale(0.98);
}

.client-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 10px;
}

.client-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--pink-darker);
}

.client-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.client-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ========== QUICK ACTIONS ========== */
.quick-actions {
    margin-bottom: 20px;
}

.btn-block {
    width: 100%;
}

/* ========== CARDS ========== */
.card {
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card h2 {
    color: var(--pink-primary);
    font-size: 20px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ========== FILTERS ========== */
.filter-card h2 {
    margin-bottom: 20px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 15px;
}

.btn-filter {
    padding: 12px;
    background: var(--pink-lighter);
    border: 2px solid var(--pink-light);
    color: var(--pink-darker);
    border-radius: 15px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-filter:hover {
    background: var(--pink-light);
    transform: scale(1.05);
}

.btn-filter:active {
    transform: scale(0.95);
}

.date-filters {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.date-input {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--pink-light);
    border-radius: 15px;
    font-size: 14px;
}

/* ========== FORM ELEMENTS ========== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 14px;
}

.icon {
    font-size: 18px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--pink-lighter);
    border-radius: 15px;
    font-size: 15px;
    transition: all 0.3s;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--pink-primary);
    box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* ========== BUTTONS ========== */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 15px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--pink-primary), var(--pink-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 105, 180, 0.4);
}

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

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

.btn-secondary:active {
    transform: scale(0.95);
}

.btn-success {
    background: #28a745;
    color: var(--white);
    padding: 8px 15px;
    font-size: 13px;
}

.btn-success:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
    color: var(--white);
    padding: 8px 15px;
    font-size: 13px;
}

.btn-danger:hover {
    background: #c82333;
}

/* ========== APPOINTMENTS LIST ========== */
.appointments-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.count-badge {
    background: linear-gradient(135deg, var(--pink-primary), var(--pink-dark));
    color: var(--white);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
}

.appointments-list {
    max-height: 600px;
    overflow-y: auto;
}

.date-group-header {
    background: var(--pink-lighter);
    padding: 12px 15px;
    border-radius: 15px;
    margin: 20px 0 15px 0;
    color: var(--pink-darker);
    font-weight: 700;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.appointment-item {
    background: var(--pink-lighter);
    border-left: 4px solid var(--pink-primary);
    padding: 15px;
    margin-bottom: 12px;
    border-radius: 15px;
    transition: all 0.3s;
}

.appointment-item:active {
    transform: scale(0.98);
}

.appointment-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 10px;
}

.appointment-time {
    font-size: 18px;
    font-weight: 700;
    color: var(--pink-darker);
}

.appointment-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.appointment-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.detail-label {
    font-size: 12px;
    color: var(--gray-700);
    font-weight: 600;
}

.detail-value {
    font-size: 14px;
    color: var(--gray-900);
    font-weight: 500;
}

.loading, .no-appointments {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-700);
}

/* ========== MODAL ========== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
    overflow-y: auto;
}

.modal-content {
    background: var(--white);
    margin: 20px auto;
    padding: 0;
    border-radius: 25px;
    width: calc(100% - 40px);
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-header {
    background: linear-gradient(135deg, var(--pink-primary), var(--pink-dark));
    color: var(--white);
    padding: 20px;
    border-radius: 25px 25px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: var(--white);
    font-size: 20px;
    margin: 0;
}

.close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    font-size: 24px;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.close-btn:active {
    transform: rotate(90deg) scale(0.9);
}

.modal-content form {
    padding: 20px;
}

.modal-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 20px;
}

/* ========== MESSAGES ========== */
.message {
    padding: 15px;
    border-radius: 15px;
    margin: 20px;
    animation: slideDown 0.3s;
    font-weight: 500;
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.message-success {
    background-color: #d4edda;
    color: #155724;
    border: 2px solid #c3e6cb;
}

.message-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 2px solid #f5c6cb;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .card {
        padding: 15px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .appointment-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .appointment-actions {
        width: 100%;
        margin-top: 10px;
    }

    .appointment-actions .btn {
        flex: 1;
    }

    .modal-actions {
        grid-template-columns: 1fr;
    }

    .app-header h1 {
        font-size: 16px;
    }

    .logo-small {
        font-size: 24px;
    }
    
    /* Mobile header fixes */
    .app-header {
        padding: 12px 15px;
    }
    
    .header-content {
        gap: 8px;
    }
    
    .header-left {
        gap: 8px;
        flex: 1;
        min-width: 0; /* Allow text truncation */
    }
    
    .header-right {
        gap: 6px;
        flex-shrink: 0; /* Prevent shrinking */
    }
    
    /* Compact nav buttons on mobile */
    .btn-nav {
        padding: 6px 10px;
        font-size: 18px;
        border-radius: 12px;
    }
    
    /* Compact logout button on mobile */
    .btn-logout {
        padding: 6px 10px;
        font-size: 12px;
        border-radius: 15px;
        gap: 4px;
        white-space: nowrap;
    }
    
    .btn-logout span:first-child {
        display: none; /* Hide "Έξοδος" text on very small screens */
    }
    
    .btn-logout .icon {
        font-size: 16px;
    }
    
    /* Autocomplete dropdown fixes */
    .autocomplete-results {
        max-height: 250px; /* Taller on mobile for better scrolling */
        font-size: 14px;
        border-radius: 0 0 12px 12px;
    }
    
    .autocomplete-item {
        padding: 10px 12px;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .autocomplete-item-name {
        font-size: 14px;
    }
    
    .autocomplete-item-phone {
        font-size: 12px;
        color: var(--gray-700);
    }
    
    /* Modal fixes for mobile */
    .modal-content {
        margin: 20px;
        max-width: calc(100% - 40px);
        max-height: calc(100vh - 40px);
        overflow-y: auto;
    }
}

/* Extra small screens - hide logout text */
@media (max-width: 380px) {
    .app-header h1 {
        font-size: 14px;
    }
    
    .header-right {
        gap: 4px;
    }
    
    .btn-nav {
        padding: 5px 8px;
        font-size: 16px;
    }
    
    .btn-logout {
        padding: 5px 8px;
        min-width: auto;
    }
    
    /* Extra compact autocomplete */
    .autocomplete-item {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .autocomplete-item-name {
        font-size: 13px;
    }
    
    .autocomplete-item-phone {
        font-size: 11px;
    }
}

@media (min-width: 769px) {
    .filter-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .date-filters {
        max-width: 500px;
    }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== SCROLLBAR ========== */
.appointments-list::-webkit-scrollbar {
    width: 8px;
}

.appointments-list::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 10px;
}

.appointments-list::-webkit-scrollbar-thumb {
    background: var(--pink-light);
    border-radius: 10px;
}

.appointments-list::-webkit-scrollbar-thumb:hover {
    background: var(--pink-primary);
}